DBZ-2948 Implement BLOB/CLOB support for Oracle LogMiner

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/BlobChunkList.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright Debezium Authors.
+ *
+ * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
+ */
+package io.debezium.connector.oracle;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A "marker" class for passing a collection of Blob data type chunks to {@link OracleValueConverters}
+ * so that each chunk can be converted, decoded, and combined into a single binary representation
+ * for event emission.
+ *
+ * @author Chris Cranford
+ */
+public class BlobChunkList extends ArrayList<String> {
+    /**
+     * Creates a BLOB chunk list backed by the provided collection.
+     *
+     * @param backingList collection of BLOB chunks
+     */
+    public BlobChunkList(List<String> backingList) {
+        super(backingList);
+    }
+}

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/OracleConnection.java

@@ -5,7 +5,6 @@
  */
 package io.debezium.connector.oracle;
 
-import java.sql.Connection;
 import java.sql.DatabaseMetaData;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
@@ -340,23 +339,31 @@ public Scn getCurrentScn() throws SQLException {
         });
     }
 
-    public OracleConnection executeLegacy(String... sqlStatements) throws SQLException {
-        return executeLegacy(statement -> {
-            for (String sqlStatement : sqlStatements) {
-                if (sqlStatement != null) {
-                    statement.execute(sqlStatement);
-                }
-            }
-        });
-    }
-
-    public OracleConnection executeLegacy(Operations operations) throws SQLException {
-        Connection conn = connection();
-        try (Statement statement = conn.createStatement()) {
-            operations.apply(statement);
-            commit();
+    /**
+     * Get a byte-array value from a given {@code HEXTORAW} argument.
+     *
+     * The provided {@code hexToRawValue} may be provided as the direct hex-string argument or the entire
+     * value may be wrapped with the {@code HEXTORAW} function call, which will be omitted.
+     *
+     * @param hexToRawValue the hex-to-raw string, never {@code null}
+     * @return byte array of decoded value, may be {@code null}
+     * @throws SQLException if there is a database exception
+     */
+    public byte[] getHexToRawByteArray(String hexToRawValue) throws SQLException {
+        final String data;
+        if (hexToRawValue.startsWith("HEXTORAW('") && hexToRawValue.endsWith("')")) {
+            data = hexToRawValue.substring(10, hexToRawValue.length() - 2);
         }
-        return this;
+        else {
+            data = hexToRawValue;
+        }
+
+        return prepareQueryAndMap("select HEXTORAW(?) FROM DUAL", ps -> ps.setString(1, data), rs -> {
+            if (rs.next()) {
+                return rs.getBytes(1);
+            }
+            return null;
+        });
     }
 
     public static String connectionString(Configuration config) {

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/OracleValueConverters.java

@@ -8,6 +8,8 @@
 import static io.debezium.util.NumberConversions.BYTE_FALSE;
 
 import java.math.BigDecimal;
+import java.nio.Buffer;
+import java.nio.ByteBuffer;
 import java.sql.Blob;
 import java.sql.Clob;
 import java.sql.SQLException;
@@ -20,6 +22,8 @@
 import java.time.format.DateTimeFormatter;
 import java.time.format.DateTimeFormatterBuilder;
 import java.time.temporal.ChronoField;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -254,7 +258,10 @@ protected Object convertString(Column column, Field fieldDefn, Object data) {
         }
         if (data instanceof String) {
             String s = (String) data;
-            if (s.startsWith("UNISTR('") && s.endsWith("')")) {
+            if (s.equals("EMPTY_CLOB()")) {
+                return null;
+            }
+            else if (s.startsWith("UNISTR('") && s.endsWith("')")) {
                 return convertOracleUnistr(column, fieldDefn, s.substring(8, s.length() - 2));
             }
         }
@@ -290,16 +297,49 @@ private String convertOracleUnistr(Column column, Field fieldDefn, String data)
 
     @Override
     protected Object convertBinary(Column column, Field fieldDefn, Object data, BinaryHandlingMode mode) {
-        if (data instanceof Blob) {
-            try {
+        try {
+            if (data instanceof String) {
+                String str = (String) data;
+                if (str.equals("EMPTY_BLOB()")) {
+                    return null;
+                }
+                else if (str.startsWith("HEXTORAW('") && str.endsWith("')")) {
+                    data = connection.getHexToRawByteArray(str);
+                }
+            }
+            else if (data instanceof BlobChunkList) {
+                data = convertBlobChunkList((BlobChunkList) data);
+            }
+            else if (data instanceof Blob) {
                 Blob blob = (Blob) data;
-                return blob.getBytes(0, Long.valueOf(blob.length()).intValue());
-            }
-            catch (SQLException e) {
-                throw new DebeziumException("Couldn't convert value for column " + column.name(), e);
+                data = blob.getBytes(1, Long.valueOf(blob.length()).intValue());
             }
+
+            return super.convertBinary(column, fieldDefn, data, mode);
         }
-        return super.convertBinary(column, fieldDefn, data, mode);
+        catch (SQLException e) {
+            throw new DebeziumException("Couldn't convert value for column " + column.name(), e);
+        }
+    }
+
+    private byte[] convertBlobChunkList(BlobChunkList chunks) throws SQLException {
+        if (chunks.isEmpty()) {
+            // if there are no chunks, simply return null
+            return null;
+        }
+
+        // Iterate each chunk's hex-string and generate a ByteBuffer for each chunk
+        // Oracle internal string limits enforce doing the chunk processing one-at-a-time.
+        List<ByteBuffer> buffers = new ArrayList<>(chunks.size());
+        for (String chunk : chunks) {
+            buffers.add(ByteBuffer.wrap(connection.getHexToRawByteArray(chunk)));
+        }
+
+        // Combine ByteBuffer instances into a single ByteBuffer
+        ByteBuffer buffer = ByteBuffer.allocate(buffers.stream().mapToInt(Buffer::remaining).sum());
+        buffers.forEach(b -> buffer.put(b.duplicate()));
+
+        return buffer.array();
     }
 
     @Override

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/LogMinerAdapter.java

@@ -71,7 +71,6 @@ public StreamingChangeEventSource getSource(OffsetContext offsetContext,
                 errorHandler,
                 clock,
                 schema,
-                taskContext,
                 jdbcConfig,
                 streamingMetrics);
     }

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/LogMinerChangeRecordEmitter.java

@@ -8,6 +8,7 @@
 import java.util.Arrays;
 import java.util.List;
 
+import io.debezium.DebeziumException;
 import io.debezium.connector.oracle.BaseChangeRecordEmitter;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValue;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
@@ -21,7 +22,7 @@
  */
 public class LogMinerChangeRecordEmitter extends BaseChangeRecordEmitter<LogMinerColumnValue> {
 
-    private LogMinerDmlEntry dmlEntry;
+    private final LogMinerDmlEntry dmlEntry;
     protected final Table table;
 
     public LogMinerChangeRecordEmitter(OffsetContext offset, LogMinerDmlEntry dmlEntry, Table table, Clock clock) {
@@ -32,7 +33,17 @@ public LogMinerChangeRecordEmitter(OffsetContext offset, LogMinerDmlEntry dmlEnt
 
     @Override
     protected Operation getOperation() {
-        return dmlEntry.getCommandType();
+        switch (dmlEntry.getOperation()) {
+            case RowMapper.INSERT:
+                return Operation.CREATE;
+            case RowMapper.UPDATE:
+            case RowMapper.SELECT_LOB_LOCATOR:
+                return Operation.UPDATE;
+            case RowMapper.DELETE:
+                return Operation.DELETE;
+            default:
+                throw new DebeziumException("Unsupported operation type: " + dmlEntry.getOperation());
+        }
     }
 
     @Override

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/LogMinerQueryResultProcessor.java

@@ -27,14 +27,13 @@
 import io.debezium.connector.oracle.logminer.parser.DmlParser;
 import io.debezium.connector.oracle.logminer.parser.DmlParserException;
 import io.debezium.connector.oracle.logminer.parser.LogMinerDmlParser;
+import io.debezium.connector.oracle.logminer.parser.SelectLobParser;
 import io.debezium.connector.oracle.logminer.parser.SimpleDmlParser;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
-import io.debezium.data.Envelope.Operation;
 import io.debezium.pipeline.EventDispatcher;
 import io.debezium.pipeline.source.spi.ChangeEventSource.ChangeEventSourceContext;
 import io.debezium.relational.Table;
 import io.debezium.relational.TableId;
-import io.debezium.util.Clock;
 
 /**
  * This class process entries obtained from LogMiner view.
@@ -56,8 +55,8 @@ class LogMinerQueryResultProcessor {
     private final OracleDatabaseSchema schema;
     private final EventDispatcher<TableId> dispatcher;
     private final OracleConnectorConfig connectorConfig;
-    private final Clock clock;
     private final HistoryRecorder historyRecorder;
+    private final SelectLobParser selectLobParser;
 
     private Scn currentOffsetScn = Scn.NULL;
     private Scn currentOffsetCommitScn = Scn.NULL;
@@ -68,17 +67,17 @@ class LogMinerQueryResultProcessor {
                                  TransactionalBuffer transactionalBuffer,
                                  OracleOffsetContext offsetContext, OracleDatabaseSchema schema,
                                  EventDispatcher<TableId> dispatcher,
-                                 Clock clock, HistoryRecorder historyRecorder) {
+                                 HistoryRecorder historyRecorder) {
         this.context = context;
         this.streamingMetrics = streamingMetrics;
         this.transactionalBuffer = transactionalBuffer;
         this.offsetContext = offsetContext;
         this.schema = schema;
         this.dispatcher = dispatcher;
-        this.clock = clock;
         this.historyRecorder = historyRecorder;
         this.connectorConfig = connectorConfig;
         this.dmlParser = resolveParser(connectorConfig, schema.getValueConverters());
+        this.selectLobParser = new SelectLobParser();
     }
 
     private static DmlParser resolveParser(OracleConnectorConfig connectorConfig, OracleValueConverters valueConverters) {
@@ -91,7 +90,6 @@ private static DmlParser resolveParser(OracleConnectorConfig connectorConfig, Or
     /**
      * This method does all the job
      * @param resultSet the info from LogMiner view
-     * @return number of processed DMLs from the given resultSet
      * @throws SQLException thrown if any database exception occurs
      */
     void processResult(ResultSet resultSet) throws SQLException {
@@ -104,6 +102,10 @@ void processResult(ResultSet resultSet) throws SQLException {
             rows++;
 
             Scn scn = RowMapper.getScn(resultSet);
+            if (scn.isNull()) {
+                throw new DebeziumException("Unexpected null SCN detected in LogMiner results");
+            }
+
             String tableName = RowMapper.getTableName(resultSet);
             String segOwner = RowMapper.getSegOwner(resultSet);
             int operationCode = RowMapper.getOperationCode(resultSet);
@@ -113,12 +115,12 @@ void processResult(ResultSet resultSet) throws SQLException {
             String userName = RowMapper.getUsername(resultSet);
             String rowId = RowMapper.getRowId(resultSet);
             int rollbackFlag = RowMapper.getRollbackFlag(resultSet);
+            int sequence = RowMapper.getSequence(resultSet);
+            Object rsId = RowMapper.getRsId(resultSet);
+            long hash = RowMapper.getHash(resultSet);
+            boolean dml = isDmlOperation(operationCode);
 
-            boolean isDml = false;
-            if (operationCode == RowMapper.INSERT || operationCode == RowMapper.UPDATE || operationCode == RowMapper.DELETE) {
-                isDml = true;
-            }
-            String redoSql = RowMapper.getSqlRedo(resultSet, isDml, historyRecorder, scn, tableName, segOwner, operationCode, changeTime, txId);
+            String redoSql = RowMapper.getSqlRedo(resultSet, dml, historyRecorder, scn, tableName, segOwner, operationCode, changeTime, txId);
 
             LOGGER.trace("scn={}, operationCode={}, operation={}, table={}, segOwner={}, userName={}, rowId={}, rollbackFlag={}", scn, operationCode, operation,
                     tableName, segOwner, userName, rowId, rollbackFlag);
@@ -126,114 +128,139 @@ void processResult(ResultSet resultSet) throws SQLException {
             String logMessage = String.format("transactionId=%s, SCN=%s, table_name=%s, segOwner=%s, operationCode=%s, offsetSCN=%s, " +
                     " commitOffsetSCN=%s", txId, scn, tableName, segOwner, operationCode, offsetContext.getScn(), offsetContext.getCommitScn());
 
-            if (scn.isNull()) {
-                LogMinerHelper.logWarn(streamingMetrics, "Scn is null for {}", logMessage);
-                return;
-            }
-
-            // Commit
-            if (operationCode == RowMapper.COMMIT) {
-                if (transactionalBuffer.isTransactionRegistered(txId)) {
+            switch (operationCode) {
+                case RowMapper.START: {
+                    // Register start transaction.
+                    // If already registered, does nothing due to overlapping mining strategy.
+                    transactionalBuffer.registerTransaction(txId, scn);
+                    break;
+                }
+                case RowMapper.COMMIT: {
+                    // Commits a transaction
+                    if (transactionalBuffer.isTransactionRegistered(txId)) {
+                        historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, 0, redoSql);
+                        if (transactionalBuffer.commit(txId, scn, offsetContext, changeTime, context, logMessage, dispatcher)) {
+                            LOGGER.trace("COMMIT, {}", logMessage);
+                            commitCounter++;
+                        }
+                    }
+                    break;
+                }
+                case RowMapper.ROLLBACK: {
+                    // Rollback a transaction
+                    if (transactionalBuffer.isTransactionRegistered(txId)) {
+                        historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, 0, redoSql);
+                        if (transactionalBuffer.rollback(txId, logMessage)) {
+                            LOGGER.trace("ROLLBACK, {}", logMessage);
+                            rollbackCounter++;
+                        }
+                    }
+                    break;
+                }
+                case RowMapper.DDL: {
                     historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, 0, redoSql);
-                }
-                if (transactionalBuffer.commit(txId, scn, offsetContext, changeTime, context, logMessage, dispatcher)) {
-                    LOGGER.trace("COMMIT, {}", logMessage);
-                    commitCounter++;
-                }
-                continue;
-            }
-
-            // Rollback
-            if (operationCode == RowMapper.ROLLBACK) {
-                if (transactionalBuffer.isTransactionRegistered(txId)) {
-                    historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, 0, redoSql);
-                }
-                if (transactionalBuffer.rollback(txId, logMessage)) {
-                    LOGGER.trace("ROLLBACK, {}", logMessage);
-                    rollbackCounter++;
-                }
-                continue;
-            }
-
-            // DDL
-            if (operationCode == RowMapper.DDL) {
-                historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, 0, redoSql);
-                LOGGER.info("DDL: {}, REDO_SQL: {}", logMessage, redoSql);
-                try {
-                    if (tableName != null) {
-                        final TableId tableId = RowMapper.getTableId(connectorConfig.getCatalogName(), resultSet);
-                        dispatcher.dispatchSchemaChangeEvent(tableId,
-                                new OracleSchemaChangeEventEmitter(
-                                        connectorConfig,
-                                        offsetContext,
-                                        tableId,
-                                        tableId.catalog(),
-                                        tableId.schema(),
-                                        redoSql,
-                                        schema,
-                                        changeTime.toInstant(),
-                                        streamingMetrics));
+                    LOGGER.info("DDL: {}, REDO_SQL: {}", logMessage, redoSql);
+                    try {
+                        if (tableName != null) {
+                            final TableId tableId = RowMapper.getTableId(connectorConfig.getCatalogName(), resultSet);
+                            dispatcher.dispatchSchemaChangeEvent(tableId,
+                                     new OracleSchemaChangeEventEmitter(
+                                             connectorConfig,
+                                             offsetContext,
+                                             tableId,
+                                             tableId.catalog(),
+                                             tableId.schema(),
+                                             redoSql,
+                                             schema,
+                                             changeTime.toInstant(),
+                                             streamingMetrics));
+                        }
+                    }
+                    catch (InterruptedException e) {
+                        throw new DebeziumException("Failed to dispatch DDL event", e);
                     }
                 }
-                catch (InterruptedException e) {
-                    throw new DebeziumException("Failed to dispatch DDL event", e);
+                case RowMapper.MISSING_SCN: {
+                    historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, 0, redoSql);
+                    LogMinerHelper.logWarn(streamingMetrics, "Missing SCN, {}", logMessage);
+                    break;
                 }
-                continue;
-            }
-
-            // MISSING_SCN
-            if (operationCode == RowMapper.MISSING_SCN) {
-                historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, 0, redoSql);
-                LogMinerHelper.logWarn(streamingMetrics, "Missing SCN,  {}", logMessage);
-                continue;
-            }
-
-            // DML
-            if (isDml) {
-                final TableId tableId = RowMapper.getTableId(connectorConfig.getCatalogName(), resultSet);
-
-                LOGGER.trace("DML,  {}, sql {}", logMessage, redoSql);
-                if (redoSql == null) {
-                    LOGGER.trace("Redo SQL was empty, DML operation skipped.");
-                    continue;
+                case RowMapper.SELECT_LOB_LOCATOR: {
+                    final TableId tableId = RowMapper.getTableId(connectorConfig.getCatalogName(), resultSet);
+                    final LogMinerDmlEntry entry = selectLobParser.parse(redoSql);
+                    entry.setObjectOwner(segOwner);
+                    entry.setSourceTime(changeTime);
+                    entry.setTransactionId(txId);
+                    entry.setObjectName(tableName);
+                    entry.setScn(scn);
+                    entry.setRowId(rowId);
+                    entry.setSequence(sequence);
+                    transactionalBuffer.registerSelectLobOperation(operationCode, txId, scn, tableId, entry,
+                            selectLobParser.getColumnName(), selectLobParser.isBinary(), changeTime.toInstant(), rowId, rsId, hash);
+                    break;
                 }
-
-                dmlCounter++;
-                switch (operationCode) {
-                    case RowMapper.INSERT:
-                        insertCounter++;
-                        break;
-                    case RowMapper.UPDATE:
-                        updateCounter++;
-                        break;
-                    case RowMapper.DELETE:
-                        deleteCounter++;
-                        break;
+                case RowMapper.LOB_WRITE: {
+                    final TableId tableId = RowMapper.getTableId(connectorConfig.getCatalogName(), resultSet);
+                    transactionalBuffer.registerLobWriteOperation(operationCode, txId, scn, tableId, redoSql,
+                            changeTime.toInstant(), rowId, rsId, hash);
+                    break;
                 }
-
-                final Table table = schema.tableFor(tableId);
-                if (table == null) {
-                    LogMinerHelper.logWarn(streamingMetrics, "DML for table '{}' that is not known to this connector, skipping.", tableId);
-                    continue;
+                case RowMapper.LOB_ERASE: {
+                    final TableId tableId = RowMapper.getTableId(connectorConfig.getCatalogName(), resultSet);
+                    transactionalBuffer.registerLobEraseOperation(operationCode, txId, scn, tableId, changeTime.toInstant(), rowId, rsId, hash);
+                    break;
                 }
+                case RowMapper.INSERT:
+                case RowMapper.UPDATE:
+                case RowMapper.DELETE: {
+                    LOGGER.trace("DML, {}, sql {}", logMessage, redoSql);
+                    if (redoSql != null) {
+                        final TableId tableId = RowMapper.getTableId(connectorConfig.getCatalogName(), resultSet);
+                        dmlCounter++;
+                        switch (operationCode) {
+                            case RowMapper.INSERT:
+                                insertCounter++;
+                                break;
+                            case RowMapper.UPDATE:
+                                updateCounter++;
+                                break;
+                            case RowMapper.DELETE:
+                                deleteCounter++;
+                                break;
+                        }
 
-                if (rollbackFlag == 1) {
-                    // DML operation is to undo partial or all operations as a result of a rollback.
-                    // This can be situations where an insert or update causes a constraint violation
-                    // and a subsequent operation is written to the logs to revert the change.
-                    transactionalBuffer.undoDmlOperation(txId, rowId, tableId);
-                    continue;
+                        final Table table = schema.tableFor(tableId);
+                        if (table == null) {
+                            LogMinerHelper.logWarn(streamingMetrics, "DML for table '{}' that is not known to this connector, skipping.", tableId);
+                            continue;
+                        }
+
+                        if (rollbackFlag == 1) {
+                            // DML operation is to undo partial or all operations as a result of a rollback.
+                            // This can be situations where an insert or update causes a constraint violation
+                            // and a subsequent operation is written to the logs to revert the change.
+                            transactionalBuffer.undoDmlOperation(txId, rowId, tableId);
+                            continue;
+                        }
+
+                        final LogMinerDmlEntry dmlEntry = parse(redoSql, table, txId);
+                        dmlEntry.setObjectOwner(segOwner);
+                        dmlEntry.setSourceTime(changeTime);
+                        dmlEntry.setTransactionId(txId);
+                        dmlEntry.setObjectName(tableName);
+                        dmlEntry.setScn(scn);
+                        dmlEntry.setRowId(rowId);
+                        dmlEntry.setSequence(sequence);
+
+                        transactionalBuffer.registerDmlOperation(operationCode, txId, scn, tableId, dmlEntry,
+                                changeTime.toInstant(), rowId, rsId, hash);
+                    }
+                    else {
+                        LOGGER.trace("Redo SQL was empty, DML operation skipped.");
+                    }
+
+                    break;
                 }
-
-                final LogMinerDmlEntry dmlEntry = parse(redoSql, table, txId);
-                dmlEntry.setObjectOwner(segOwner);
-                dmlEntry.setSourceTime(changeTime);
-                dmlEntry.setTransactionId(txId);
-                dmlEntry.setObjectName(tableName);
-                dmlEntry.setScn(scn);
-                dmlEntry.setRowId(rowId);
-
-                transactionalBuffer.registerDmlOperation(operationCode, txId, scn, tableId, dmlEntry, changeTime.toInstant(), rowId);
             }
         }
 
@@ -311,7 +338,7 @@ private LogMinerDmlEntry parse(String redoSql, Table table, String txId) {
         }
 
         if (dmlEntry.getOldValues().isEmpty()) {
-            if (Operation.UPDATE.equals(dmlEntry.getCommandType()) || Operation.DELETE.equals(dmlEntry.getCommandType())) {
+            if (RowMapper.UPDATE == dmlEntry.getOperation() || RowMapper.DELETE == dmlEntry.getOperation()) {
                 LOGGER.warn("The DML event '{}' contained no before state.", redoSql);
                 streamingMetrics.incrementWarningCount();
             }
@@ -319,4 +346,15 @@ private LogMinerDmlEntry parse(String redoSql, Table table, String txId) {
 
         return dmlEntry;
     }
+
+    private static boolean isDmlOperation(int operationCode) {
+        switch (operationCode) {
+            case RowMapper.INSERT:
+            case RowMapper.UPDATE:
+            case RowMapper.DELETE:
+                return true;
+            default:
+                return false;
+        }
+    }
 }

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/LogMinerStreamingChangeEventSource.java

@@ -46,7 +46,6 @@
 import io.debezium.connector.oracle.OracleDatabaseSchema;
 import io.debezium.connector.oracle.OracleOffsetContext;
 import io.debezium.connector.oracle.OracleStreamingChangeEventSourceMetrics;
-import io.debezium.connector.oracle.OracleTaskContext;
 import io.debezium.connector.oracle.Scn;
 import io.debezium.jdbc.JdbcConfiguration;
 import io.debezium.pipeline.ErrorHandler;
@@ -74,7 +73,6 @@ public class LogMinerStreamingChangeEventSource implements StreamingChangeEventS
     private final Set<String> racHosts = new HashSet<>();
     private final JdbcConfiguration jdbcConfiguration;
     private final OracleConnectorConfig.LogMiningStrategy strategy;
-    private final OracleTaskContext taskContext;
     private final ErrorHandler errorHandler;
     private final boolean isContinuousMining;
     private final OracleStreamingChangeEventSourceMetrics streamingMetrics;
@@ -88,8 +86,7 @@ public class LogMinerStreamingChangeEventSource implements StreamingChangeEventS
     public LogMinerStreamingChangeEventSource(OracleConnectorConfig connectorConfig, OracleOffsetContext offsetContext,
                                               OracleConnection jdbcConnection, EventDispatcher<TableId> dispatcher,
                                               ErrorHandler errorHandler, Clock clock, OracleDatabaseSchema schema,
-                                              OracleTaskContext taskContext, Configuration jdbcConfig,
-                                              OracleStreamingChangeEventSourceMetrics streamingMetrics) {
+                                              Configuration jdbcConfig, OracleStreamingChangeEventSourceMetrics streamingMetrics) {
         this.jdbcConnection = jdbcConnection;
         this.dispatcher = dispatcher;
         this.clock = clock;
@@ -99,7 +96,6 @@ public LogMinerStreamingChangeEventSource(OracleConnectorConfig connectorConfig,
         this.strategy = connectorConfig.getLogMiningStrategy();
         this.isContinuousMining = connectorConfig.isContinuousMining();
         this.errorHandler = errorHandler;
-        this.taskContext = taskContext;
         this.streamingMetrics = streamingMetrics;
         this.jdbcConfiguration = JdbcConfiguration.adapt(jdbcConfig);
         this.isRac = connectorConfig.isRacSystem();
@@ -131,7 +127,7 @@ public void execute(ChangeEventSourceContext context) {
                 setNlsSessionParameters(jdbcConnection);
                 checkSupplementalLogging(jdbcConnection, connectorConfig.getPdbName(), schema);
 
-                initializeRedoLogsForMining(jdbcConnection, false, archiveLogRetention);
+                initializeRedoLogsForMining(jdbcConnection, false, archiveLogRetention, startScn);
 
                 HistoryRecorder historyRecorder = connectorConfig.getLogMiningHistoryRecorder();
 
@@ -141,7 +137,7 @@ public void execute(ChangeEventSourceContext context) {
 
                     final LogMinerQueryResultProcessor processor = new LogMinerQueryResultProcessor(context, jdbcConnection,
                             connectorConfig, streamingMetrics, transactionalBuffer, offsetContext, schema, dispatcher,
-                            clock, historyRecorder);
+                            historyRecorder);
 
                     final String query = SqlUtils.logMinerContentsQuery(connectorConfig, jdbcConnection.username());
                     try (PreparedStatement miningView = jdbcConnection.connection().prepareStatement(query, ResultSet.TYPE_FORWARD_ONLY,
@@ -165,7 +161,7 @@ public void execute(ChangeEventSourceContext context) {
                                         startScn, endScn, offsetContext.getScn(), strategy, isContinuousMining);
                                 endMining(jdbcConnection);
 
-                                initializeRedoLogsForMining(jdbcConnection, true, archiveLogRetention);
+                                initializeRedoLogsForMining(jdbcConnection, true, archiveLogRetention, startScn);
 
                                 abandonOldTransactionsIfExist(jdbcConnection, transactionalBuffer);
 
@@ -174,8 +170,13 @@ public void execute(ChangeEventSourceContext context) {
                                 currentRedoLogSequences = getCurrentRedoLogSequences();
                             }
 
-                            startLogMining(jdbcConnection, startScn, endScn, strategy, isContinuousMining, streamingMetrics);
+                            Scn miningStartScn = offsetContext.getCommitScn();
+                            if (miningStartScn == null) {
+                                miningStartScn = offsetContext.getScn();
+                            }
+                            startLogMining(jdbcConnection, miningStartScn, endScn, strategy, isContinuousMining, streamingMetrics);
 
+                            LOGGER.trace("Fetching LogMiner view results SCN {} to {}", startScn, endScn);
                             stopwatch.start();
                             miningView.setFetchSize(connectorConfig.getMaxQueueSize());
                             miningView.setFetchDirection(ResultSet.FETCH_FORWARD);
@@ -185,13 +186,7 @@ public void execute(ChangeEventSourceContext context) {
                                 Duration lastDurationOfBatchCapturing = stopwatch.stop().durations().statistics().getTotal();
                                 streamingMetrics.setLastDurationOfBatchCapturing(lastDurationOfBatchCapturing);
                                 processor.processResult(rs);
-
-                                startScn = endScn;
-
-                                if (transactionalBuffer.isEmpty()) {
-                                    LOGGER.debug("Transactional buffer empty, updating offset's SCN {}", startScn);
-                                    offsetContext.setScn(startScn);
-                                }
+                                startScn = transactionalBuffer.updateOffsetContext(offsetContext);
                             }
 
                             streamingMetrics.setCurrentBatchProcessingTime(Duration.between(start, Instant.now()));
@@ -228,7 +223,7 @@ private void abandonOldTransactionsIfExist(OracleConnection connection, Transact
         }
     }
 
-    private void initializeRedoLogsForMining(OracleConnection connection, boolean postEndMiningSession, Duration archiveLogRetention) throws SQLException {
+    private void initializeRedoLogsForMining(OracleConnection connection, boolean postEndMiningSession, Duration archiveLogRetention, Scn startScn) throws SQLException {
         if (!postEndMiningSession) {
             if (OracleConnectorConfig.LogMiningStrategy.CATALOG_IN_REDO.equals(strategy)) {
                 buildDataDictionary(connection);

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/RowMapper.java

@@ -33,10 +33,15 @@ public class RowMapper {
     public static final int DELETE = 2;
     public static final int UPDATE = 3;
     public static final int DDL = 5;
+    public static final int START = 6;
     public static final int COMMIT = 7;
+    public static final int SELECT_LOB_LOCATOR = 9;
+    public static final int LOB_WRITE = 10;
+    public static final int LOB_ERASE = 29;
     public static final int MISSING_SCN = 34;
     public static final int ROLLBACK = 36;
 
+    // columns mapped by index based on query in SqlUtils#logMinerContentsQuery
     private static final int SCN = 1;
     private static final int SQL_REDO = 2;
     private static final int OPERATION_CODE = 3;
@@ -49,12 +54,15 @@ public class RowMapper {
     private static final int USERNAME = 10;
     private static final int ROW_ID = 11;
     private static final int ROLLBACK_FLAG = 12;
+    private static final int SEQUENCE = 13;
+    private static final int RS_ID = 14;
+    private static final int HASH = 15;
+
     private static final Calendar UTC_CALENDAR = Calendar.getInstance(TimeZone.getTimeZone(ZoneOffset.UTC));
+
     // todo: add these for recording
     // private static final int SESSION_NUMBER = 10;
     // private static final int SERIAL_NUMBER = 11;
-    // private static final int RS_ID = 12;
-    // private static final int SSN = 12;
 
     public static String getOperation(ResultSet rs) throws SQLException {
         return rs.getString(OPERATION);
@@ -111,6 +119,7 @@ public static String getTransactionId(ResultSet rs) throws SQLException {
      * @param changeTime time of change
      * @param txId transaction ID
      * @return the redo SQL
+     * @throws SQLException if an exception occurred while interacting with the data source
      */
     public static String getSqlRedo(ResultSet rs, boolean isDml, HistoryRecorder historyRecorder, Scn scn, String tableName,
                                     String segOwner, int operationCode, Timestamp changeTime, String txId)
@@ -137,10 +146,12 @@ public static String getSqlRedo(ResultSet rs, boolean isDml, HistoryRecorder his
                 LOGGER.warn("LOB value was truncated due to the connector limitation of {} MB", 40);
                 break;
             }
-            result.append(rs.getString(SQL_REDO));
+
+            redoSql = rs.getString(SQL_REDO);
+            result.append(redoSql);
             csf = rs.getInt(CSF);
             if (isDml) {
-                historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, csf, rs.getString(SQL_REDO));
+                historyRecorder.record(scn, tableName, segOwner, operationCode, changeTime, txId, csf, redoSql);
             }
         }
 
@@ -159,4 +170,15 @@ public static TableId getTableId(String catalogName, ResultSet rs) throws SQLExc
         return new TableId(catalogName, rs.getString(SEG_OWNER), rs.getString(TABLE_NAME));
     }
 
+    public static int getSequence(ResultSet rs) throws SQLException {
+        return rs.getInt(SEQUENCE);
+    }
+
+    public static Object getRsId(ResultSet rs) throws SQLException {
+        return rs.getObject(RS_ID);
+    }
+
+    public static long getHash(ResultSet rs) throws SQLException {
+        return rs.getLong(HASH);
+    }
 }

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/SqlUtils.java

@@ -8,7 +8,6 @@
 import java.io.IOException;
 import java.sql.SQLRecoverableException;
 import java.time.Duration;
-import java.time.LocalDateTime;
 import java.util.Iterator;
 import java.util.List;
 import java.util.regex.Pattern;
@@ -282,7 +281,8 @@ static String startLogMinerStatement(Scn startScn, Scn endScn, OracleConnectorCo
      */
     static String logMinerContentsQuery(OracleConnectorConfig connectorConfig, String logMinerUser) {
         StringBuilder query = new StringBuilder();
-        query.append("SELECT SCN, SQL_REDO, OPERATION_CODE, TIMESTAMP, XID, CSF, TABLE_NAME, SEG_OWNER, OPERATION, USERNAME, ROW_ID, ROLLBACK ");
+        query.append("SELECT SCN, SQL_REDO, OPERATION_CODE, TIMESTAMP, XID, CSF, TABLE_NAME, SEG_OWNER, OPERATION, USERNAME, ");
+        query.append("ROW_ID, ROLLBACK, SEQUENCE#, RS_ID, ORA_HASH(SCN||OPERATION||RS_ID||SEQUENCE#||RTRIM(SUBSTR(SQL_REDO,1,256))) ");
         query.append("FROM ").append(LOGMNR_CONTENTS_VIEW).append(" ");
         query.append("WHERE ");
         query.append("SCN > ? AND SCN <= ? ");
@@ -290,9 +290,9 @@ static String logMinerContentsQuery(OracleConnectorConfig connectorConfig, Strin
         // MISSING_SCN/DDL only when not performed by excluded users
         // For DDL, the `INTERNAL DDL%` info rows should be excluded as these are commands executed by the database that
         // typically perform operations such as renaming a deleted object when dropped if the drop doesn't specify PURGE
-        query.append("(OPERATION_CODE IN (5,34) AND USERNAME NOT IN (").append(getExcludedUsers(logMinerUser)).append(") AND INFO NOT LIKE 'INTERNAL DDL%') ");
+        query.append("(OPERATION_CODE IN (5,9,10,11,29,34) AND USERNAME NOT IN (").append(getExcludedUsers(logMinerUser)).append(") AND INFO NOT LIKE 'INTERNAL DDL%') ");
         // COMMIT/ROLLBACK
-        query.append("OR (OPERATION_CODE IN (7,36)) ");
+        query.append("OR (OPERATION_CODE IN (6,7,36)) ");
         // INSERT/UPDATE/DELETE
         query.append("OR ");
         query.append("(OPERATION_CODE IN (1,2,3) ");
@@ -468,18 +468,4 @@ public static boolean connectionProblem(Throwable e) {
                 e.getMessage().toUpperCase().contains("CONNECTION IS CLOSED") ||
                 e.getMessage().toUpperCase().startsWith("NO MORE DATA TO READ FROM SOCKET");
     }
-
-    public static long parseRetentionFromName(String historyTableName) {
-        String[] tokens = historyTableName.split("_");
-        if (tokens.length != 7) {
-            return 0;
-        }
-        LocalDateTime recorded = LocalDateTime.of(
-                Integer.parseInt(tokens[2]), // year
-                Integer.parseInt(tokens[3]), // month
-                Integer.parseInt(tokens[4]), // days
-                Integer.parseInt(tokens[5]), // hours
-                Integer.parseInt(tokens[6])); // minutes
-        return Duration.between(recorded, LocalDateTime.now()).toHours();
-    }
 }

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/TransactionalBuffer.java

@@ -16,20 +16,26 @@
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
+import java.util.function.Supplier;
 
 import org.apache.kafka.connect.errors.DataException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import io.debezium.DebeziumException;
 import io.debezium.annotation.NotThreadSafe;
+import io.debezium.connector.oracle.BlobChunkList;
 import io.debezium.connector.oracle.OracleDatabaseSchema;
 import io.debezium.connector.oracle.OracleOffsetContext;
 import io.debezium.connector.oracle.OracleStreamingChangeEventSourceMetrics;
 import io.debezium.connector.oracle.Scn;
+import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValue;
+import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValueImpl;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
 import io.debezium.pipeline.ErrorHandler;
 import io.debezium.pipeline.EventDispatcher;
 import io.debezium.pipeline.source.spi.ChangeEventSource;
+import io.debezium.relational.Table;
 import io.debezium.relational.TableId;
 import io.debezium.util.Clock;
 
@@ -50,13 +56,17 @@ public final class TransactionalBuffer implements AutoCloseable {
     private final ErrorHandler errorHandler;
     private final Set<String> abandonedTransactionIds;
     private final Set<String> rolledBackTransactionIds;
+    private final Set<RecentlyCommittedTransaction> recentlyCommittedTransactionIds;
     private final OracleStreamingChangeEventSourceMetrics streamingMetrics;
 
     private Scn lastCommittedScn;
+    private Scn maxCommittedScn;
 
     /**
      * Constructor to create a new instance.
      *
+     * @param schema database schema
+     * @param clock system clock
      * @param errorHandler the connector error handler
      * @param streamingMetrics the streaming metrics
      */
@@ -66,8 +76,10 @@ public final class TransactionalBuffer implements AutoCloseable {
         this.clock = clock;
         this.errorHandler = errorHandler;
         this.lastCommittedScn = Scn.NULL;
+        this.maxCommittedScn = Scn.NULL;
         this.abandonedTransactionIds = new HashSet<>();
         this.rolledBackTransactionIds = new HashSet<>();
+        this.recentlyCommittedTransactionIds = new HashSet<>();
         this.streamingMetrics = streamingMetrics;
     }
 
@@ -88,25 +100,82 @@ Set<String> getRolledBackTransactionIds() {
      * @param parseEntry parser entry
      * @param changeTime time the DML operation occurred
      * @param rowId unique row identifier
+     * @param rsId rollback sequence identifier
+     * @param hash unique row hash
      */
-    void registerDmlOperation(int operation, String transactionId, Scn scn, TableId tableId, LogMinerDmlEntry parseEntry, Instant changeTime, String rowId) {
-        if (abandonedTransactionIds.contains(transactionId)) {
-            LogMinerHelper.logWarn(streamingMetrics, "Captured DML for abandoned transaction {}, ignored.", transactionId);
-            return;
-        }
-        if (rolledBackTransactionIds.contains(transactionId)) {
-            LogMinerHelper.logWarn(streamingMetrics, "Captured DML for rolled back transaction {}, ignored.", transactionId);
-            return;
-        }
-
-        Transaction transaction = transactions.computeIfAbsent(transactionId, s -> new Transaction(transactionId, scn));
-        transaction.events.add(new DmlEvent(operation, parseEntry, scn, tableId, rowId));
+    void registerDmlOperation(int operation, String transactionId, Scn scn, TableId tableId, LogMinerDmlEntry parseEntry,
+                              Instant changeTime, String rowId, Object rsId, long hash) {
+        registerEvent(transactionId, scn, hash, () -> new DmlEvent(operation, parseEntry, scn, tableId, rowId, rsId));
 
         streamingMetrics.setActiveTransactions(transactions.size());
         streamingMetrics.incrementRegisteredDmlCount();
         streamingMetrics.calculateLagMetrics(changeTime);
     }
 
+    /**
+     * Register a {@code SEL_LOB_LOCATOR} operation with the transaction buffer.
+     *
+     * @param operation operation type
+     * @param transactionId unique transaction identifier
+     * @param scn system change number
+     * @param tableId table identifier
+     * @param parseEntry parser entry
+     * @param changeTime time the operation occurred
+     * @param rowId unique row identifier
+     * @param rsId rollback sequence identifier
+     * @param hash unique row hash
+     */
+    void registerSelectLobOperation(int operation, String transactionId, Scn scn, TableId tableId, LogMinerDmlEntry parseEntry,
+                                    String columnName, boolean binaryData, Instant changeTime, String rowId, Object rsId, long hash) {
+        registerEvent(transactionId, scn, hash, () -> new SelectLobLocatorEvent(operation, parseEntry, columnName, binaryData, scn, tableId, rowId, rsId));
+
+        streamingMetrics.setActiveTransactions(transactions.size());
+        streamingMetrics.calculateLagMetrics(changeTime);
+    }
+
+    /**
+     * Register a {@code LOB_WRITE} operation with the transaction buffer.
+     *
+     * @param operation operation type
+     * @param transactionId unique transaction identifier
+     * @param scn system change number
+     * @param tableId table identifier
+     * @param data data written by the LOB operation
+     * @param changeTime time the operation occurred
+     * @param rowId unique row identifier
+     * @param rsId rollback sequence identifier
+     * @param hash unique row hash
+     */
+    void registerLobWriteOperation(int operation, String transactionId, Scn scn, TableId tableId, String data,
+                                   Instant changeTime, String rowId, Object rsId, long hash) {
+        if (data != null) {
+            final String sql = parseLobWriteSql(data);
+            registerEvent(transactionId, scn, hash, () -> new LobWriteEvent(operation, sql, scn, tableId, rowId, rsId));
+
+            streamingMetrics.setActiveTransactions(transactions.size());
+            streamingMetrics.calculateLagMetrics(changeTime);
+        }
+    }
+
+    /**
+     * Register a {@code LOB_ERASE} operation with the transction buffer.
+     *
+     * @param operation operation type
+     * @param transactionId unique transaction identifier
+     * @param scn system change number
+     * @param tableId table identifier
+     * @param changeTime time the operation occurred
+     * @param rowId unique row identifier
+     * @param rsId rollback sequence identifier
+     * @param hash unique row hash
+     */
+    void registerLobEraseOperation(int operation, String transactionId, Scn scn, TableId tableId, Instant changeTime,
+                                   String rowId, Object rsId, long hash) {
+        registerEvent(transactionId, scn, hash, () -> new LobEraseEvent(operation, scn, tableId, rowId, rsId));
+        streamingMetrics.setActiveTransactions(transactions.size());
+        streamingMetrics.calculateLagMetrics(changeTime);
+    }
+
     /**
      * Undo a staged DML operation in the transaction buffer.
      *
@@ -130,6 +199,20 @@ void undoDmlOperation(String transactionId, String undoRowId, TableId tableId) {
         });
     }
 
+    /**
+     * Register a new transaction with the transaction buffer.
+     *
+     * @param transactionId unique transaction identifier
+     * @param scn starting SCN of the transaction
+     */
+    void registerTransaction(String transactionId, Scn scn) {
+        Transaction transaction = transactions.get(transactionId);
+        if (transaction == null) {
+            transactions.put(transactionId, new Transaction(transactionId, scn));
+            streamingMetrics.setActiveTransactions(transactions.size());
+        }
+    }
+
     /**
      * Commits a transaction by looking up the transaction in the buffer and if exists, all registered callbacks
      * will be executed in chronological order, emitting events for each followed by a transaction commit event.
@@ -166,19 +249,14 @@ boolean commit(String transactionId, Scn scn, OracleOffsetContext offsetContext,
             return false;
         }
 
+        reconcileTransaction(transaction);
+
         LOGGER.trace("COMMIT, {}, smallest SCN: {}", debugMessage, smallestScn);
-        commit(context, offsetContext, start, transaction, timestamp, smallestScn, scn, dispatcher);
-
-        return true;
-    }
-
-    private void commit(ChangeEventSource.ChangeEventSourceContext context, OracleOffsetContext offsetContext, Instant start,
-                        Transaction transaction, Timestamp timestamp, Scn smallestScn, Scn scn, EventDispatcher<TableId> dispatcher) {
         try {
             int counter = transaction.events.size();
-            for (DmlEvent event : transaction.events) {
+            for (LogMinerEvent event : transaction.events) {
                 if (!context.isRunning()) {
-                    return;
+                    return false;
                 }
 
                 // Update SCN in offset context only if processed SCN less than SCN among other transactions
@@ -186,6 +264,7 @@ private void commit(ChangeEventSource.ChangeEventSourceContext context, OracleOf
                     offsetContext.setScn(event.getScn());
                     streamingMetrics.setOldestScn(event.getScn());
                 }
+
                 offsetContext.setTransactionId(transaction.transactionId);
                 offsetContext.setSourceTime(timestamp.toInstant());
                 offsetContext.setTableId(event.getTableId());
@@ -193,23 +272,31 @@ private void commit(ChangeEventSource.ChangeEventSourceContext context, OracleOf
                     offsetContext.setCommitScn(scn);
                 }
 
-                LOGGER.trace("Processing DML event {} with SCN {}", event.getEntry(), event.getScn());
+                LOGGER.trace("Processing event {}", event);
                 dispatcher.dispatchDataChangeEvent(event.getTableId(),
                         new LogMinerChangeRecordEmitter(
                                 offsetContext,
                                 event.getEntry(),
                                 schema.tableFor(event.getTableId()),
                                 clock));
+
             }
 
             lastCommittedScn = Scn.valueOf(scn.longValue());
-
             if (!transaction.events.isEmpty()) {
                 dispatcher.dispatchTransactionCommittedEvent(offsetContext);
             }
+
+            if (lastCommittedScn.compareTo(maxCommittedScn) > 0) {
+                LOGGER.trace("Updated transaction buffer max commit SCN to '{}'", lastCommittedScn);
+                maxCommittedScn = lastCommittedScn;
+            }
+
+            // cache recent transaction and commit scn for handling offset updates
+            recentlyCommittedTransactionIds.add(new RecentlyCommittedTransaction(transaction, scn));
         }
         catch (InterruptedException e) {
-            LogMinerHelper.logError(streamingMetrics, "Thread interrupted during running", e);
+            LogMinerHelper.logError(streamingMetrics, "Commit interrupted", e);
             Thread.currentThread().interrupt();
         }
         catch (Exception e) {
@@ -223,6 +310,33 @@ private void commit(ChangeEventSource.ChangeEventSourceContext context, OracleOf
             streamingMetrics.setOffsetScn(offsetContext.getScn());
             streamingMetrics.setLastCommitDuration(Duration.between(start, Instant.now()));
         }
+
+        return true;
+    }
+
+    /**
+     * Update the offset context based on the current state of the transaction buffer.
+     *
+     * @param offsetContext offset context, should not be {@code null}
+     * @return offset context SCN, never {@code null}
+     */
+    Scn updateOffsetContext(OracleOffsetContext offsetContext) {
+        if (transactions.isEmpty()) {
+            LOGGER.trace("Transaction buffer is empty, updating offset SCN to '{}'", maxCommittedScn);
+            offsetContext.setScn(maxCommittedScn);
+        }
+        else {
+            Scn minStartScn = transactions.values().stream().map(t -> t.firstScn).min(Scn::compareTo).orElse(Scn.NULL);
+            if (!minStartScn.isNull()) {
+                LOGGER.trace("Removing all commits up to SCN '{}'", minStartScn);
+                recentlyCommittedTransactionIds.removeIf(t -> t.firstScn.compareTo(minStartScn) < 0);
+                offsetContext.setScn(minStartScn.subtract(Scn.valueOf(1)));
+            }
+            else {
+                LOGGER.trace("Minimum SCN in transaction buffer is still SCN '{}'", minStartScn);
+            }
+        }
+        return offsetContext.getScn();
     }
 
     /**
@@ -322,10 +436,521 @@ public String toString() {
     @Override
     public void close() {
         transactions.clear();
+    }
 
-        if (this.streamingMetrics != null) {
-            // if metrics registered, unregister them
-            this.streamingMetrics.unregister(LOGGER);
+    /**
+     * Helper method to register a given {@link LogMinerEvent} implementation with the buffer.
+     *
+     * @param transactionId transaction id that contained the given event
+     * @param scn system change number for the event
+     * @param supplier supplier function to generate the event if validity checks pass
+     */
+    private void registerEvent(String transactionId, Scn scn, long hash, Supplier<LogMinerEvent> supplier) {
+        if (abandonedTransactionIds.contains(transactionId)) {
+            LogMinerHelper.logWarn(streamingMetrics, "Event for abandoned transaction {}, ignored.", transactionId);
+            return;
+        }
+        if (rolledBackTransactionIds.contains(transactionId)) {
+            LogMinerHelper.logWarn(streamingMetrics, "Event for rolled back transaction {}, ignored.", transactionId);
+            return;
+        }
+        if (recentlyCommittedTransactionIds.contains(transactionId)) {
+            LOGGER.trace("Event for transaction {} skipped, transaction already committed.", transactionId);
+            return;
+        }
+
+        Transaction transaction = transactions.computeIfAbsent(transactionId, s -> new Transaction(transactionId, scn));
+
+        // Event will only be registered with transaction if the computed hash doesn't already exist.
+        // This is necessary to handle overlapping mining session scopes
+        if (!transaction.eventHashes.contains(hash)) {
+            transaction.eventHashes.add(hash);
+            transaction.events.add(supplier.get());
+        }
+    }
+
+    /**
+     * Parses a {@code LOB_WRITE} operation SQL fragment.
+     *
+     * @param sql sql statement
+     * @return the parsed statement
+     * @throws DebeziumException if an unexpected SQL fragment is provided that cannot be parsed
+     */
+    private String parseLobWriteSql(String sql) {
+        if (sql == null) {
+            return null;
+        }
+
+        int start = sql.indexOf(":= '");
+        if (start != -1) {
+            // LOB_WRITE SQL is for a CLOB field
+            int end = sql.lastIndexOf("'");
+            return sql.substring(start + 4, end);
+        }
+
+        start = sql.indexOf(":= HEXTORAW");
+        if (start != -1) {
+            // LOB_WRITE SQL is for a BLOB field
+            int end = sql.lastIndexOf("'") + 2;
+            return sql.substring(start + 3, end);
+        }
+
+        throw new DebeziumException("Unable to parse unsupported LOB_WRITE SQL: " + sql);
+    }
+
+    /**
+     * Reconcile the specified transaction by merging multiple events that should be emitted as a single
+     * logical event, such as changes made to LOB column types that involve multiple events.
+     *
+     * @param transaction transaction to be reconciled, never {@code null}
+     */
+    private void reconcileTransaction(Transaction transaction) {
+        LOGGER.trace("Reconciling transaction {}", transaction.transactionId);
+        LogMinerEvent prevEvent = null;
+
+        int prevEventSize = transaction.events.size();
+        for (int i = 0; i < transaction.events.size();) {
+
+            final LogMinerEvent event = transaction.events.get(i);
+            LOGGER.trace("Processing event {}", event);
+
+            switch (event.getOperation()) {
+                case RowMapper.SELECT_LOB_LOCATOR:
+                    if (shouldMergeSelectLobLocatorEvent(transaction, i, (SelectLobLocatorEvent) event, prevEvent)) {
+                        continue;
+                    }
+                    break;
+                case RowMapper.INSERT:
+                case RowMapper.UPDATE:
+                    if (shouldMergeDmlEvent(transaction, i, (DmlEvent) event, prevEvent)) {
+                        continue;
+                    }
+                    break;
+            }
+
+            ++i;
+            prevEvent = event;
+            LOGGER.trace("Previous event is now {}", prevEvent);
+        }
+
+        if (transaction.events.size() != prevEventSize) {
+            LOGGER.trace("Reconciled transaction {} from {} events to {}.", transaction.transactionId, prevEventSize, transaction.events.size());
+        }
+        else {
+            LOGGER.trace("Transaction {} event queue was unmodified.", transaction.transactionId);
+        }
+    }
+
+    /**
+     * Attempts to merge the provided SEL_LOB_LOCATOR event with the previous event in the transaction.
+     *
+     * @param transaction transaction being processed, never {@code null}
+     * @param index event index being processed
+     * @param event event being processed, never {@code null}
+     * @param prevEvent previous event in the transaction, can be {@code null}
+     * @return true if the event is merged, false if the event was not merged.
+     */
+    private boolean shouldMergeSelectLobLocatorEvent(Transaction transaction, int index, SelectLobLocatorEvent event, LogMinerEvent prevEvent) {
+        LOGGER.trace("\tDetected SelectLobLocatorEvent for column '{}'", event.getColumnName());
+
+        // Read and combine all LOB_WRITE events that follow SEL_LOB_LOCATOR
+        Object lobData = null;
+        final List<String> lobWrites = readAndCombineLobWriteEvents(transaction, index, event.isBinaryData());
+        if (!lobWrites.isEmpty()) {
+            if (event.isBinaryData()) {
+                // For BLOB we pass the list of string chunks as-is to the value converter
+                lobData = new BlobChunkList(lobWrites);
+            }
+            else {
+                // For CLOB we go ahead and pre-process the List into a single string.
+                lobData = String.join("", lobWrites);
+            }
+        }
+
+        // Read and consume all LOB_ERASE events that follow SEL_LOB_LOCATOR
+        final int lobEraseEvents = readAndConsumeLobEraseEvents(transaction, index);
+        if (lobEraseEvents > 0) {
+            LOGGER.warn("LOB_ERASE for table '{}' column '{}' is not supported, use DML operations to manipulate LOB columns only.", event.getTableId(),
+                    event.getColumnName());
+            if (lobWrites.isEmpty()) {
+                // There are no write and only erase events, discard entire SEL_LOB_LOCATOR
+                // To simulate this, we treat this as a "merge" op so caller doesn't modify previous event
+                transaction.events.remove(index);
+                return true;
+            }
+        }
+        else if (lobEraseEvents == 0 && lobWrites.isEmpty()) {
+            // There were no LOB operations present, discard entire SEL_LOB_LOCATOR
+            // To simulate this, we treat this as a "merge" op so caller doesn't modify previous event
+            transaction.events.remove(index);
+            return true;
+        }
+
+        // SelectLobLocatorEvent can be treated as a parent DML operation where an update occurs on any
+        // LOB-based column. In this case, the event will be treated as an UPDATE event when emitted.
+
+        if (prevEvent == null) {
+            // There is no prior event, add column to this SelectLobLocatorEvent and don't merge.
+            LOGGER.trace("\tAdding column '{}' to current event", event.getColumnName());
+            event.getEntry().getNewValues().add(createColumnValue(event.getColumnName(), lobData));
+            return false;
+        }
+
+        if (RowMapper.INSERT == prevEvent.getOperation()) {
+            // Previous event is an INSERT operation.
+            // Only merge the SEL_LOB_LOCATOR event if the previous INSERT is for the same table/row
+            // and if the INSERT's column value is EMPTY_CLOB() or EMPTY_BLOB()
+            if (isForSameTableOrScn(event, prevEvent)) {
+                LOGGER.trace("\tMerging SEL_LOB_LOCATOR with previous INSERT event");
+                LogMinerColumnValue prevColumn = getColumnByName(prevEvent.getEntry().getNewValues(), event.getColumnName());
+                if (prevColumn == null || (!prevColumn.isEmptyClobFunction() && !prevColumn.isEmptyBlobFunction())) {
+                    throw new DebeziumException("Expected to find column '" + event.getColumnName() + "' in table '"
+                            + prevEvent.getTableId() + "' to be initialized as an empty LOB value.'");
+                }
+
+                prevColumn.setColumnData(lobData);
+
+                // Remove the SEL_LOB_LOCATOR event from event list and indicate merged.
+                transaction.events.remove(index);
+                return true;
+            }
+        }
+        else if (RowMapper.UPDATE == prevEvent.getOperation()) {
+            // Previous event is an UPDATE operation.
+            // Only merge the SEL_LOB_LOCATOR event if the previous UPDATE is for the same table/row
+            if (isForSameTableOrScn(event, prevEvent) && isSameTableRow(event, prevEvent)) {
+                LOGGER.trace("\tMerging SEL_LOB_LOCATOR with previous UPDATE event");
+                LogMinerColumnValue prevColumn = getColumnByName(prevEvent.getEntry().getNewValues(), event.getColumnName());
+                if (prevColumn == null) {
+                    LOGGER.trace("\tAdding SEL_LOB_LOCATOR column '{}' to previous UPDATE event", event.getColumnName());
+                    prevEvent.getEntry().getNewValues().add(createColumnValue(event.getColumnName(), lobData));
+                }
+                else {
+                    LOGGER.trace("\tMerging SEL_LOB_LOCATOR column '{}' to previous UPDATE event", event.getColumnName());
+                    prevColumn.setColumnData(lobData);
+                }
+
+                // Remove the SEL_LOB_LOCATOR event from event list and indicate merged.
+                transaction.events.remove(index);
+                return true;
+            }
+        }
+        else if (RowMapper.SELECT_LOB_LOCATOR == prevEvent.getOperation()) {
+            // Previous event is a SEL_LOB_LOCATOR operation.
+            // Only merge the two SEL_LOB_LOCATOR events if they're for the same table/row
+            if (isForSameTableOrScn(event, prevEvent) && isSameTableRow(event, prevEvent)) {
+                LOGGER.trace("\tAdding column '{}' to previous SEL_LOB_LOCATOR event", event.getColumnName());
+                prevEvent.getEntry().getNewValues().add(createColumnValue(event.getColumnName(), lobData));
+
+                // Remove the SEL_LOB_LOCATOR event from event list and indicate merged.
+                transaction.events.remove(index);
+                return true;
+            }
+        }
+        else {
+            throw new DebeziumException("Unexpected previous event operation: " + prevEvent.getOperation());
+        }
+
+        LOGGER.trace("\tSEL_LOB_LOCATOR event is for different row, merge skipped.");
+        LOGGER.trace("\tAdding column '{}' to current event", event.getColumnName());
+        event.getEntry().getNewValues().add(createColumnValue(event.getColumnName(), lobData));
+        return false;
+    }
+
+    /**
+     * Attempts to merge the provided DML event with the previous event in the transaction.
+     *
+     * @param transaction transaction being processed, never {@code null}
+     * @param index event index being processed
+     * @param event event being processed, never {@code null}
+     * @param prevEvent previous event in the transaction, can be {@ode null}
+     * @return true if the event is merged, false if the event was not merged
+     */
+    private boolean shouldMergeDmlEvent(Transaction transaction, int index, DmlEvent event, LogMinerEvent prevEvent) {
+        LOGGER.trace("\tDetected DmlEvent {}", event.getOperation());
+
+        if (prevEvent == null) {
+            // There is no prior event, therefore there is no reason to perform any merge.
+            return false;
+        }
+
+        if (RowMapper.INSERT == prevEvent.getOperation()) {
+            // Previous event is an INSERT operation.
+            // The only valid combination here would be if the current event is an UPDATE since an INSERT cannot
+            // be merged with a prior INSERT with how LogMiner materializes the rows.
+            if (RowMapper.UPDATE == event.getOperation()) {
+                if (isForSameTableOrScn(event, prevEvent) && isSameTableRow(event, prevEvent)) {
+                    LOGGER.trace("\tMerging UPDATE event with previous INSERT event");
+                    mergeNewColumns(event, prevEvent);
+
+                    // Remove the UPDATE event from event list and indicate merged.
+                    transaction.events.remove(index);
+                    return true;
+                }
+            }
+        }
+        else if (RowMapper.UPDATE == prevEvent.getOperation()) {
+            // Previous event is an UPDATE operation.
+            // This will happen if there are non-CLOB and inline-CLOB fields updated in the same SQL.
+            // The inline-CLOB values should be merged with the previous UPDATE event.
+            if (RowMapper.UPDATE == event.getOperation()) {
+                if (isForSameTableOrScn(event, prevEvent) && isSameTableRow(event, prevEvent)) {
+                    LOGGER.trace("\tMerging UPDATE event with previous UPDATE event");
+                    mergeNewColumns(event, prevEvent);
+
+                    // Remove the UPDATE event from event list and indicate merged.
+                    transaction.events.remove(index);
+                    return true;
+                }
+            }
+        }
+        else if (RowMapper.SELECT_LOB_LOCATOR == prevEvent.getOperation()) {
+            // Previous event is a SEL_LOB_LOCATOR operation.
+            // SQL contained both non-inline CLOB and inline-CLOB field changes.
+            if (RowMapper.UPDATE == event.getOperation()) {
+                if (isForSameTableOrScn(event, prevEvent) && isSameTableRow(event, prevEvent)) {
+                    LOGGER.trace("\tMerging UPDATE event with previous SEL_LOB_LOCATOR event");
+                    for (LogMinerColumnValue value : event.getEntry().getNewValues()) {
+                        boolean found = false;
+                        for (LogMinerColumnValue prevValue : prevEvent.getEntry().getNewValues()) {
+                            if (prevValue.getColumnName().equals(value.getColumnName())) {
+                                found = true;
+                                break;
+                            }
+                        }
+                        if (!found && value.getColumnData() != null) {
+                            LOGGER.trace("\tAdding column '{}' to previous SEL_LOB_LOCATOR event", value.getColumnName());
+                            prevEvent.getEntry().getNewValues().add(value);
+                        }
+                    }
+
+                    // Remove the UPDATE event from event list and indicate merged.
+                    transaction.events.remove(index);
+                    return true;
+                }
+            }
+        }
+
+        LOGGER.trace("\tDmlEvent {} event is for different row, merge skipped.", event.getOperation());
+        return false;
+    }
+
+    /**
+     * Reads the transaction event queue and combines all LOB_WRITE events starting at the provided index.
+     * for a SEL_LOB_LOCATOR event which is for binary data (BLOB) data types.
+     *
+     * @param transaction transaction being processed, never {@code null}
+     * @param index index to the first LOB_WRITE operation
+     * @return list of string-based values for each LOB_WRITE operation
+     */
+    private List<String> readAndCombineLobWriteEvents(Transaction transaction, int index, boolean binaryData) {
+        List<String> chunks = new ArrayList<>();
+        for (int i = index + 1; i < transaction.events.size(); ++i) {
+            final LogMinerEvent event = transaction.events.get(i);
+            if (!(event instanceof LobWriteEvent)) {
+                break;
+            }
+
+            final LobWriteEvent writeEvent = (LobWriteEvent) event;
+            if (binaryData && !writeEvent.getData().startsWith("HEXTORAW('") && !writeEvent.getData().endsWith("')")) {
+                throw new DebeziumException("Unexpected BLOB data chunk: " + writeEvent.getData());
+            }
+
+            chunks.add(writeEvent.getData());
+        }
+
+        if (!chunks.isEmpty()) {
+            LOGGER.trace("\tCombined {} LobWriteEvent events", chunks.size());
+            // Remove events from the transaction queue queue
+            for (int i = 0; i < chunks.size(); ++i) {
+                transaction.events.remove(index + 1);
+            }
+        }
+
+        return chunks;
+    }
+
+    /**
+     * Read and remove all LobErase events detected in the transaction event queue.
+     *
+     * @param transaction transaction being processed, never {@code null}
+     * @param index index to the first LOB_ERASE operation
+     * @return number of LOB_ERASE events consumed and removed from the event queue
+     */
+    private int readAndConsumeLobEraseEvents(Transaction transaction, int index) {
+        int events = 0;
+        for (int i = index + 1; i < transaction.events.size(); ++i) {
+            final LogMinerEvent event = transaction.events.get(i);
+            if (!(event instanceof LobEraseEvent)) {
+                break;
+            }
+            events++;
+        }
+
+        if (events > 0) {
+            LOGGER.trace("\tConsumed {} LobErase events", events);
+            for (int i = 0; i < events; ++i) {
+                transaction.events.remove(index + 1);
+            }
+        }
+
+        return events;
+    }
+
+    /**
+     * Utility method to create a {@link LogMinerColumnValue} from a provided column name nad value.
+     *
+     * @param columnName column name, never {@code null}
+     * @param columnValue column value, may be {@code null}
+     * @return the constructed {@link LogMinerColumnValue} instance
+     */
+    private LogMinerColumnValue createColumnValue(String columnName, Object columnValue) {
+        final LogMinerColumnValueImpl column = new LogMinerColumnValueImpl(columnName);
+        column.setColumnData(columnValue);
+        return column;
+    }
+
+    /**
+     * Checks whether the two events are for the same table or participate in the same system change.
+     *
+     * @param event current event being processed, never {@code null}
+     * @param prevEvent previous/parent event that has been processed, may be {@code null}
+     * @return true if the two events are for the same table or system change number, false otherwise
+     */
+    private boolean isForSameTableOrScn(LogMinerEvent event, LogMinerEvent prevEvent) {
+        if (prevEvent != null) {
+            if (event.getTableId().equals(prevEvent.getTableId())) {
+                return true;
+            }
+            return event.getScn().equals(prevEvent.getScn()) && event.getRsId().equals(prevEvent.getRsId());
+        }
+        return false;
+    }
+
+    /**
+     * Checks whether the two events are for the same table row.
+     *
+     * @param event current event being processed, never {@code null}
+     * @param prevEvent previous/parent event that has been processed, never {@code null}
+     * @return true if the two events are for the same table row, false otherwise
+     */
+    private boolean isSameTableRow(LogMinerEvent event, LogMinerEvent prevEvent) {
+        final Table table = schema.tableFor(event.getTableId());
+        if (table == null) {
+            LOGGER.trace("Unable to locate table '{}' schema, unable to detect if same row.", event.getTableId());
+            return false;
+        }
+        for (String columnName : table.primaryKeyColumnNames()) {
+            LogMinerColumnValue prevValue = getColumnByName(prevEvent.getEntry().getNewValues(), columnName);
+            if (prevValue == null) {
+                throw new DebeziumException("Could not find column " + columnName + " in previous event");
+            }
+            LogMinerColumnValue value = getColumnByName(event.getEntry().getNewValues(), columnName);
+            if (value == null) {
+                throw new DebeziumException("Could not find column " + columnName + " in event");
+            }
+            if (!Objects.equals(value.getColumnData(), prevValue.getColumnData())) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Merge {@link LogMinerColumnValue} instances from provided {@code event} with {@code prevEvent}.
+     *
+     * @param event current event being processed, never {@code null}
+     * @param prevEvent previous/parent parent that has been processed, never {@code null}
+     */
+    private void mergeNewColumns(LogMinerEvent event, LogMinerEvent prevEvent) {
+        final boolean prevEventIsInsert = RowMapper.INSERT == prevEvent.getOperation();
+
+        for (LogMinerColumnValue value : event.getEntry().getNewValues()) {
+            boolean found = false;
+            for (LogMinerColumnValue prevValue : prevEvent.getEntry().getNewValues()) {
+                if (prevValue.getColumnName().equals(value.getColumnName())) {
+                    if (prevEventIsInsert && prevValue.isEmptyClobFunction()) {
+                        LOGGER.trace("\tAssigning column '{}' with updated CLOB value.", prevValue.getColumnName());
+                        prevValue.setColumnData(value.getColumnData());
+                    }
+                    else if (prevEventIsInsert && prevValue.isEmptyBlobFunction()) {
+                        LOGGER.trace("\tAssigning column '{}' with updated BLOB value.", prevValue.getColumnName());
+                        prevValue.setColumnData(value.getColumnData());
+                    }
+                    else if (!prevEventIsInsert && value.getColumnData() != null) {
+                        LOGGER.trace("\tUpdating column '{}' in previous event", prevValue.getColumnName());
+                        prevValue.setColumnData(value.getColumnData());
+                    }
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                if (prevEventIsInsert) {
+                    // INSERTs as previous events should have a previous value of EMPTY_CLOB()
+                    // If they don't we should throw an exception for sanity sake
+                    throw new DebeziumException("Expected to find column '" + value.getColumnName() + "' with EMPTY_CLOB()");
+                }
+
+                // UPDATEs as previous events where we don't find the column will simply be added
+                prevEvent.getEntry().getNewValues().add(value);
+            }
+        }
+    }
+
+    /**
+     * Locate a {@link LogMinerColumnValue} in a collection by column name.
+     *
+     * @param columns collection of LogMiner column values
+     * @param columnName name of the column to find
+     * @return column value instance for the specified column name, may be {@code null} if no column with name exists
+     */
+    private static LogMinerColumnValue getColumnByName(List<LogMinerColumnValue> columns, String columnName) {
+        return columns.stream().filter(c -> c.getColumnName().equals(columnName)).findFirst().orElse(null);
+    }
+
+    /**
+     * Represents a transaction boundary that was recently committed.
+     *
+     * This is used by the buffer to detect transactions read from overlapping mining sessions that can
+     * safely be ignored as the connector has already reconciled and emitted the event for it.
+     */
+    private static final class RecentlyCommittedTransaction {
+        private final String transactionId;
+        private final Scn firstScn;
+        private final Scn commitScn;
+
+        public RecentlyCommittedTransaction(Transaction transaction, Scn commitScn) {
+            this.transactionId = transaction.transactionId;
+            this.firstScn = transaction.firstScn;
+            this.commitScn = commitScn;
+        }
+
+        public Scn getFirstScn() {
+            return firstScn;
+        }
+
+        public Scn getCommitScn() {
+            return commitScn;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) {
+                return true;
+            }
+            if (o == null || getClass() != o.getClass()) {
+                return false;
+            }
+            RecentlyCommittedTransaction that = (RecentlyCommittedTransaction) o;
+            return Objects.equals(transactionId, that.transactionId) &&
+                    Objects.equals(firstScn, that.firstScn) &&
+                    Objects.equals(commitScn, that.commitScn);
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(transactionId, firstScn, commitScn);
         }
     }
 
@@ -337,12 +962,14 @@ private static final class Transaction {
         private final String transactionId;
         private final Scn firstScn;
         private Scn lastScn;
-        private final List<DmlEvent> events;
+        private final Set<Long> eventHashes;
+        private final List<LogMinerEvent> events;
 
         private Transaction(String transactionId, Scn firstScn) {
             this.transactionId = transactionId;
             this.firstScn = firstScn;
             this.events = new ArrayList<>();
+            this.eventHashes = new HashSet<>();
             this.lastScn = firstScn;
         }
 
@@ -357,20 +984,22 @@ public String toString() {
     }
 
     /**
-     * Represents a DML event for a given table row.
+     * Base class for all possible LogMiner events
      */
-    private static class DmlEvent {
+    private static class LogMinerEvent {
         private final int operation;
         private final LogMinerDmlEntry entry;
         private final Scn scn;
         private final TableId tableId;
         private final String rowId;
+        private final Object rsId;
 
-        public DmlEvent(int operation, LogMinerDmlEntry entry, Scn scn, TableId tableId, String rowId) {
+        public LogMinerEvent(int operation, LogMinerDmlEntry entry, Scn scn, TableId tableId, String rowId, Object rsId) {
             this.operation = operation;
             this.scn = scn;
             this.tableId = tableId;
             this.rowId = rowId;
+            this.rsId = rsId;
             this.entry = entry;
         }
 
@@ -394,6 +1023,10 @@ public String getRowId() {
             return rowId;
         }
 
+        public Object getRsId() {
+            return rsId;
+        }
+
         @Override
         public boolean equals(Object o) {
             if (this == o) {
@@ -402,17 +1035,76 @@ public boolean equals(Object o) {
             if (o == null || getClass() != o.getClass()) {
                 return false;
             }
-            DmlEvent dmlEvent = (DmlEvent) o;
-            return operation == dmlEvent.operation &&
-                    Objects.equals(entry, dmlEvent.entry) &&
-                    Objects.equals(scn, dmlEvent.scn) &&
-                    Objects.equals(tableId, dmlEvent.tableId) &&
-                    Objects.equals(rowId, dmlEvent.rowId);
+            LogMinerEvent event = (LogMinerEvent) o;
+            return operation == event.operation &&
+                    Objects.equals(entry, event.entry) &&
+                    Objects.equals(scn, event.scn) &&
+                    Objects.equals(tableId, event.tableId) &&
+                    Objects.equals(rowId, event.rowId) &&
+                    Objects.equals(rsId, event.rsId);
         }
 
         @Override
         public int hashCode() {
-            return Objects.hash(operation, entry, scn, tableId, rowId);
+            return Objects.hash(operation, entry, scn, tableId, rowId, rsId);
         }
     }
+
+    /**
+     * Represents a DML event for a given table row.
+     */
+    private static class DmlEvent extends LogMinerEvent {
+        public DmlEvent(int operation, LogMinerDmlEntry entry, Scn scn, TableId tableId, String rowId, Object rsId) {
+            super(operation, entry, scn, tableId, rowId, rsId);
+        }
+    }
+
+    /**
+     * Represents a SELECT_LOB_LOCATOR event
+     */
+    private static class SelectLobLocatorEvent extends LogMinerEvent {
+        private final String columnName;
+        private final boolean binaryData;
+
+        public SelectLobLocatorEvent(int operation, LogMinerDmlEntry entry, String columnName, boolean binaryData, Scn scn,
+                                     TableId tableId, String rowId, Object rsId) {
+            super(operation, entry, scn, tableId, rowId, rsId);
+            this.columnName = columnName;
+            this.binaryData = binaryData;
+        }
+
+        public String getColumnName() {
+            return columnName;
+        }
+
+        public boolean isBinaryData() {
+            return binaryData;
+        }
+    }
+
+    /**
+     * Represents a LOB_WRITE event
+     */
+    private static class LobWriteEvent extends LogMinerEvent {
+        private final String data;
+
+        public LobWriteEvent(int operation, String data, Scn scn, TableId tableId, String rowId, Object rsId) {
+            super(operation, null, scn, tableId, rowId, rsId);
+            this.data = data;
+        }
+
+        public String getData() {
+            return data;
+        }
+    }
+
+    /**
+     * Represents a LOB_ERASE event
+     */
+    private static class LobEraseEvent extends LogMinerEvent {
+        public LobEraseEvent(int operation, Scn scn, TableId tableId, String rowId, Object rsId) {
+            super(operation, null, scn, tableId, rowId, rsId);
+        }
+    }
+
 }

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/parser/LogMinerDmlParser.java

@@ -12,11 +12,11 @@
 import java.util.Map;
 
 import io.debezium.DebeziumException;
+import io.debezium.connector.oracle.logminer.RowMapper;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValue;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValueImpl;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntryImpl;
-import io.debezium.data.Envelope;
 import io.debezium.relational.Table;
 
 /**
@@ -126,7 +126,7 @@ private LogMinerDmlEntry parseInsert(String sql, Table table) {
                 newValues.add(createColumnValue(columnName, columnValue));
             }
 
-            return new LogMinerDmlEntryImpl(Envelope.Operation.CREATE, newValues, Collections.emptyList());
+            return new LogMinerDmlEntryImpl(RowMapper.INSERT, newValues, Collections.emptyList());
         }
         catch (Exception e) {
             throw new DmlParserException("Failed to parse insert DML: '" + sql + "'", e);
@@ -190,12 +190,12 @@ private LogMinerDmlEntry parseUpdate(String sql, Table table) {
                 for (int i = 0; i < table.columns().size(); ++i) {
                     String columnName = table.columns().get(i).name();
                     if (afterColumnMap.containsKey(columnName)) {
-                        LogMinerColumnValue value = new LogMinerColumnValueImpl(columnName, 0);
+                        LogMinerColumnValue value = new LogMinerColumnValueImpl(columnName);
                         value.setColumnData(afterColumnMap.get(columnName));
                         newValues.add(value);
                     }
                     else {
-                        LogMinerColumnValue value = new LogMinerColumnValueImpl(columnName, 0);
+                        LogMinerColumnValue value = new LogMinerColumnValueImpl(columnName);
                         value.setColumnData(beforeColumnMap.get(columnName));
                         newValues.add(value);
                     }
@@ -205,7 +205,7 @@ private LogMinerDmlEntry parseUpdate(String sql, Table table) {
                 newValues = Collections.emptyList();
             }
 
-            return new LogMinerDmlEntryImpl(Envelope.Operation.UPDATE, newValues, oldValues);
+            return new LogMinerDmlEntryImpl(RowMapper.UPDATE, newValues, oldValues);
         }
         catch (Exception e) {
             throw new DmlParserException("Failed to parse update DML: '" + sql + "'", e);
@@ -247,7 +247,7 @@ private LogMinerDmlEntry parseDelete(String sql, Table table) {
                 oldValues = Collections.emptyList();
             }
 
-            return new LogMinerDmlEntryImpl(Envelope.Operation.DELETE, Collections.emptyList(), oldValues);
+            return new LogMinerDmlEntryImpl(RowMapper.DELETE, Collections.emptyList(), oldValues);
         }
         catch (Exception e) {
             throw new DmlParserException("Failed to parse delete DML: '" + sql + "'", e);
@@ -639,7 +639,7 @@ private static String removeSingleQuotes(String text) {
      * @return the LogMiner column value object
      */
     private static LogMinerColumnValue createColumnValue(String columnName, String columnValue) {
-        LogMinerColumnValue value = new LogMinerColumnValueImpl(columnName, 0);
+        LogMinerColumnValue value = new LogMinerColumnValueImpl(columnName);
         if (columnValue != null && !columnValue.equals(NULL)) {
             value.setColumnData(columnValue);
         }

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/parser/SelectLobParser.java

@@ -0,0 +1,193 @@
+/*
+ * Copyright Debezium Authors.
+ *
+ * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
+ */
+package io.debezium.connector.oracle.logminer.parser;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+
+import io.debezium.annotation.NotThreadSafe;
+import io.debezium.connector.oracle.logminer.RowMapper;
+import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValue;
+import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValueImpl;
+import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
+import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntryImpl;
+
+/**
+ * Simple text-based parser implementation for Oracle LogMiner SEL_LOB_LOCATOR Redo SQL.
+ *
+ * @author Chris Cranford
+ */
+@NotThreadSafe
+public class SelectLobParser {
+
+    private static final String BEGIN = "BEGIN";
+    private static final String SELECT = "select";
+    private static final String FROM = "from";
+    private static final String WHERE = "where";
+    private static final String AND = "and";
+    private static final String OR = "or";
+    private static final String FOR_UPDATE = "for update";
+    private static final String BLOB_LOCATOR = "loc_b";
+    private static final String BLOB_BUFFER = "buf_b";
+
+    private String columnName;
+    private String schemaName;
+    private String tableName;
+    private boolean binary;
+    private List<LogMinerColumnValue> columns;
+
+    /**
+     * Parse the supplied SEL_LOB_LOCATOR event redo SQL statement.
+     *
+     * @param sql SQL statement expression to be parsed
+     * @return instance of {@link LogMinerDmlEntry} for the parsed fragment.
+     */
+    public LogMinerDmlEntry parse(String sql) {
+        // Reset internal state
+        reset();
+
+        if (sql != null) {
+            int start = sql.indexOf(BEGIN);
+            if (start != -1) {
+                start = sql.indexOf(" ", start + 1) + 1;
+                if (sql.indexOf(SELECT, start) == start) {
+                    start = sql.indexOf(" ", start) + 1;
+                    start = parseQuotedValue(sql, start, s -> columnName = s);
+                    start = sql.indexOf(" ", start) + 1; // skip leading space
+                    start = sql.indexOf(" ", start) + 1; // skip into
+                    if (sql.indexOf(BLOB_LOCATOR, start) == start || sql.indexOf(BLOB_BUFFER, start) == start) {
+                        binary = true;
+                    }
+                    start = sql.indexOf(" ", start) + 1; // skip loc_xxxx variable name
+                    if (sql.indexOf(FROM, start) == start) {
+                        start = sql.indexOf(" ", start) + 1;
+                        start = parseQuotedValue(sql, start, s -> schemaName = s);
+                        if (sql.indexOf('.', start) == start) {
+                            start += 1; // dot
+                            start = parseQuotedValue(sql, start, s -> tableName = s);
+                            start += 1; // space
+                            if (sql.indexOf(WHERE, start) == start) {
+                                start += WHERE.length() + 1;
+                                parseWhere(sql, start);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        LogMinerDmlEntryImpl entry = new LogMinerDmlEntryImpl(RowMapper.SELECT_LOB_LOCATOR, new ArrayList<>(columns), columns);
+        entry.setObjectOwner(schemaName);
+        entry.setObjectName(tableName);
+        return entry;
+    }
+
+    /**
+     * @return the column name that the SEL_LOB_LOCATOR event is modifying
+     */
+    public String getColumnName() {
+        return columnName;
+    }
+
+    /**
+     * @return true if the column being modified is a BLOB; otherwise false indicates a CLOB data type.
+     */
+    public boolean isBinary() {
+        return binary;
+    }
+
+    private int parseQuotedValue(String sql, int index, Consumer<String> collector) {
+        boolean inDoubleQuotes = false;
+        int start = -1, last = -1;
+        for (int i = index; i < sql.length(); ++i) {
+            if (sql.charAt(i) == '"') {
+                if (!inDoubleQuotes) {
+                    inDoubleQuotes = true;
+                    start = i + 1;
+                }
+                else {
+                    inDoubleQuotes = false;
+                    last = i;
+                    index = i + 1;
+                    break;
+                }
+            }
+        }
+
+        if (start != -1 && last != -1) {
+            collector.accept(sql.substring(start, last));
+        }
+
+        return index;
+    }
+
+    private int parseColumnValue(String sql, int index, Consumer<String> collector) {
+        boolean inSingleQuotes = false;
+        int start = -1, last = -1;
+        for (int i = index; i < sql.length(); ++i) {
+            char c = sql.charAt(i);
+            char lookAhead = (index + 1 < sql.length()) ? sql.charAt(i + 1) : 0;
+            if (c == '\'') {
+                // skip over double single quote
+                if (inSingleQuotes && lookAhead == '\'') {
+                    index += 1;
+                    continue;
+                }
+                if (inSingleQuotes) {
+                    inSingleQuotes = false;
+                    last = i;
+                    index = i + 1;
+                    break;
+                }
+                inSingleQuotes = true;
+                start = i + 1;
+            }
+        }
+
+        if (start != -1 && last != -1) {
+            collector.accept(sql.substring(start, last));
+        }
+
+        return index;
+    }
+
+    private int parseWhere(String sql, int index) {
+        for (int i = index; i < sql.length(); ++i) {
+            // parse column name
+            StringBuilder columnName = new StringBuilder();
+            index = parseQuotedValue(sql, index, columnName::append);
+            index += 3; // space, equals, space
+            final LogMinerColumnValueImpl column = new LogMinerColumnValueImpl(columnName.toString());
+            index = parseColumnValue(sql, index, column::setColumnData);
+            index += 1; // space
+            columns.add(column);
+
+            if (sql.indexOf(AND, index) == index) {
+                // 'and' detected
+                index += AND.length() + 1;
+            }
+            else if (sql.indexOf(OR, index) == index) {
+                // 'or' detecteed
+                index += OR.length() + 1;
+            }
+            else if (sql.indexOf(FOR_UPDATE, index) == index) {
+                // 'for update' detected
+                // this signifies the end of the where clause
+                break;
+            }
+        }
+        return index;
+    }
+
+    private void reset() {
+        columnName = null;
+        schemaName = null;
+        tableName = null;
+        binary = false;
+        columns = new ArrayList<>();
+    }
+}

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/parser/SimpleDmlParser.java

@@ -17,12 +17,12 @@
 
 import io.debezium.connector.oracle.OracleValueConverters;
 import io.debezium.connector.oracle.antlr.listener.ParserUtils;
+import io.debezium.connector.oracle.logminer.RowMapper;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValue;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValueImpl;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValueWrapper;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntryImpl;
-import io.debezium.data.Envelope;
 import io.debezium.relational.Column;
 import io.debezium.relational.Table;
 import io.debezium.text.ParsingException;
@@ -104,21 +104,21 @@ public LogMinerDmlEntry parse(String dmlContent, Table table, String txId) {
                         .filter(LogMinerColumnValueWrapper::isProcessed).map(LogMinerColumnValueWrapper::getColumnValue).collect(Collectors.toList());
                 List<LogMinerColumnValue> actualOldValues = oldColumnValues.values().stream()
                         .filter(LogMinerColumnValueWrapper::isProcessed).map(LogMinerColumnValueWrapper::getColumnValue).collect(Collectors.toList());
-                return new LogMinerDmlEntryImpl(Envelope.Operation.UPDATE, actualNewValues, actualOldValues);
+                return new LogMinerDmlEntryImpl(RowMapper.UPDATE, actualNewValues, actualOldValues);
 
             }
             else if (st instanceof Insert) {
                 parseInsert(table, (Insert) st);
                 List<LogMinerColumnValue> actualNewValues = newColumnValues.values()
                         .stream().map(LogMinerColumnValueWrapper::getColumnValue).collect(Collectors.toList());
-                return new LogMinerDmlEntryImpl(Envelope.Operation.CREATE, actualNewValues, Collections.emptyList());
+                return new LogMinerDmlEntryImpl(RowMapper.INSERT, actualNewValues, Collections.emptyList());
 
             }
             else if (st instanceof Delete) {
                 parseDelete(table, (Delete) st);
                 List<LogMinerColumnValue> actualOldValues = oldColumnValues.values()
                         .stream().map(LogMinerColumnValueWrapper::getColumnValue).collect(Collectors.toList());
-                return new LogMinerDmlEntryImpl(Envelope.Operation.DELETE, Collections.emptyList(), actualOldValues);
+                return new LogMinerDmlEntryImpl(RowMapper.DELETE, Collections.emptyList(), actualOldValues);
 
             }
             else {
@@ -137,11 +137,10 @@ private void initColumns(Table table, String tableName) {
         this.table = table;
         for (int i = 0; i < table.columns().size(); i++) {
             Column column = table.columns().get(i);
-            int type = column.jdbcType();
             String key = column.name();
             String name = ParserUtils.stripeQuotes(column.name().toUpperCase());
-            newColumnValues.put(key, new LogMinerColumnValueWrapper(new LogMinerColumnValueImpl(name, type)));
-            oldColumnValues.put(key, new LogMinerColumnValueWrapper(new LogMinerColumnValueImpl(name, type)));
+            newColumnValues.put(key, new LogMinerColumnValueWrapper(new LogMinerColumnValueImpl(name)));
+            oldColumnValues.put(key, new LogMinerColumnValueWrapper(new LogMinerColumnValueImpl(name)));
         }
     }
 

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/valueholder/LogMinerColumnValue.java

@@ -18,6 +18,16 @@ public interface LogMinerColumnValue {
      */
     String getColumnName();
 
+    /**
+     * @return {@code true} if the column value is an empty clob function call, otherwise {@code false}.
+     */
+    boolean isEmptyClobFunction();
+
+    /**
+     * @return {@code true} if the column value is an empty blob function call, otherwise {@code false}.
+     */
+    boolean isEmptyBlobFunction();
+
     /**
      * This sets the database record value with the exception of LOBs
      * @param columnData data

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/valueholder/LogMinerColumnValueImpl.java

@@ -15,13 +15,14 @@
  */
 public class LogMinerColumnValueImpl implements LogMinerColumnValue {
 
+    private static final String EMPTY_CLOB_FUNCTION = "EMPTY_CLOB()";
+    private static final String EMPTY_BLOB_FUNCTION = "EMPTY_BLOB()";
+
     private String columnName;
     private Object columnData;
-    private int columnType;
 
-    public LogMinerColumnValueImpl(String columnName, int columnType) {
+    public LogMinerColumnValueImpl(String columnName) {
         this.columnName = columnName;
-        this.columnType = columnType;
     }
 
     @Override
@@ -44,6 +45,20 @@ public void setColumnData(Object columnData) {
         }
     }
 
+    @Override
+    public boolean isEmptyClobFunction() {
+        return EMPTY_CLOB_FUNCTION.equals(columnData);
+    }
+
+    @Override
+    public boolean isEmptyBlobFunction() {
+        return EMPTY_BLOB_FUNCTION.equals(columnData);
+    }
+
+    public void setColumnName(String columnName) {
+        this.columnName = columnName;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) {
@@ -53,13 +68,17 @@ public boolean equals(Object o) {
             return false;
         }
         LogMinerColumnValueImpl that = (LogMinerColumnValueImpl) o;
-        return columnType == that.columnType &&
-                Objects.equals(columnName, that.columnName) &&
+        return Objects.equals(columnName, that.columnName) &&
                 Objects.equals(columnData, that.columnData);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(columnName, columnData, columnType);
+        return Objects.hash(columnName, columnData);
+    }
+
+    @Override
+    public String toString() {
+        return "LogMinerColumnValueImpl{columnName=" + columnName + ", columnData=" + columnData + "}";
     }
 }

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/valueholder/LogMinerDmlEntry.java

@@ -9,7 +9,6 @@
 import java.util.List;
 
 import io.debezium.connector.oracle.Scn;
-import io.debezium.data.Envelope;
 
 public interface LogMinerDmlEntry {
     /**
@@ -27,10 +26,9 @@ public interface LogMinerDmlEntry {
     List<LogMinerColumnValue> getNewValues();
 
     /**
-     * this getter
-     * @return Envelope.Operation enum
+     * @return LogMiner event operation type
      */
-    Envelope.Operation getCommandType();
+    int getOperation();
 
     /**
      * the scn obtained from a LogMiner entry.
@@ -65,6 +63,11 @@ public interface LogMinerDmlEntry {
      */
     String getRowId();
 
+    /**
+     * @return the sequence
+     */
+    int getSequence();
+
     /**
      * sets scn obtained from a LogMiner entry
      * @param scn it's value
@@ -98,4 +101,9 @@ public interface LogMinerDmlEntry {
      * @param rowId unique row identifier
      */
     void setRowId(String rowId);
+
+    /**
+     * @param sequence operation sequence
+     */
+    void setSequence(int sequence);
 }

debezium-connector-oracle/src/main/java/io/debezium/connector/oracle/logminer/valueholder/LogMinerDmlEntryImpl.java

@@ -10,7 +10,6 @@
 import java.util.Objects;
 
 import io.debezium.connector.oracle.Scn;
-import io.debezium.data.Envelope;
 
 /**
  * This class holds one parsed DML LogMiner record details
@@ -18,25 +17,26 @@
  */
 public class LogMinerDmlEntryImpl implements LogMinerDmlEntry {
 
-    private Envelope.Operation commandType;
-    private List<LogMinerColumnValue> newLmColumnValues;
-    private List<LogMinerColumnValue> oldLmColumnValues;
+    private final int operation;
+    private final List<LogMinerColumnValue> newLmColumnValues;
+    private final List<LogMinerColumnValue> oldLmColumnValues;
     private String objectOwner;
     private String objectName;
     private Timestamp sourceTime;
     private String transactionId;
     private Scn scn;
     private String rowId;
+    private int sequence;
 
-    public LogMinerDmlEntryImpl(Envelope.Operation commandType, List<LogMinerColumnValue> newLmColumnValues, List<LogMinerColumnValue> oldLmColumnValues) {
-        this.commandType = commandType;
+    public LogMinerDmlEntryImpl(int operation, List<LogMinerColumnValue> newLmColumnValues, List<LogMinerColumnValue> oldLmColumnValues) {
+        this.operation = operation;
         this.newLmColumnValues = newLmColumnValues;
         this.oldLmColumnValues = oldLmColumnValues;
     }
 
     @Override
-    public Envelope.Operation getCommandType() {
-        return commandType;
+    public int getOperation() {
+        return operation;
     }
 
     @Override
@@ -74,6 +74,11 @@ public String getRowId() {
         return rowId;
     }
 
+    @Override
+    public int getSequence() {
+        return sequence;
+    }
+
     @Override
     public void setObjectName(String name) {
         this.objectName = name;
@@ -109,6 +114,11 @@ public void setRowId(String rowId) {
         this.rowId = rowId;
     }
 
+    @Override
+    public void setSequence(int sequence) {
+        this.sequence = sequence;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) {
@@ -118,13 +128,18 @@ public boolean equals(Object o) {
             return false;
         }
         LogMinerDmlEntryImpl that = (LogMinerDmlEntryImpl) o;
-        return commandType == that.commandType &&
+        return operation == that.operation &&
                 Objects.equals(newLmColumnValues, that.newLmColumnValues) &&
                 Objects.equals(oldLmColumnValues, that.oldLmColumnValues);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(commandType, newLmColumnValues, oldLmColumnValues);
+        return Objects.hash(operation, newLmColumnValues, oldLmColumnValues);
+    }
+
+    @Override
+    public String toString() {
+        return "{LogMinerDmlEntryImpl={operation=" + operation + ",newColumns=" + newLmColumnValues + ",oldColumns=" + oldLmColumnValues + "}";
     }
 }

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/AbstractOracleDatatypesTest.java

@@ -8,6 +8,8 @@
 import static org.fest.assertions.Assertions.assertThat;
 
 import java.math.BigDecimal;
+import java.sql.Clob;
+import java.sql.NClob;
 import java.sql.SQLException;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
@@ -22,10 +24,14 @@
 import org.apache.kafka.connect.source.SourceRecord;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.TestRule;
 
 import io.debezium.config.Configuration;
 import io.debezium.config.Configuration.Builder;
+import io.debezium.connector.oracle.junit.SkipTestDependingOnAdapterNameRule;
+import io.debezium.connector.oracle.junit.SkipWhenAdapterNameIs;
 import io.debezium.connector.oracle.util.TestHelper;
 import io.debezium.data.SchemaAndValueField;
 import io.debezium.data.VariableScaleDecimal;
@@ -115,6 +121,17 @@ public abstract class AbstractOracleDatatypesTest extends AbstractConnectorTest
             "  primary key (id)" +
             ")";
 
+    private static final String DDL_CLOB = "create table debezium.type_clob (" +
+            "  id numeric(9,0) not null, " +
+            "  val_clob_inline clob, " +
+            "  val_nclob_inline nclob, " +
+            "  val_clob_short clob, " +
+            "  val_nclob_short nclob, " +
+            "  val_clob_long clob, " +
+            "  val_nclob_long nclob, " +
+            "  primary key (id)" +
+            ")";
+
     private static final List<SchemaAndValueField> EXPECTED_STRING = Arrays.asList(
             new SchemaAndValueField("VAL_VARCHAR", Schema.OPTIONAL_STRING_SCHEMA, "v\u010d2"),
             new SchemaAndValueField("VAL_VARCHAR2", Schema.OPTIONAL_STRING_SCHEMA, "v\u010d2"),
@@ -216,20 +233,44 @@ public abstract class AbstractOracleDatatypesTest extends AbstractConnectorTest
             new SchemaAndValueField("VAL_INT_YTM", MicroDuration.builder().optional().build(), -110451600_000_000L),
             new SchemaAndValueField("VAL_INT_DTS", MicroDuration.builder().optional().build(), -93784_560_000L));
 
+    private static final String CLOB_JSON = Testing.Files.readResourceAsString("data/test_clob_data.json");
+    private static final String NCLOB_JSON = Testing.Files.readResourceAsString("data/test_clob_data2.json");
+
+    private static final List<SchemaAndValueField> EXPECTED_CLOB = Arrays.asList(
+            new SchemaAndValueField("VAL_CLOB_INLINE", Schema.OPTIONAL_STRING_SCHEMA, "TestClob123"),
+            new SchemaAndValueField("VAL_NCLOB_INLINE", Schema.OPTIONAL_STRING_SCHEMA, "TestNClob123"),
+            new SchemaAndValueField("VAL_CLOB_SHORT", Schema.OPTIONAL_STRING_SCHEMA, part(CLOB_JSON, 0, 512)),
+            new SchemaAndValueField("VAL_NCLOB_SHORT", Schema.OPTIONAL_STRING_SCHEMA, part(NCLOB_JSON, 0, 512)),
+            new SchemaAndValueField("VAL_CLOB_LONG", Schema.OPTIONAL_STRING_SCHEMA, part(CLOB_JSON, 0, 5000)),
+            new SchemaAndValueField("VAL_NCLOB_LONG", Schema.OPTIONAL_STRING_SCHEMA, part(NCLOB_JSON, 0, 5000)));
+
+    private static final List<SchemaAndValueField> EXPECTED_CLOB_UPDATE = Arrays.asList(
+            new SchemaAndValueField("VAL_CLOB_INLINE", Schema.OPTIONAL_STRING_SCHEMA, "TestClob123Update"),
+            new SchemaAndValueField("VAL_NCLOB_INLINE", Schema.OPTIONAL_STRING_SCHEMA, "TestNClob123Update"),
+            new SchemaAndValueField("VAL_CLOB_SHORT", Schema.OPTIONAL_STRING_SCHEMA, part(CLOB_JSON, 1, 512)),
+            new SchemaAndValueField("VAL_NCLOB_SHORT", Schema.OPTIONAL_STRING_SCHEMA, part(NCLOB_JSON, 1, 512)),
+            new SchemaAndValueField("VAL_CLOB_LONG", Schema.OPTIONAL_STRING_SCHEMA, part(CLOB_JSON, 1, 5000)),
+            new SchemaAndValueField("VAL_NCLOB_LONG", Schema.OPTIONAL_STRING_SCHEMA, part(NCLOB_JSON, 1, 5000)));
+
     private static final String[] ALL_TABLES = {
             "debezium.type_string",
             "debezium.type_fp",
             "debezium.type_int",
-            "debezium.type_time"
+            "debezium.type_time",
+            "debezium.type_clob"
     };
 
     private static final String[] ALL_DDLS = {
             DDL_STRING,
             DDL_FP,
             DDL_INT,
-            DDL_TIME
+            DDL_TIME,
+            DDL_CLOB
     };
 
+    @Rule
+    public final TestRule skipAdapterRule = new SkipTestDependingOnAdapterNameRule();
+
     private static OracleConnection connection;
 
     @BeforeClass
@@ -551,6 +592,54 @@ public void timeTypesAsConnect() throws Exception {
         assertRecord(after, EXPECTED_TIME_AS_CONNECT);
     }
 
+    @Test
+    @SkipWhenAdapterNameIs(value = SkipWhenAdapterNameIs.AdapterName.XSTREAM, reason = "XStream doesn't yet support CLOB data types")
+    public void clobTypes() throws Exception {
+        int expectedRecordCount = 0;
+
+        if (insertRecordsDuringTest()) {
+            insertClobTypes();
+        }
+
+        Testing.debug("Inserted");
+        expectedRecordCount++;
+
+        SourceRecords records = consumeRecordsByTopic(expectedRecordCount);
+
+        List<SourceRecord> testTableRecords = records.recordsForTopic("server1.DEBEZIUM.TYPE_CLOB");
+        assertThat(testTableRecords).hasSize(expectedRecordCount);
+        SourceRecord record = testTableRecords.get(0);
+
+        VerifyRecord.isValid(record);
+
+        // insert
+        if (insertRecordsDuringTest()) {
+            VerifyRecord.isValidInsert(record, "ID", 1);
+        }
+        else {
+            VerifyRecord.isValidRead(record, "ID", 1);
+        }
+
+        Struct after = (Struct) ((Struct) record.value()).get("after");
+        assertRecord(after, EXPECTED_CLOB);
+
+        if (insertRecordsDuringTest()) {
+            // Update clob types
+            updateClobTypes();
+
+            records = consumeRecordsByTopic(1);
+            testTableRecords = records.recordsForTopic("server1.DEBEZIUM.TYPE_CLOB");
+            assertThat(testTableRecords).hasSize(1);
+            record = testTableRecords.get(0);
+
+            VerifyRecord.isValid(record);
+            VerifyRecord.isValidUpdate(record, "ID", 1);
+
+            after = (Struct) ((Struct) record.value()).get("after");
+            assertRecord(after, EXPECTED_CLOB_UPDATE);
+        }
+    }
+
     protected static void insertStringTypes() throws SQLException {
         connection.execute("INSERT INTO debezium.type_string VALUES (1, 'v\u010d2', 'v\u010d2', 'nv\u010d2', 'c', 'n\u010d')");
         connection.execute("COMMIT");
@@ -583,6 +672,59 @@ protected static void insertTimeTypes() throws SQLException {
         connection.execute("COMMIT");
     }
 
+    protected static void insertClobTypes() throws SQLException {
+        Clob clob1 = connection.connection().createClob();
+        clob1.setString(1, part(CLOB_JSON, 0, 512));
+
+        Clob clob2 = connection.connection().createClob();
+        clob2.setString(1, part(CLOB_JSON, 0, 5000));
+
+        NClob nclob1 = connection.connection().createNClob();
+        nclob1.setString(1, part(NCLOB_JSON, 0, 512));
+
+        NClob nclob2 = connection.connection().createNClob();
+        nclob2.setString(1, part(NCLOB_JSON, 0, 5000));
+
+        connection.prepareQuery("INSERT INTO debezium.type_clob VALUES (1, ?, ?, ?, ?, ?, ?)", ps -> {
+            ps.setString(1, "TestClob123");
+            ps.setString(2, "TestNClob123");
+            ps.setClob(3, clob1);
+            ps.setNClob(4, nclob1);
+            ps.setClob(5, clob2);
+            ps.setNClob(6, nclob2);
+        }, null);
+        connection.commit();
+    }
+
+    protected static void updateClobTypes() throws Exception {
+        Clob clob1 = connection.connection().createClob();
+        clob1.setString(1, part(CLOB_JSON, 1, 512));
+
+        Clob clob2 = connection.connection().createClob();
+        clob2.setString(1, part(CLOB_JSON, 1, 5000));
+
+        NClob nclob1 = connection.connection().createNClob();
+        nclob1.setString(1, part(NCLOB_JSON, 1, 512));
+
+        NClob nclob2 = connection.connection().createNClob();
+        nclob2.setString(1, part(NCLOB_JSON, 1, 5000));
+
+        connection.prepareQuery("UPDATE debezium.type_clob SET VAL_CLOB_INLINE=?, VAL_NCLOB_INLINE=?, VAL_CLOB_SHORT=?, "
+                + "VAL_NCLOB_SHORT=?, VAL_CLOB_LONG=?, VAL_NCLOB_LONG=? WHERE ID = 1", ps -> {
+                    ps.setString(1, "TestClob123Update");
+                    ps.setString(2, "TestNClob123Update");
+                    ps.setClob(3, clob1);
+                    ps.setNClob(4, nclob1);
+                    ps.setClob(5, clob2);
+                    ps.setNClob(6, nclob2);
+                }, null);
+        connection.commit();
+    }
+
+    private static String part(String text, int start, int length) {
+        return text == null ? "" : text.substring(start, Math.min(length, text.length()));
+    }
+
     private void assertRecord(Struct record, List<SchemaAndValueField> expected) {
         expected.forEach(schemaAndValueField -> schemaAndValueField.assertFor(record));
     }

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/OracleBlobDataTypesIT.java

@@ -0,0 +1,1039 @@
+/*
+ * Copyright Debezium Authors.
+ *
+ * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
+ */
+package io.debezium.connector.oracle;
+
+import static org.fest.assertions.Assertions.assertThat;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.sql.Blob;
+import java.sql.SQLException;
+import java.time.Duration;
+import java.util.Arrays;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.kafka.connect.data.Struct;
+import org.apache.kafka.connect.source.SourceRecord;
+import org.awaitility.Awaitility;
+import org.fest.assertions.Fail;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TestRule;
+
+import io.debezium.config.Configuration;
+import io.debezium.connector.oracle.junit.SkipTestDependingOnAdapterNameRule;
+import io.debezium.connector.oracle.junit.SkipWhenAdapterNameIs;
+import io.debezium.connector.oracle.util.TestHelper;
+import io.debezium.data.Envelope;
+import io.debezium.data.VerifyRecord;
+import io.debezium.doc.FixFor;
+import io.debezium.embedded.AbstractConnectorTest;
+import io.debezium.junit.logging.LogInterceptor;
+import io.debezium.util.IoUtil;
+import io.debezium.util.Testing;
+
+/**
+ * Integration tests for BLOB data type support.
+ *
+ * @author Chris Cranford
+ */
+@SkipWhenAdapterNameIs(value = SkipWhenAdapterNameIs.AdapterName.XSTREAM, reason = "XStream does not yet support BLOB data types")
+public class OracleBlobDataTypesIT extends AbstractConnectorTest {
+
+    private static final byte[] BIN_DATA = readBinaryData("data/test_lob_data.json");
+
+    @Rule
+    public final TestRule skipAdapterRule = new SkipTestDependingOnAdapterNameRule();
+
+    private OracleConnection connection;
+
+    @Before
+    public void before() {
+        connection = TestHelper.testConnection();
+        TestHelper.dropTable(connection, "BLOB_TEST");
+
+        setConsumeTimeout(TestHelper.defaultMessageConsumerPollTimeout(), TimeUnit.SECONDS);
+        initializeConnectorTestFramework();
+        Testing.Files.delete(TestHelper.DB_HISTORY_PATH);
+    }
+
+    @After
+    public void after() throws Exception {
+        if (connection != null) {
+            TestHelper.dropTable(connection, "BLOB_TEST");
+            connection.close();
+        }
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldSnapshotBlobDataTypes() throws Exception {
+        String ddl = "CREATE TABLE BLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_BLOB blob, "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+
+        String dml = "INSERT INTO BLOB_TEST VALUES (1, utl_raw.cast_to_raw('Hello World'))";
+        connection.execute(dml);
+
+        TestHelper.streamTable(connection, "debezium.blob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.BLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidRead(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap("Hello World".getBytes(StandardCharsets.UTF_8)));
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamSmallBlobDataTypeValues() throws Exception {
+        String ddl = "CREATE TABLE BLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_BLOB blob, "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.blob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.BLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Blob blob1 = createBlob(part(BIN_DATA, 0, 100));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (1, ?)", p -> p.setBlob(1, blob1), null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1.getBytes(1, 100)));
+
+        // Insert multiple records, same transaction
+        Blob blob2 = createBlob(part(BIN_DATA, 0, 200));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (2, ?)", p -> p.setBlob(1, blob2), null);
+        Blob blob3 = createBlob(part(BIN_DATA, 0, 300));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (3, ?)", p -> p.setBlob(1, blob3), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2.getBytes(1, 200)));
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3.getBytes(1, 300)));
+
+        // Update record
+        Blob blob1Update = createBlob(part(BIN_DATA, 1, 201));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ? WHERE id = 1", p -> p.setBlob(1, blob1Update), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1Update.getBytes(1, 200)));
+
+        // Update multiple records, same transaction
+        Blob blob2Update = createBlob(part(BIN_DATA, 2, 202));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ? WHERE id = 2", p -> p.setBlob(1, blob2Update), null);
+        Blob blob3Update = createBlob(part(BIN_DATA, 3, 303));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ? WHERE id = 3", p -> p.setBlob(1, blob3Update), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2Update.getBytes(1, 200)));
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3Update.getBytes(1, 300)));
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.blob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // blob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_BLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(4);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_BLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_BLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamSmallBlobDataTypeValuesWithNonBlobFields() throws Exception {
+        String ddl = "CREATE TABLE BLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_BLOB blob, "
+                + "VAL_DATA varchar2(50), "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.blob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.BLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Blob blob1 = createBlob(part(BIN_DATA, 0, 100));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (1, ?, 'Test1')", p -> p.setBlob(1, blob1), null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1.getBytes(1, 100)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1");
+
+        // Insert multiple records, same transaction
+        Blob blob2 = createBlob(part(BIN_DATA, 0, 200));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (2, ?, 'Test2')", p -> p.setBlob(1, blob2), null);
+        Blob blob3 = createBlob(part(BIN_DATA, 0, 300));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (3, ?, 'Test3')", p -> p.setBlob(1, blob3), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2.getBytes(1, 200)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2");
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3.getBytes(1, 300)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3");
+
+        // Update record
+        Blob blob1Update = createBlob(part(BIN_DATA, 1, 201));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ?, val_data = 'Test1U' WHERE id = 1", p -> p.setBlob(1, blob1Update), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1Update.getBytes(1, 200)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1U");
+
+        // Update multiple records, same transaction
+        Blob blob2Update = createBlob(part(BIN_DATA, 2, 202));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ?, val_data = 'Test2U' WHERE id = 2", p -> p.setBlob(1, blob2Update), null);
+        Blob blob3Update = createBlob(part(BIN_DATA, 3, 303));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ?, val_data = 'Test3U' WHERE id = 3", p -> p.setBlob(1, blob3Update), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2Update.getBytes(1, 200)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2U");
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3Update.getBytes(1, 300)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3U");
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.blob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // blob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test1U");
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(4);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test2U");
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test3U");
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamLargeBlobDataTypeValues() throws Exception {
+        String ddl = "CREATE TABLE BLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_BLOB blob, "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.blob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.BLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Blob blob1 = createBlob(part(BIN_DATA, 0, 4000));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (1, ?)", p -> p.setBlob(1, blob1), null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1.getBytes(1, 4000)));
+
+        // Insert multiple records, same transaction
+        Blob blob2 = createBlob(part(BIN_DATA, 10, 4010));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (2, ?)", p -> p.setBlob(1, blob2), null);
+        Blob blob3 = createBlob(part(BIN_DATA, 50, 4050));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (3, ?)", p -> p.setBlob(1, blob3), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2.getBytes(1, 4000)));
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3.getBytes(1, 4000)));
+
+        // Update record
+        Blob blob1Update = createBlob(part(BIN_DATA, 1, 4001));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ? WHERE id = 1", p -> p.setBlob(1, blob1Update), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1Update.getBytes(1, 4000)));
+
+        // Update multiple records, same transaction
+        Blob blob2Update = createBlob(part(BIN_DATA, 2, 4002));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ? WHERE id = 2", p -> p.setBlob(1, blob2Update), null);
+        Blob blob3Update = createBlob(part(BIN_DATA, 3, 4003));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ? WHERE id = 3", p -> p.setBlob(1, blob3Update), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2Update.getBytes(1, 4000)));
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3Update.getBytes(1, 4000)));
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.blob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // blob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_BLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(4);
+        records.forEach(System.out::println);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_BLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_BLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamLargeBlobDataTypeValuesWithNonBlobFields() throws Exception {
+        String ddl = "CREATE TABLE BLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_BLOB blob, "
+                + "VAL_DATA varchar2(50), "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.blob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.BLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Blob blob1 = createBlob(part(BIN_DATA, 0, 4000));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (1, ?, 'Test1')", p -> p.setBlob(1, blob1), null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1");
+
+        // Insert multiple records, same transaction
+        Blob blob2 = createBlob(part(BIN_DATA, 10, 4010));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (2, ?, 'Test2')", p -> p.setBlob(1, blob2), null);
+        Blob blob3 = createBlob(part(BIN_DATA, 50, 4050));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (3, ?, 'Test3')", p -> p.setBlob(1, blob3), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2");
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3");
+
+        // Update record
+        Blob blob1Update = createBlob(part(BIN_DATA, 1, 4001));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ?, val_data = 'Test1U' WHERE id = 1", p -> p.setBlob(1, blob1Update), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1Update.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1U");
+
+        // Update multiple records, same transaction
+        Blob blob2Update = createBlob(part(BIN_DATA, 2, 4002));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ?, val_data = 'Test2U' WHERE id = 2", p -> p.setBlob(1, blob2Update), null);
+        Blob blob3Update = createBlob(part(BIN_DATA, 3, 4003));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blob = ?, val_data = 'Test3U' WHERE id = 3", p -> p.setBlob(1, blob3Update), null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2Update.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2U");
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3Update.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3U");
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.blob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // blob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test1U");
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(4);
+        records.forEach(System.out::println);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test2U");
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test3U");
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamMixedBlobDataTypeValuesWithNonBlobFieldsSameTable() throws Exception {
+        String ddl = "CREATE TABLE BLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_BLOBS blob, "
+                + "VAL_BLOB blob, "
+                + "VAL_DATA varchar2(50), "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.blob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.BLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Blob blob1a = createBlob(part(BIN_DATA, 1, 201));
+        Blob blob1b = createBlob(part(BIN_DATA, 0, 4000));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (1, ?, ?, 'Test1')", p -> {
+            p.setBlob(1, blob1a);
+            p.setBlob(2, blob1b);
+        }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOBS")).isEqualTo(ByteBuffer.wrap(blob1a.getBytes(1, 200)));
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1b.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1");
+
+        // Insert multiple records, same transaction
+        Blob blob2a = createBlob(part(BIN_DATA, 10, 210));
+        Blob blob2b = createBlob(part(BIN_DATA, 10, 4010));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (2, ?, ?, 'Test2')", p -> {
+            p.setBlob(1, blob2a);
+            p.setBlob(2, blob2b);
+        }, null);
+        Blob blob3a = createBlob(part(BIN_DATA, 50, 250));
+        Blob blob3b = createBlob(part(BIN_DATA, 50, 4050));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (3, ?, ?, 'Test3')", p -> {
+            p.setBlob(1, blob3a);
+            p.setBlob(2, blob3b);
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOBS")).isEqualTo(ByteBuffer.wrap(blob2a.getBytes(1, 200)));
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2b.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2");
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOBS")).isEqualTo(ByteBuffer.wrap(blob3a.getBytes(1, 200)));
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3b.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3");
+
+        // Update record
+        Blob blob1aUpdate = createBlob(part(BIN_DATA, 5, 205));
+        Blob blob1bUpdate = createBlob(part(BIN_DATA, 1, 4001));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blobs = ?, val_blob = ?, val_data = 'Test1U' WHERE id = 1", p -> {
+            p.setBlob(1, blob1aUpdate);
+            p.setBlob(2, blob1bUpdate);
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOBS")).isEqualTo(ByteBuffer.wrap(blob1aUpdate.getBytes(1, 200)));
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1bUpdate.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1U");
+
+        // Update multiple records, same transaction
+        Blob blob2aUpdate = createBlob(part(BIN_DATA, 2, 202));
+        Blob blob2bUpdate = createBlob(part(BIN_DATA, 2, 4002));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blobs = ?, val_blob = ?, val_data = 'Test2U' WHERE id = 2", p -> {
+            p.setBlob(1, blob2aUpdate);
+            p.setBlob(2, blob2bUpdate);
+        }, null);
+        Blob blob3aUpdate = createBlob(part(BIN_DATA, 3, 203));
+        Blob blob3bUpdate = createBlob(part(BIN_DATA, 3, 4003));
+        connection.prepareQuery("UPDATE debezium.blob_test SET val_blobs = ?, val_blob = ?, val_data = 'Test3U' WHERE id = 3", p -> {
+            p.setBlob(1, blob3aUpdate);
+            p.setBlob(2, blob3bUpdate);
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOBS")).isEqualTo(ByteBuffer.wrap(blob2aUpdate.getBytes(1, 200)));
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob2bUpdate.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2U");
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_BLOBS")).isEqualTo(ByteBuffer.wrap(blob3aUpdate.getBytes(1, 200)));
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob3bUpdate.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3U");
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.blob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // blob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_BLOBS")).isNull();
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test1U");
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.blob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(4);
+        records.forEach(System.out::println);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_BLOBS")).isNull();
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test2U");
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // blob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_BLOBS")).isNull();
+        assertThat(before.get("VAL_BLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test3U");
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldNotStreamAnyChangesWhenLobEraseIsDetected() throws Exception {
+        String ddl = "CREATE TABLE BLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_BLOB blob, "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.blob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.BLOB_TEST")
+                .build();
+
+        LogInterceptor logInterceptor = new LogInterceptor();
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Blob blob1 = createBlob(part(BIN_DATA, 0, 4000));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (1, ?)", p -> p.setBlob(1, blob1), null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1.getBytes(1, 4000)));
+
+        // Execute LOB_ERASE
+        connection.execute("DECLARE loc_b BLOB; amount integer; BEGIN "
+                + "SELECT \"VAL_BLOB\" INTO loc_b FROM BLOB_TEST WHERE ID = 1 for update; "
+                + "amount := 10;"
+                + "dbms_lob.erase(loc_b, amount, 1); end;");
+
+        // Wait until the log has recorded the message.
+        Awaitility.await().atMost(Duration.ofMinutes(1)).until(() -> logInterceptor.containsWarnMessage("LOB_ERASE for table"));
+        assertNoRecordsToConsume();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamBlobFieldsWithPrimaryKeyChange() throws Exception {
+        String ddl = "CREATE TABLE BLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_BLOBS blob, "
+                + "VAL_BLOB blob, "
+                + "VAL_DATA varchar2(50), "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.blob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.BLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Blob blob1a = createBlob(part(BIN_DATA, 1, 201));
+        Blob blob1b = createBlob(part(BIN_DATA, 0, 4000));
+        connection.prepareQuery("INSERT INTO debezium.blob_test values (1, ?, ?, 'Test1')", p -> {
+            p.setBlob(1, blob1a);
+            p.setBlob(2, blob1b);
+        }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("BLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_BLOBS")).isEqualTo(ByteBuffer.wrap(blob1a.getBytes(1, 200)));
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1b.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1");
+
+        // Update record, including primary key
+        Blob blob1aUpdate = createBlob(part(BIN_DATA, 5, 205));
+        Blob blob1bUpdate = createBlob(part(BIN_DATA, 1, 4001));
+        connection.prepareQuery("UPDATE debezium.blob_test SET id = 2, val_blobs = ?, val_blob = ?, val_data = 'Test1U' WHERE id = 1", p -> {
+            p.setBlob(1, blob1aUpdate);
+            p.setBlob(2, blob1bUpdate);
+        }, null);
+        connection.commit();
+
+        // 3 records, one indicating the deletion of PK 1, tombstone, and PK 2
+        records = consumeRecordsByTopic(3);
+        assertThat(records.recordsForTopic(topicName("BLOB_TEST"))).hasSize(3);
+
+        record = records.recordsForTopic(topicName("BLOB_TEST")).get(2);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_BLOBS")).isEqualTo(ByteBuffer.wrap(blob1aUpdate.getBytes(1, 200)));
+        assertThat(after.get("VAL_BLOB")).isEqualTo(ByteBuffer.wrap(blob1bUpdate.getBytes(1, 4000)));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1U");
+    }
+
+    private static byte[] part(byte[] buffer, int start, int length) {
+        return Arrays.copyOfRange(buffer, start, length);
+    }
+
+    private static Struct before(SourceRecord record) {
+        return ((Struct) record.value()).getStruct(Envelope.FieldName.BEFORE);
+    }
+
+    private static Struct after(SourceRecord record) {
+        return ((Struct) record.value()).getStruct(Envelope.FieldName.AFTER);
+    }
+
+    private static String topicName(String tableName) {
+        return TestHelper.SERVER_NAME + ".DEBEZIUM." + tableName;
+    }
+
+    private static byte[] readBinaryData(String pathOnClasspath) {
+        try (InputStream stream = Testing.Files.readResourceAsStream(pathOnClasspath)) {
+            return IoUtil.readBytes(stream);
+        }
+        catch (IOException e) {
+            Fail.fail("Unable to read '" + pathOnClasspath + "'", e);
+            return null;
+        }
+    }
+
+    private Blob createBlob(byte[] data) throws SQLException {
+        final Blob blob = connection.connection().createBlob();
+        blob.setBytes(1, data);
+        return blob;
+    }
+}

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/OracleClobDataTypeIT.java

@@ -0,0 +1,1370 @@
+/*
+ * Copyright Debezium Authors.
+ *
+ * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
+ */
+package io.debezium.connector.oracle;
+
+import static org.fest.assertions.Assertions.assertThat;
+
+import java.sql.Clob;
+import java.sql.NClob;
+import java.sql.SQLException;
+import java.time.Duration;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.kafka.connect.data.Struct;
+import org.apache.kafka.connect.source.SourceRecord;
+import org.awaitility.Awaitility;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TestRule;
+
+import io.debezium.config.Configuration;
+import io.debezium.connector.oracle.junit.SkipTestDependingOnAdapterNameRule;
+import io.debezium.connector.oracle.junit.SkipWhenAdapterNameIs;
+import io.debezium.connector.oracle.util.TestHelper;
+import io.debezium.data.Envelope;
+import io.debezium.data.VerifyRecord;
+import io.debezium.doc.FixFor;
+import io.debezium.embedded.AbstractConnectorTest;
+import io.debezium.junit.logging.LogInterceptor;
+import io.debezium.util.Testing;
+
+/**
+ * Integration tests for CLOB data type support.
+ *
+ * @author Chris Cranford
+ */
+@SkipWhenAdapterNameIs(value = SkipWhenAdapterNameIs.AdapterName.XSTREAM, reason = "XStream does not yet support BLOB data types")
+public class OracleClobDataTypeIT extends AbstractConnectorTest {
+
+    private static final String JSON_DATA = Testing.Files.readResourceAsString("data/test_lob_data.json");
+    private static final String JSON_DATA2 = Testing.Files.readResourceAsString("data/test_lob_data2.json");
+
+    @Rule
+    public final TestRule skipAdapterRule = new SkipTestDependingOnAdapterNameRule();
+
+    private OracleConnection connection;
+
+    @Before
+    public void before() {
+        connection = TestHelper.testConnection();
+        TestHelper.dropTable(connection, "CLOB_TEST");
+
+        setConsumeTimeout(TestHelper.defaultMessageConsumerPollTimeout(), TimeUnit.SECONDS);
+        initializeConnectorTestFramework();
+        Testing.Files.delete(TestHelper.DB_HISTORY_PATH);
+    }
+
+    @After
+    public void after() throws Exception {
+        if (connection != null) {
+            TestHelper.dropTable(connection, "CLOB_TEST");
+            connection.close();
+        }
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldSnapshotClobDataTypeValues() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB_SHORT clob, "
+                + "VAL_CLOB_LONG clob, "
+                + "VAL_NCLOB_SHORT nclob, "
+                + "VAL_NCLOB_LONG nclob, "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+
+        Clob clob1 = createClob("Hello World");
+        Clob clob2 = createClob(part(JSON_DATA, 0, 5000));
+        NClob nclob1 = createNClob("Hello World");
+        NClob nclob2 = createNClob(part(JSON_DATA2, 0, 5000));
+
+        connection.prepareQuery("INSERT INTO CLOB_TEST VALUES (1, ?, ?, ?, ?)", ps -> {
+            ps.setClob(1, clob1);
+            ps.setClob(2, clob2);
+            ps.setNClob(3, nclob1);
+            ps.setNClob(4, nclob2);
+        }, null);
+        connection.commit();
+
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidRead(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB_SHORT")).isEqualTo(getClobString(clob1));
+        assertThat(after.get("VAL_CLOB_LONG")).isEqualTo(getClobString(clob2));
+        assertThat(after.get("VAL_NCLOB_SHORT")).isEqualTo(getClobString(nclob1));
+        assertThat(after.get("VAL_NCLOB_LONG")).isEqualTo(getClobString(nclob2));
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamInlineClobDataTypeValues() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB clob, "
+                + "VAL_NCLOB nclob, "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Clob clob1 = createClob(part(JSON_DATA, 0, 1000));
+        NClob nclob1 = createNClob(part(JSON_DATA2, 0, 1000));
+        connection.prepareQuery("INSERT INTO CLOB_TEST VALUES (1, ?, ?)", ps -> { ps.setClob(1, clob1); ps.setNClob(2, nclob1); }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1));
+
+        // Insert multiple records, same transaction
+        Clob clob2 = createClob(part(JSON_DATA, 1, 1000));
+        NClob nclob2 = createNClob(part(JSON_DATA2, 1, 1000));
+        connection.prepareQuery("INSERT INTO CLOB_TEST VALUES (2, ?, ?)", ps -> { ps.setClob(1, clob2); ps.setNClob(2, nclob2); }, null);
+        Clob clob3 = createClob(part(JSON_DATA, 2, 1000));
+        NClob nclob3 = createNClob(part(JSON_DATA2, 2, 1000));
+        connection.prepareQuery("INSERT INTO CLOB_TEST VALUES (3, ?, ?)", ps -> { ps.setClob(1, clob3); ps.setNClob(2, nclob3); }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2));
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3));
+
+        // Update record
+        Clob clob1Update = createClob(part(JSON_DATA, 1, 1000));
+        NClob nclob1Update = createNClob(part(JSON_DATA2, 1, 1000));
+        connection.prepareQuery("UPDATE CLOB_TEST SET val_clob=?, val_nclob=? WHERE id = 1", ps -> { ps.setClob(1, clob1Update); ps.setNClob(2, nclob1Update); }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1Update));
+
+        // Update multiple records, same transaction
+        Clob clob2Update = createClob(part(JSON_DATA, 0, 1024));
+        NClob nclob2Update = createNClob(part(JSON_DATA2, 0, 1024));
+        connection.prepareQuery("UPDATE CLOB_TEST SET val_clob=?, val_nclob=? WHERE id = 2", ps -> { ps.setClob(1, clob2Update); ps.setNClob(2, nclob2Update); }, null);
+        Clob clob3Update = createClob(part(JSON_DATA, 1, 1025));
+        NClob nclob3Update = createNClob(part(JSON_DATA2, 1, 1025));
+        connection.prepareQuery("UPDATE CLOB_TEST SET val_clob=?, val_nclob=? WHERE id = 3", ps -> { ps.setClob(1, clob3Update); ps.setNClob(2, nclob3Update); }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2Update));
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3Update));
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.clob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // clob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(4);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamInlineClobDataTypeValuesWithNonClobDataTypeField() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB clob, "
+                + "VAL_NCLOB nclob, "
+                + "VAL_DATA varchar2(50), "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Clob clob1 = createClob(part(JSON_DATA, 0, 1000));
+        NClob nclob1 = createNClob(part(JSON_DATA2, 0, 1000));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (1, ?, ?, 'Test1')", ps -> { ps.setClob(1, clob1); ps.setNClob(2, nclob1); }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1");
+
+        // Insert multiple records, same transaction
+        Clob clob2 = createClob(part(JSON_DATA, 1, 1000));
+        NClob nclob2 = createNClob(part(JSON_DATA2, 1, 1000));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (2, ?, ?, 'Test2')", ps -> { ps.setClob(1, clob2); ps.setNClob(2, nclob2); }, null);
+        Clob clob3 = createClob(part(JSON_DATA, 2, 1000));
+        NClob nclob3 = createNClob(part(JSON_DATA2, 2, 1000));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (3, ?, ?, 'Test3')", ps -> { ps.setClob(1, clob3); ps.setNClob(2, nclob3); }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2");
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3");
+
+        // Update record
+        Clob clob1Update = createClob(part(JSON_DATA, 1, 1000));
+        NClob nclob1Update = createNClob(part(JSON_DATA2, 1, 1000));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_data='Test1U' WHERE id = 1", ps -> {
+            ps.setClob(1, clob1Update);
+            ps.setNClob(2, nclob1Update);
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1Update));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1U");
+
+        // Update multiple records, same transaction
+        Clob clob2Update = createClob(part(JSON_DATA, 0, 1024));
+        NClob nclob2Update = createNClob(part(JSON_DATA2, 0, 1024));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_data='Test2U' WHERE id = 2", ps -> {
+            ps.setClob(1, clob2Update);
+            ps.setNClob(2, nclob2Update);
+        }, null);
+        Clob clob3Update = createClob(part(JSON_DATA, 1, 1025));
+        NClob nclob3Update = createNClob(part(JSON_DATA2, 1, 1025));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_data='Test3U' WHERE id = 3", ps -> {
+            ps.setClob(1, clob3Update);
+            ps.setNClob(2, nclob3Update);
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2Update));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2U");
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3Update));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3U");
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.clob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // clob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test1U");
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(4);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test2U");
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test3U");
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamLargeClobDataTypeValues() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB clob, "
+                + "VAL_NCLOB nclob, "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Clob clob1 = createClob(part(JSON_DATA, 0, 5000));
+        NClob nclob1 = createNClob(part(JSON_DATA2, 0, 5000));
+        connection.prepareQuery("INSERT INTO CLOB_TEST VALUES (1, ?, ?)", ps -> { ps.setClob(1, clob1); ps.setNClob(2, nclob1); }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1));
+
+        // Insert multiple records, same transaction
+        Clob clob2 = createClob(part(JSON_DATA, 1, 4450));
+        NClob nclob2 = createNClob(part(JSON_DATA2, 1, 4450));
+        connection.prepareQuery("INSERT INTO CLOB_TEST VALUES (2, ?, ?)", ps -> { ps.setClob(1, clob2); ps.setNClob(2, nclob2); }, null);
+        Clob clob3 = createClob(part(JSON_DATA, 3, 4450));
+        NClob nclob3 = createNClob(part(JSON_DATA2, 3, 4450));
+        connection.prepareQuery("INSERT INTO CLOB_TEST VALUES (3, ?, ?)", ps -> { ps.setClob(1, clob3); ps.setNClob(2, nclob3); }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2));
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3));
+
+        // Update record
+        Clob clob1Update = createClob(part(JSON_DATA, 1, 4500));
+        NClob nclob1Update = createNClob(part(JSON_DATA2, 1, 4500));
+        connection.prepareQuery("UPDATE CLOB_TEST SET val_clob=?, val_nclob=? WHERE id = 1", ps -> { ps.setClob(1, clob1Update); ps.setNClob(2, nclob1Update); }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1Update));
+
+        // Update multiple records, same transaction
+        Clob clob2Update = createClob(part(JSON_DATA, 2, 5000));
+        NClob nclob2Update = createNClob(part(JSON_DATA2, 2, 5000));
+        connection.prepareQuery("UPDATE CLOB_TEST SET val_clob=?, val_nclob=? WHERE id = 2", ps -> { ps.setClob(1, clob2Update); ps.setNClob(2, nclob2Update); }, null);
+        Clob clob3Update = createClob(part(JSON_DATA, 3, 5000));
+        NClob nclob3Update = createNClob(part(JSON_DATA2, 3, 5000));
+        connection.prepareQuery("UPDATE CLOB_TEST SET val_clob=?, val_nclob=? WHERE id = 3", ps -> { ps.setClob(1, clob3Update); ps.setNClob(2, nclob3Update); }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2Update));
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3Update));
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.clob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // clob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(4);
+        records.forEach(System.out::println);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamLargeClobDataTypeValuesWithNonClobDataTypeField() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB clob, "
+                + "VAL_NCLOB nclob, "
+                + "VAL_DATA varchar2(50), "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Clob clob1 = createClob(part(JSON_DATA, 0, 5000));
+        NClob nclob1 = createNClob(part(JSON_DATA2, 0, 5000));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (1, ?, ?, 'Test1')", ps -> { ps.setClob(1, clob1); ps.setNClob(2, nclob1); }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1");
+
+        // Insert multiple records, same transaction
+        Clob clob2 = createClob(part(JSON_DATA, 1, 4450));
+        NClob nclob2 = createNClob(part(JSON_DATA2, 2, 4450));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (2, ?, ?, 'Test2')", ps -> { ps.setClob(1, clob2); ps.setNClob(2, nclob2); }, null);
+        Clob clob3 = createClob(part(JSON_DATA, 3, 4450));
+        NClob nclob3 = createNClob(part(JSON_DATA2, 4, 4450));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (3, ?, ?, 'Test3')", ps -> { ps.setClob(1, clob3); ps.setNClob(2, nclob3); }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2");
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3");
+
+        // Update record
+        Clob clob1Update = createClob(part(JSON_DATA, 1, 4500));
+        NClob nclob1Update = createNClob(part(JSON_DATA2, 1, 4500));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_data='Test1U' WHERE id = 1", ps -> {
+            ps.setClob(1, clob1Update);
+            ps.setNClob(2, nclob1Update);
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1Update));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test1U");
+
+        // Update multiple records, same transaction
+        Clob clob2Update = createClob(part(JSON_DATA, 2, 5000));
+        NClob nclob2Update = createNClob(part(JSON_DATA2, 2, 5000));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_data='Test2U' WHERE id = 2", ps -> {
+            ps.setClob(1, clob2Update);
+            ps.setNClob(2, nclob2Update);
+        }, null);
+        Clob clob3Update = createClob(part(JSON_DATA, 3, 5000));
+        NClob nclob3Update = createNClob(part(JSON_DATA2, 3, 5000));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_data='Test3U' WHERE id = 3", ps -> {
+            ps.setClob(1, clob3Update);
+            ps.setNClob(2, nclob3Update);
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2Update));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test2U");
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3Update));
+        assertThat(after.get("VAL_DATA")).isEqualTo("Test3U");
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.clob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // clob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test1U");
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(4);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test2U");
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_DATA")).isEqualTo("Test3U");
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamMixedClobDataTypeValuesWithNonClobFieldsSameTable() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB clob, "
+                + "VAL_NCLOB nclob, "
+                + "VAL_CLOBS clob, "
+                + "VAL_NCLOBS nclob, "
+                + "VAL_VARCHAR2 varchar2(50),"
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Clob clob1 = createClob(part(JSON_DATA, 0, 5000));
+        NClob nclob1 = createNClob(part(JSON_DATA2, 0, 5000));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (1, ?, ?, 'ClobTest', 'NClobTest', 'Test1')", ps -> {
+            ps.setClob(1, clob1);
+            ps.setNClob(2, nclob1);
+            }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test1");
+
+        // Insert multiple records, same transaction
+        Clob clob2 = createClob(part(JSON_DATA, 1, 4450));
+        NClob nclob2 = createNClob(part(JSON_DATA2, 2, 4450));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (2, ?, ?, 'ClobTest2', 'NClobTest2', 'Test2')", ps -> {
+            ps.setClob(1, clob2);
+            ps.setNClob(2, nclob2);
+            }, null);
+        Clob clob3 = createClob(part(JSON_DATA, 3, 4450));
+        NClob nclob3 = createNClob(part(JSON_DATA2, 4, 4450));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (3, ?, ?, 'ClobTest3', 'NClobTest3', 'Test3')", ps -> {
+            ps.setClob(1, clob3);
+            ps.setNClob(2, nclob3);
+            }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest2");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest2");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test2");
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest3");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest3");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test3");
+
+        // Update record
+        Clob clob1Update = createClob(part(JSON_DATA, 1, 4500));
+        NClob nclob1Update = createNClob(part(JSON_DATA2, 1, 4500));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_clobs=?, val_nclobs=?, val_varchar2='Test1U' WHERE id = 1", ps -> {
+            ps.setClob(1, clob1Update);
+            ps.setNClob(2, nclob1Update);
+            ps.setString(3, "ClobTest1Updated");
+            ps.setString(4, "NClobTest1Updated");
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1Update));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest1Updated");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest1Updated");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test1U");
+
+        // Update multiple records, same transaction
+        Clob clob2Update = createClob(part(JSON_DATA, 2, 5000));
+        NClob nclob2Update = createNClob(part(JSON_DATA2, 2, 5000));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_clobs=?, val_nclobs=?, val_varchar2='Test2U' WHERE id = 2", ps -> {
+            ps.setClob(1, clob2Update);
+            ps.setNClob(2, nclob2Update);
+            ps.setString(3, "ClobTest2Updated");
+            ps.setString(4, "NClobTest2Updated");
+        }, null);
+        Clob clob3Update = createClob(part(JSON_DATA, 3, 5000));
+        NClob nclob3Update = createNClob(part(JSON_DATA2, 3, 5000));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_clobs=?, val_nclobs=?, val_varchar2='Test3U' WHERE id = 3", ps -> {
+            ps.setClob(1, clob3Update);
+            ps.setNClob(2, nclob3Update);
+            ps.setString(3, "ClobTest3Updated");
+            ps.setString(4, "NClobTest3Updated");
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2Update));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest2Updated");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest2Updated");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test2U");
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3Update));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest3Updated");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest3Updated");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test3U");
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.clob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // clob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_VARCHAR2")).isEqualTo("Test1U");
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(4);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_VARCHAR2")).isEqualTo("Test2U");
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_VARCHAR2")).isEqualTo("Test3U");
+
+        assertThat(after(record)).isNull();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldNotStreamAnyChangesWhenLobEraseIsDetected() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB clob, "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        LogInterceptor logInterceptor = new LogInterceptor();
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Clob clob1 = createClob(part(JSON_DATA, 0, 5000));
+        connection.prepareQuery("INSERT INTO CLOB_TEST VALUES (1, ?)", ps -> ps.setClob(1, clob1), null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1));
+
+        // Execute LOB_ERASE
+        connection.execute("DECLARE loc_c CLOB; amount integer; BEGIN " +
+                "SELECT \"VAL_CLOB\" INTO loc_c FROM CLOB_TEST WHERE ID = 1 for update; " +
+                "amount := 10;" +
+                "dbms_lob.erase(loc_c, amount, 1); end;");
+
+        // Wait until the log has recorded the message.
+        Awaitility.await().atMost(Duration.ofMinutes(1)).until(() -> logInterceptor.containsWarnMessage("LOB_ERASE for table"));
+        assertNoRecordsToConsume();
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamClobDataTypeValuesWithPrimaryKeyChange() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB clob, "
+                + "VAL_NCLOB nclob, "
+                + "VAL_CLOBS clob, "
+                + "VAL_NCLOBS nclob, "
+                + "VAL_VARCHAR2 varchar2(50), "
+                + "primary key(id))";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Clob clob1 = createClob(part(JSON_DATA, 0, 5000));
+        NClob nclob1 = createNClob(part(JSON_DATA2, 0, 5000));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (1, ?, ?, 'ClobTest', 'NClobTest', 'Test1')", ps -> {
+            ps.setClob(1, clob1);
+            ps.setNClob(2, nclob1);
+        }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test1");
+
+        // Update record, including primary key
+        Clob clob1Update = createClob(part(JSON_DATA, 1, 4500));
+        NClob nclob1Update = createNClob(part(JSON_DATA2, 1, 4500));
+        connection.prepareQuery("UPDATE clob_test SET id=2, val_clob=?, val_nclob=?, val_clobs=?, val_nclobs=?, val_varchar2='Test1U' WHERE id = 1", ps -> {
+            ps.setClob(1, clob1Update);
+            ps.setNClob(2, nclob1Update);
+            ps.setString(3, "ClobTest1Updated");
+            ps.setString(4, "NClobTest1Updated");
+        }, null);
+        connection.commit();
+
+        // 3 records, one indicating the deletion of PK 1, tombstone, and PK 2
+        records = consumeRecordsByTopic(3);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(3);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(2);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1Update));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest1Updated");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest1Updated");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test1U");
+    }
+
+    @Test
+    @FixFor("DBZ-2948")
+    public void shouldStreamClobDataTypeValuesUsingBasicFileStorage() throws Exception {
+        String ddl = "CREATE TABLE CLOB_TEST ("
+                + "ID numeric(9,0), "
+                + "VAL_CLOB clob, "
+                + "VAL_NCLOB nclob, "
+                + "VAL_CLOBS clob, "
+                + "VAL_NCLOBS nclob, "
+                + "VAL_VARCHAR2 varchar2(50), "
+                + "primary key(id)) "
+                + "LOB(VAL_CLOB) STORE AS BASICFILE "
+                + "LOB(VAL_NCLOB) STORE AS BASICFILE "
+                + "LOB(VAL_CLOBS) STORE AS BASICFILE "
+                + "LOB(VAL_NCLOBS) STORE AS BASICFILE";
+
+        connection.execute(ddl);
+        TestHelper.streamTable(connection, "debezium.clob_test");
+
+        Configuration config = TestHelper.defaultConfig()
+                .with(OracleConnectorConfig.TABLE_INCLUDE_LIST, "DEBEZIUM\\.CLOB_TEST")
+                .build();
+
+        start(OracleConnector.class, config);
+        assertConnectorIsRunning();
+        waitForSnapshotToBeCompleted(TestHelper.CONNECTOR_NAME, TestHelper.SERVER_NAME);
+
+        // Insert record
+        Clob clob1 = createClob(part(JSON_DATA, 0, 5000));
+        NClob nclob1 = createNClob(part(JSON_DATA2, 0, 5000));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (1, ?, ?, 'ClobTest', 'NClobTest', 'Test1')", ps -> {
+            ps.setClob(1, clob1);
+            ps.setNClob(2, nclob1);
+        }, null);
+        connection.commit();
+
+        SourceRecords records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        SourceRecord record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 1);
+
+        Struct after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test1");
+
+        // Insert multiple records, same transaction
+        Clob clob2 = createClob(part(JSON_DATA, 1, 4450));
+        NClob nclob2 = createNClob(part(JSON_DATA2, 2, 4450));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (2, ?, ?, 'ClobTest2', 'NClobTest2', 'Test2')", ps -> {
+            ps.setClob(1, clob2);
+            ps.setNClob(2, nclob2);
+        }, null);
+        Clob clob3 = createClob(part(JSON_DATA, 3, 4450));
+        NClob nclob3 = createNClob(part(JSON_DATA2, 4, 4450));
+        connection.prepareQuery("INSERT INTO clob_test VALUES (3, ?, ?, 'ClobTest3', 'NClobTest3', 'Test3')", ps -> {
+            ps.setClob(1, clob3);
+            ps.setNClob(2, nclob3);
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidInsert(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest2");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest2");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test2");
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidInsert(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest3");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest3");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test3");
+
+        // Update record
+        Clob clob1Update = createClob(part(JSON_DATA, 1, 4500));
+        NClob nclob1Update = createNClob(part(JSON_DATA2, 1, 4500));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_clobs=?, val_nclobs=?, val_varchar2='Test1U' WHERE id = 1", ps -> {
+            ps.setClob(1, clob1Update);
+            ps.setNClob(2, nclob1Update);
+            ps.setString(3, "ClobTest1Updated");
+            ps.setString(4, "NClobTest1Updated");
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(1);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(1);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 1);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(1);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob1Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob1Update));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest1Updated");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest1Updated");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test1U");
+
+        // Update multiple records, same transaction
+        Clob clob2Update = createClob(part(JSON_DATA, 2, 5000));
+        NClob nclob2Update = createNClob(part(JSON_DATA2, 2, 5000));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_clobs=?, val_nclobs=?, val_varchar2='Test2U' WHERE id = 2", ps -> {
+            ps.setClob(1, clob2Update);
+            ps.setNClob(2, nclob2Update);
+            ps.setString(3, "ClobTest2Updated");
+            ps.setString(4, "NClobTest2Updated");
+        }, null);
+        Clob clob3Update = createClob(part(JSON_DATA, 3, 5000));
+        NClob nclob3Update = createNClob(part(JSON_DATA2, 3, 5000));
+        connection.prepareQuery("UPDATE clob_test SET val_clob=?, val_nclob=?, val_clobs=?, val_nclobs=?, val_varchar2='Test3U' WHERE id = 3", ps -> {
+            ps.setClob(1, clob3Update);
+            ps.setNClob(2, nclob3Update);
+            ps.setString(3, "ClobTest3Updated");
+            ps.setString(4, "NClobTest3Updated");
+        }, null);
+        connection.commit();
+
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidUpdate(record, "ID", 2);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(2);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob2Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob2Update));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest2Updated");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest2Updated");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test2U");
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(1);
+        VerifyRecord.isValidUpdate(record, "ID", 3);
+
+        after = after(record);
+        assertThat(after.get("ID")).isEqualTo(3);
+        assertThat(after.get("VAL_CLOB")).isEqualTo(getClobString(clob3Update));
+        assertThat(after.get("VAL_NCLOB")).isEqualTo(getClobString(nclob3Update));
+        assertThat(after.get("VAL_CLOBS")).isEqualTo("ClobTest3Updated");
+        assertThat(after.get("VAL_NCLOBS")).isEqualTo("NClobTest3Updated");
+        assertThat(after.get("VAL_VARCHAR2")).isEqualTo("Test3U");
+
+        // Delete record
+        connection.execute("DELETE FROM debezium.clob_test WHERE id = 1");
+
+        // two records, delete + tombstone
+        records = consumeRecordsByTopic(2);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(2);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 1);
+
+        // clob fields will never have a "before" state
+        Struct before = before(record);
+        assertThat(before.get("ID")).isEqualTo(1);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_VARCHAR2")).isEqualTo("Test1U");
+
+        assertThat(after(record)).isNull();
+
+        // Delete multiple records, same transaction
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 2");
+        connection.executeWithoutCommitting("DELETE FROM debezium.clob_test WHERE id = 3");
+        connection.execute("COMMIT");
+
+        // 2 deletes + 2 tombstones
+        records = consumeRecordsByTopic(4);
+        assertThat(records.recordsForTopic(topicName("CLOB_TEST"))).hasSize(4);
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(0);
+        VerifyRecord.isValidDelete(record, "ID", 2);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(2);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_VARCHAR2")).isEqualTo("Test2U");
+
+        assertThat(after(record)).isNull();
+
+        record = records.recordsForTopic(topicName("CLOB_TEST")).get(2);
+        VerifyRecord.isValidDelete(record, "ID", 3);
+
+        // clob fields will never have a "before" state
+        before = before(record);
+        assertThat(before.get("ID")).isEqualTo(3);
+        assertThat(before.get("VAL_CLOB")).isNull();
+        assertThat(before.get("VAL_NCLOB")).isNull();
+        assertThat(before.get("VAL_VARCHAR2")).isEqualTo("Test3U");
+
+        assertThat(after(record)).isNull();
+    }
+
+    private Clob createClob(String data) throws SQLException {
+        Clob clob = connection.connection().createClob();
+        clob.setString(1, data);
+        return clob;
+    }
+
+    private NClob createNClob(String data) throws SQLException {
+        NClob nclob = connection.connection().createNClob();
+        nclob.setString(1, data);
+        return nclob;
+    }
+
+    private static String part(String text, int start, int length) {
+        return text == null ? "" : text.substring(start, Math.min(length, text.length()));
+    }
+
+    private static Struct before(SourceRecord record) {
+        return ((Struct) record.value()).getStruct(Envelope.FieldName.BEFORE);
+    }
+
+    private static Struct after(SourceRecord record) {
+        return ((Struct) record.value()).getStruct(Envelope.FieldName.AFTER);
+    }
+
+    private static String topicName(String tableName) {
+        return TestHelper.SERVER_NAME + ".DEBEZIUM." + tableName;
+    }
+
+    private static String getClobString(Clob clob) throws SQLException {
+        return clob.getSubString(1, (int) clob.length());
+    }
+}

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/OracleConnectorIT.java

@@ -1573,6 +1573,7 @@ record = records.recordsForTopic("server1.DEBEZIUM.TEST_IOT").get(0);
         }
     }
 
+    // todo: should this test be removed since its now covered in OracleClobDataTypesIT?
     @Test
     @FixFor("DBZ-3257")
     @SkipWhenAdapterNameIsNot(value = SkipWhenAdapterNameIsNot.AdapterName.LOGMINER)

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/SnapshotDatatypesIT.java

@@ -38,6 +38,7 @@ public static void beforeClass() throws SQLException {
         insertFpTypes();
         insertIntTypes();
         insertTimeTypes();
+        insertClobTypes();
     }
 
     @Before
@@ -81,6 +82,8 @@ private String getTableIncludeList() {
             case "timeTypesAsAdaptiveMicroseconds":
             case "timeTypesAsConnect":
                 return "debezium.type_time";
+            case "clobTypes":
+                return "debezium.type_clob";
             default:
                 throw new IllegalArgumentException("Unexpected test method: " + name.getMethodName());
         }

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/logminer/LogMinerDmlParserTest.java

@@ -12,7 +12,6 @@
 
 import io.debezium.connector.oracle.logminer.parser.LogMinerDmlParser;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
-import io.debezium.data.Envelope.Operation;
 import io.debezium.doc.FixFor;
 import io.debezium.relational.Column;
 import io.debezium.relational.Table;
@@ -56,7 +55,7 @@ public void testParsingInsert() throws Exception {
                 "TO_DATE('2020-02-01 00:00:00', 'YYYY-MM-DD HH24:MI:SS'),Unsupported Type,NULL,NULL);";
 
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.CREATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.INSERT);
         assertThat(entry.getOldValues()).isEmpty();
         assertThat(entry.getNewValues()).hasSize(9);
         assertThat(entry.getNewValues().get(0).getColumnName()).isEqualTo("ID");
@@ -104,7 +103,7 @@ public void testParsingUpdate() throws Exception {
                 "\"UT2\" = Unsupported Type and \"C1\" = NULL and \"IS\" IS NULL and \"IS2\" IS NULL;";
 
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.UPDATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.UPDATE);
         assertThat(entry.getOldValues()).hasSize(10);
         assertThat(entry.getOldValues().get(0).getColumnName()).isEqualTo("ID");
         assertThat(entry.getOldValues().get(1).getColumnName()).isEqualTo("NAME");
@@ -170,7 +169,7 @@ public void testParsingDelete() throws Exception {
                 "\"IS\" IS NULL and \"IS2\" IS NULL;";
 
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.DELETE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.DELETE);
         assertThat(entry.getOldValues()).hasSize(8);
         assertThat(entry.getOldValues().get(0).getColumnName()).isEqualTo("ID");
         assertThat(entry.getOldValues().get(1).getColumnName()).isEqualTo("NAME");
@@ -205,7 +204,7 @@ public void testParsingUpdateWithNoWhereClauseIsAcceptable() throws Exception {
         String sql = "update \"DEBEZIUM\".\"TEST\" set \"COL1\" = '1', \"COL2\" = NULL, \"COL3\" = 'Hello';";
 
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.UPDATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.UPDATE);
         assertThat(entry.getOldValues()).isEmpty();
         assertThat(entry.getNewValues()).hasSize(4);
         assertThat(entry.getNewValues().get(0).getColumnName()).isEqualTo("COL1");
@@ -232,7 +231,7 @@ public void testParsingDeleteWithNoWhereClauseIsAcceptable() throws Exception {
         String sql = "delete from \"DEBEZIUM\".\"TEST\";";
 
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.DELETE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.DELETE);
         assertThat(entry.getOldValues()).isEmpty();
         assertThat(entry.getNewValues()).isEmpty();
     }
@@ -248,7 +247,7 @@ public void testNameWithWhitespaces() throws Exception {
         String sql = "insert into \"UNKNOWN\".\"OBJ# 74858\"(\"COL 1\") values (1)";
 
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.CREATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.INSERT);
         assertThat(entry.getOldValues()).isEmpty();
         assertThat(entry.getNewValues()).hasSize(1);
         assertThat(entry.getNewValues().get(0).getColumnName()).isEqualTo("COL 1");
@@ -270,7 +269,7 @@ public void testParsingUpdateWithNoWhereClauseFunctionAsLastColumn() throws Exce
                 "\"PAY_STATUS\" = '10111015', \"IS_DEL\" = '0', \"TM_UPDATE\" = TO_DATE('2021-03-17 10:18:55', 'YYYY-MM-DD HH24:MI:SS');";
 
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.UPDATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.UPDATE);
         assertThat(entry.getOldValues()).isEmpty();
         assertThat(entry.getNewValues()).hasSize(5);
         assertThat(entry.getNewValues().get(0).getColumnName()).isEqualTo("AMOUNT_PAID");
@@ -297,7 +296,7 @@ public void shouldParsingRedoSqlWithParenthesisInFunctionArgumentStrings() throw
         String sql = "insert into \"DEBEZIUM\".\"TEST\" (\"C1\", \"C2\") values (UNISTR('\\963F\\72F8\\5C0F\\706B\\8F66\\5BB6\\5EAD\\7968(\\60CA\\559C\\FF09\\FF082161\\FF09'), NULL);";
 
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.CREATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.INSERT);
         assertThat(entry.getOldValues()).isEmpty();
         assertThat(entry.getNewValues()).hasSize(2);
         assertThat(entry.getNewValues().get(0).getColumnName()).isEqualTo("C1");
@@ -310,7 +309,7 @@ public void shouldParsingRedoSqlWithParenthesisInFunctionArgumentStrings() throw
                 "\"C2\" = UNISTR('\\963F\\72F8\\5C0F\\706B\\8F66\\5BB6\\5EAD\\7968(\\60CA\\559C\\FF09\\FF082161\\FF09') " +
                 "where \"C1\" = UNISTR('\\963F\\72F8\\5C0F\\706B\\8F66\\5BB6\\5EAD\\7968(\\60CA\\559C\\FF09\\FF082161\\FF09');";
         entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.UPDATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.UPDATE);
         assertThat(entry.getOldValues()).hasSize(2);
         assertThat(entry.getOldValues().get(0).getColumnName()).isEqualTo("C1");
         assertThat(entry.getOldValues().get(0).getColumnData())
@@ -327,7 +326,7 @@ public void shouldParsingRedoSqlWithParenthesisInFunctionArgumentStrings() throw
 
         sql = "delete from \"DEBEZIUM\".\"TEST\" where \"C1\" = UNISTR('\\963F\\72F8\\5C0F\\706B\\8F66\\5BB6\\5EAD\\7968(\\60CA\\559C\\FF09\\FF082161\\FF09');";
         entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.DELETE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.DELETE);
         assertThat(entry.getOldValues()).hasSize(2);
         assertThat(entry.getOldValues().get(0).getColumnName()).isEqualTo("C1");
         assertThat(entry.getOldValues().get(0).getColumnData())
@@ -348,7 +347,7 @@ public void testParsingDoubleSingleQuoteInWhereClause() throws Exception {
 
         String sql = "insert into \"DEBEZIUM\".\"TEST\"(\"COL1\",\"COL2\") values ('Bob''s dog','0');";
         LogMinerDmlEntry entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.CREATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.INSERT);
         assertThat(entry.getOldValues()).isEmpty();
         assertThat(entry.getNewValues()).hasSize(2);
         assertThat(entry.getNewValues().get(0).getColumnName()).isEqualTo("COL1");
@@ -358,7 +357,7 @@ public void testParsingDoubleSingleQuoteInWhereClause() throws Exception {
 
         sql = "update \"DEBEZIUM\".\"TEST\" set \"COL2\" = '1' where \"COL1\" = 'Bob''s dog' and \"COL2\" = '0';";
         entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.UPDATE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.UPDATE);
         assertThat(entry.getOldValues()).hasSize(2);
         assertThat(entry.getOldValues().get(0).getColumnName()).isEqualTo("COL1");
         assertThat(entry.getOldValues().get(0).getColumnData()).isEqualTo("Bob''s dog");
@@ -372,7 +371,7 @@ public void testParsingDoubleSingleQuoteInWhereClause() throws Exception {
 
         sql = "delete from \"DEBEZIUM\".\"TEST\" where \"COL1\" = 'Bob''s dog' and \"COL2\" = '1';";
         entry = fastDmlParser.parse(sql, table, null);
-        assertThat(entry.getCommandType()).isEqualTo(Operation.DELETE);
+        assertThat(entry.getOperation()).isEqualTo(RowMapper.DELETE);
         assertThat(entry.getOldValues()).hasSize(2);
         assertThat(entry.getOldValues().get(0).getColumnName()).isEqualTo("COL1");
         assertThat(entry.getOldValues().get(0).getColumnData()).isEqualTo("Bob''s dog");

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/logminer/OracleDmlParserTest.java

@@ -36,7 +36,6 @@
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerColumnValue;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
 import io.debezium.connector.oracle.util.TestHelper;
-import io.debezium.data.Envelope;
 import io.debezium.doc.FixFor;
 import io.debezium.relational.Table;
 import io.debezium.relational.TableId;
@@ -275,7 +274,7 @@ public void shouldParseUpdateNoChangesTable() throws Exception {
                 "and COL8 = TO_TIMESTAMP('2019-05-14 02:28:32') and col11 = " + SPATIAL_DATA + ";";
 
         LogMinerDmlEntry record = sqlDmlParser.parse(dml, tables.forTable(TABLE_ID), "");
-        boolean pass = record.getCommandType().equals(Envelope.Operation.UPDATE)
+        boolean pass = record.getOperation() == RowMapper.UPDATE
                 && record.getOldValues().size() == record.getNewValues().size()
                 && record.getNewValues().containsAll(record.getOldValues());
         assertThat(pass);
@@ -355,7 +354,7 @@ private void assertDmlParserException(String sql, DmlParser parser, Table table,
 
     private void verifyUpdate(LogMinerDmlEntry record, boolean checkGeometry, boolean checkOldValues, int oldValuesNumber) {
         // validate
-        assertThat(record.getCommandType()).isEqualTo(Envelope.Operation.UPDATE);
+        assertThat(record.getOperation()).isEqualTo(RowMapper.UPDATE);
         List<LogMinerColumnValue> newValues = record.getNewValues();
         assertThat(newValues.size()).isEqualTo(14);
         String concatenatedNames = newValues.stream().map(LogMinerColumnValue::getColumnName).collect(Collectors.joining());
@@ -462,7 +461,7 @@ private void verifyInsert(LogMinerDmlEntry record) {
         List<LogMinerColumnValue> oldValues = record.getOldValues();
         assertThat(oldValues.size()).isEqualTo(0);
 
-        assertThat(record.getCommandType()).isEqualTo(Envelope.Operation.CREATE);
+        assertThat(record.getOperation()).isEqualTo(RowMapper.INSERT);
 
         List<LogMinerColumnValue> newValues = record.getNewValues();
         assertThat(newValues.size()).isEqualTo(14);
@@ -483,7 +482,7 @@ private void verifyInsert(LogMinerDmlEntry record) {
     }
 
     private void verifyDelete(LogMinerDmlEntry record, boolean checkOldValues) {
-        assertThat(record.getCommandType()).isEqualTo(Envelope.Operation.DELETE);
+        assertThat(record.getOperation()).isEqualTo(RowMapper.DELETE);
         List<LogMinerColumnValue> newValues = record.getNewValues();
         assertThat(newValues.size()).isEqualTo(0);
 

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/logminer/SqlUtilsTest.java

@@ -33,10 +33,11 @@ public class SqlUtilsTest {
     public TestRule skipRule = new SkipTestDependingOnAdapterNameRule();
 
     private static final String LOG_MINER_CONTENT_QUERY_TEMPLATE = "SELECT SCN, SQL_REDO, OPERATION_CODE, TIMESTAMP, " +
-            "XID, CSF, TABLE_NAME, SEG_OWNER, OPERATION, USERNAME, ROW_ID, ROLLBACK " +
+            "XID, CSF, TABLE_NAME, SEG_OWNER, OPERATION, USERNAME, ROW_ID, ROLLBACK, SEQUENCE#, RS_ID, " +
+            "ORA_HASH(SCN||OPERATION||RS_ID||SEQUENCE#||RTRIM(SUBSTR(SQL_REDO,1,256))) " +
             "FROM V$LOGMNR_CONTENTS WHERE SCN > ? AND SCN <= ? AND ((" +
-            "OPERATION_CODE IN (5,34) AND USERNAME NOT IN ('SYS','SYSTEM','${user}') AND INFO NOT LIKE 'INTERNAL DDL%') " +
-            "OR (OPERATION_CODE IN (7,36)) " +
+            "OPERATION_CODE IN (5,9,10,11,29,34) AND USERNAME NOT IN ('SYS','SYSTEM','${user}') AND INFO NOT LIKE 'INTERNAL DDL%') " +
+            "OR (OPERATION_CODE IN (6,7,36)) " +
             "OR (OPERATION_CODE IN (1,2,3) " +
             "AND TABLE_NAME != '" + SqlUtils.LOGMNR_FLUSH_TABLE + "' " +
             "${systemTablePredicate}" +

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/logminer/TransactionalBufferTest.java

@@ -40,7 +40,6 @@
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntryImpl;
 import io.debezium.connector.oracle.util.TestHelper;
-import io.debezium.data.Envelope;
 import io.debezium.pipeline.DataChangeEvent;
 import io.debezium.pipeline.ErrorHandler;
 import io.debezium.pipeline.EventDispatcher;
@@ -65,7 +64,7 @@ public class TransactionalBufferTest {
     private static final TableId TABLE_ID = new TableId(TestHelper.SERVER_NAME, "DEBEZIUM", "TEST");
     private static final String ROW_ID = "AAABCD871DFAA";
     private static final String OTHER_ROW_ID = "BAABCD871DFAA";
-    private static final LogMinerDmlEntry DML_ENTRY = new LogMinerDmlEntryImpl(Envelope.Operation.CREATE, Collections.emptyList(), Collections.emptyList());
+    private static final LogMinerDmlEntry DML_ENTRY = new LogMinerDmlEntryImpl(RowMapper.INSERT, Collections.emptyList(), Collections.emptyList());
 
     private static final Configuration config = new Configuration() {
         @Override
@@ -227,6 +226,6 @@ public void testTransactionDump() {
     }
 
     private void registerDmlOperation(String txId, Scn scn, String rowId) {
-        transactionalBuffer.registerDmlOperation(RowMapper.INSERT, txId, scn, TABLE_ID, DML_ENTRY, Instant.now(), rowId);
+        transactionalBuffer.registerDmlOperation(RowMapper.INSERT, txId, scn, TABLE_ID, DML_ENTRY, Instant.now(), rowId, null, 0L);
     }
 }

debezium-connector-oracle/src/test/java/io/debezium/connector/oracle/logminer/ValueHolderTest.java

@@ -34,7 +34,6 @@
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntry;
 import io.debezium.connector.oracle.logminer.valueholder.LogMinerDmlEntryImpl;
 import io.debezium.connector.oracle.util.TestHelper;
-import io.debezium.data.Envelope;
 import io.debezium.relational.TableId;
 import io.debezium.relational.Tables;
 import io.debezium.util.IoUtil;
@@ -66,18 +65,18 @@ public void setUp() {
 
     @Test
     public void testValueHolders() throws Exception {
-        LogMinerColumnValue column1 = new LogMinerColumnValueImpl("COLUMN1", Types.NUMERIC);
+        LogMinerColumnValue column1 = new LogMinerColumnValueImpl("COLUMN1");
         assertThat(column1.equals(column1)).isTrue();
         assertThat(column1.equals(null)).isFalse();
         assertThat(new LogMinerColumnValueWrapper(column1).isProcessed()).isFalse();
 
         column1.setColumnData(new BigDecimal(5));
-        LogMinerColumnValue column2 = new LogMinerColumnValueImpl("COLUMN2", Types.VARCHAR);
+        LogMinerColumnValue column2 = new LogMinerColumnValueImpl("COLUMN2");
         column2.setColumnData("Text");
         List<LogMinerColumnValue> newValues = new ArrayList<>();
         newValues.add(column1);
         newValues.add(column2);
-        LogMinerDmlEntryImpl dmlEntryExpected = new LogMinerDmlEntryImpl(Envelope.Operation.CREATE, newValues, Collections.emptyList());
+        LogMinerDmlEntryImpl dmlEntryExpected = new LogMinerDmlEntryImpl(RowMapper.INSERT, newValues, Collections.emptyList());
         dmlEntryExpected.setTransactionId("transaction_id");
         dmlEntryExpected.setObjectName(TABLE_NAME);
         dmlEntryExpected.setObjectOwner(SCHEMA_NAME);
@@ -91,7 +90,7 @@ public void testValueHolders() throws Exception {
         LogMinerDmlEntry dmlEntryParsed = sqlDmlParser.parse(dml, tables.forTable(TABLE_ID), "1");
 
         assertThat(dmlEntryParsed.equals(dmlEntryExpected)).isTrue();
-        assertThat(dmlEntryExpected.getCommandType() == Envelope.Operation.CREATE).isTrue();
+        assertThat(dmlEntryExpected.getOperation()).isEqualTo(RowMapper.INSERT);
         assertThat(dmlEntryExpected.getScn().equals(SCN_ONE)).isTrue();
         assertThat(dmlEntryExpected.getSourceTime().equals(new Timestamp(1000))).isTrue();
         assertThat(dmlEntryExpected.getTransactionId().equals("transaction_id")).isTrue();

debezium-connector-oracle/src/test/resources/data/test_lob_data.json

@@ -0,0 +1,2339 @@
+[
+  {
+    "_id": "6081cb8b0665b19449a392c8",
+    "index": 0,
+    "guid": "bc60b7bf-db6e-4dc8-9703-a451523757b1",
+    "isActive": true,
+    "balance": "$3,706.43",
+    "picture": "http://placehold.it/32x32",
+    "age": 33,
+    "eyeColor": "green",
+    "name": {
+      "first": "Mccullough",
+      "last": "Church"
+    },
+    "company": "ZOGAK",
+    "email": "mccullough.church@zogak.com",
+    "phone": "+1 (847) 519-3021",
+    "address": "962 Varet Street, Helen, Iowa, 1780",
+    "about": "Aliqua laborum sunt duis sit culpa consectetur irure proident veniam consequat culpa adipisicing aute qui. Esse aliquip culpa adipisicing non sunt pariatur cupidatat nostrud excepteur id voluptate magna. Nulla laboris voluptate velit aute est Lorem sit consequat commodo. Anim magna eiusmod sunt dolore officia proident cupidatat elit aute adipisicing officia consectetur amet Lorem. Laboris est labore aute magna amet fugiat voluptate labore. Dolor eiusmod magna qui commodo ullamco. Laboris ea velit anim dolore consectetur aute sit.",
+    "registered": "Monday, April 11, 2016 12:03 PM",
+    "latitude": "87.61937",
+    "longitude": "-21.610011",
+    "tags": [
+      "eu",
+      "est",
+      "aliqua",
+      "nostrud",
+      "nisi"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Pittman Carroll"
+      },
+      {
+        "id": 1,
+        "name": "Bernadine Salazar"
+      },
+      {
+        "id": 2,
+        "name": "Misty Alexander"
+      }
+    ],
+    "greeting": "Hello, Mccullough! You have 9 unread messages.",
+    "favoriteFruit": "apple"
+  },
+  {
+    "_id": "6081cb8b3fe5da60ff3fbe26",
+    "index": 1,
+    "guid": "c25d3af0-fd20-47b4-9999-0dfb746c4050",
+    "isActive": true,
+    "balance": "$3,025.93",
+    "picture": "http://placehold.it/32x32",
+    "age": 37,
+    "eyeColor": "green",
+    "name": {
+      "first": "Becker",
+      "last": "Aguilar"
+    },
+    "company": "EPLOSION",
+    "email": "becker.aguilar@eplosion.biz",
+    "phone": "+1 (956) 543-2662",
+    "address": "533 Tapscott Street, Camptown, Arkansas, 9088",
+    "about": "Anim anim deserunt consequat adipisicing sunt et. Mollit ex ut consectetur irure velit enim eiusmod elit et esse nisi. Magna aliqua ullamco elit tempor eu fugiat sit nulla. Et deserunt mollit occaecat minim aliquip.",
+    "registered": "Wednesday, October 16, 2019 8:48 AM",
+    "latitude": "-83.80244",
+    "longitude": "-73.061613",
+    "tags": [
+      "ad",
+      "et",
+      "cupidatat",
+      "magna",
+      "occaecat"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Stephens Cain"
+      },
+      {
+        "id": 1,
+        "name": "Marquita Ewing"
+      },
+      {
+        "id": 2,
+        "name": "Parker Padilla"
+      }
+    ],
+    "greeting": "Hello, Becker! You have 8 unread messages.",
+    "favoriteFruit": "banana"
+  },
+  {
+    "_id": "6081cb8bb2fa88cf9e55cf4c",
+    "index": 2,
+    "guid": "f80f62d2-28ab-443d-abf2-fdcf0d77bdd5",
+    "isActive": false,
+    "balance": "$2,568.00",
+    "picture": "http://placehold.it/32x32",
+    "age": 30,
+    "eyeColor": "green",
+    "name": {
+      "first": "Carter",
+      "last": "Fletcher"
+    },
+    "company": "GRAINSPOT",
+    "email": "carter.fletcher@grainspot.biz",
+    "phone": "+1 (925) 460-2087",
+    "address": "157 Hoyts Lane, Lindcove, Nevada, 3328",
+    "about": "Aliquip irure esse minim officia non eiusmod veniam culpa ipsum quis dolore aute. Sunt nisi elit proident aute velit proident sunt excepteur consequat aliqua. Qui duis eu sint est nostrud aute consectetur. Ullamco laboris sint tempor ullamco tempor aliqua laborum ullamco do.",
+    "registered": "Monday, August 14, 2017 8:43 AM",
+    "latitude": "-42.276593",
+    "longitude": "-97.520934",
+    "tags": [
+      "ea",
+      "consequat",
+      "ea",
+      "ea",
+      "laborum"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Cathleen Acosta"
+      },
+      {
+        "id": 1,
+        "name": "Marilyn Townsend"
+      },
+      {
+        "id": 2,
+        "name": "Fletcher Hines"
+      }
+    ],
+    "greeting": "Hello, Carter! You have 6 unread messages.",
+    "favoriteFruit": "apple"
+  },
+  {
+    "_id": "6081cb8b902c09516716d08f",
+    "index": 3,
+    "guid": "13e2f920-cf7c-4f13-818f-a63e359d7ffe",
+    "isActive": false,
+    "balance": "$3,594.25",
+    "picture": "http://placehold.it/32x32",
+    "age": 39,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Jayne",
+      "last": "Woodard"
+    },
+    "company": "AMRIL",
+    "email": "jayne.woodard@amril.ca",
+    "phone": "+1 (843) 497-2710",
+    "address": "636 Sands Street, Kilbourne, Ohio, 3036",
+    "about": "In fugiat non consequat cupidatat esse in qui consectetur pariatur officia qui irure labore veniam. Dolore laboris in laboris quis cupidatat mollit velit. Labore laboris eiusmod consequat tempor occaecat consectetur. Laborum et consequat tempor enim enim voluptate aliquip magna qui incididunt incididunt mollit. Mollit ipsum exercitation minim nulla eu irure eiusmod consequat duis ullamco est excepteur cillum cupidatat. Reprehenderit commodo magna magna consectetur quis laboris labore dolor fugiat eu. Officia velit esse amet reprehenderit Lorem excepteur incididunt aliqua exercitation laborum sunt consectetur laborum labore.",
+    "registered": "Sunday, December 16, 2018 7:11 PM",
+    "latitude": "74.441768",
+    "longitude": "70.387747",
+    "tags": [
+      "duis",
+      "cillum",
+      "dolore",
+      "sint",
+      "aliqua"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Marcy Hernandez"
+      },
+      {
+        "id": 1,
+        "name": "Bessie Gonzales"
+      },
+      {
+        "id": 2,
+        "name": "Catalina Hoover"
+      }
+    ],
+    "greeting": "Hello, Jayne! You have 7 unread messages.",
+    "favoriteFruit": "strawberry"
+  },
+  {
+    "_id": "6081cb8bbf29df52eafa1db2",
+    "index": 4,
+    "guid": "8f20052c-0bdf-4d06-8e91-41be93be31a4",
+    "isActive": true,
+    "balance": "$2,988.33",
+    "picture": "http://placehold.it/32x32",
+    "age": 39,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Camille",
+      "last": "Cote"
+    },
+    "company": "DEVILTOE",
+    "email": "camille.cote@deviltoe.tv",
+    "phone": "+1 (889) 470-2770",
+    "address": "593 McKinley Avenue, Fivepointville, North Carolina, 3750",
+    "about": "Ad commodo magna exercitation elit voluptate voluptate nulla ea. Nisi magna adipisicing dolore exercitation cillum quis quis elit. Dolore voluptate quis non ut magna quis minim duis do. Duis est excepteur ut et irure aliquip magna mollit aliquip qui duis cillum laboris aliquip.",
+    "registered": "Saturday, February 24, 2018 6:06 AM",
+    "latitude": "-9.823305",
+    "longitude": "148.116816",
+    "tags": [
+      "eu",
+      "mollit",
+      "amet",
+      "ex",
+      "irure"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Tanner Faulkner"
+      },
+      {
+        "id": 1,
+        "name": "Hickman Moon"
+      },
+      {
+        "id": 2,
+        "name": "Harriett Joyner"
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+    "about": "Deserunt adipisicing incididunt occaecat elit. Adipisicing cillum est magna quis sint quis aliqua amet in minim dolor incididunt mollit. Exercitation enim aute velit laboris ex minim esse et laborum cillum tempor sunt. Incididunt esse eu aliquip labore fugiat eiusmod elit ullamco velit aute ullamco. Et minim nisi voluptate ut nostrud labore. Nostrud culpa consectetur fugiat minim eu in enim ipsum eiusmod et laboris. Tempor officia tempor tempor proident dolor voluptate exercitation commodo velit quis fugiat sint duis et.",
+    "registered": "Monday, November 28, 2016 2:22 PM",
+    "latitude": "37.542052",
+    "longitude": "164.708052",
+    "tags": [
+      "est",
+      "ex",
+      "adipisicing",
+      "officia",
+      "non"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Gabrielle Mejia"
+      },
+      {
+        "id": 1,
+        "name": "Ray Bartlett"
+      },
+      {
+        "id": 2,
+        "name": "Susana Trujillo"
+      }
+    ],
+    "greeting": "Hello, Terri! You have 10 unread messages.",
+    "favoriteFruit": "strawberry"
+  }
+]

debezium-connector-oracle/src/test/resources/data/test_lob_data2.json

@@ -0,0 +1,1655 @@
+[
+  {
+    "_id": "6081ce6acf61f83263bb83a1",
+    "index": 0,
+    "guid": "5777e5c0-586a-4e97-affd-495e3e82085f",
+    "isActive": true,
+    "balance": "$3,308.69",
+    "picture": "http://placehold.it/32x32",
+    "age": 30,
+    "eyeColor": "green",
+    "name": {
+      "first": "Bond",
+      "last": "Carney"
+    },
+    "company": "DATACATOR",
+    "email": "bond.carney@datacator.io",
+    "phone": "+1 (980) 405-2647",
+    "address": "828 Commercial Street, Snyderville, Tennessee, 9840",
+    "about": "按时间先后进行排序 Ipsum eiusmod ad pariatur aute amet dolore eiusmod fugiat. Ex deserunt pariatur aliqua consectetur id non ullamco ut consectetur consectetur nostrud est amet. Occaecat nisi officia anim duis veniam anim dolore incididunt proident ea in ullamco. Eu quis excepteur et sint cupidatat eiusmod esse. Ea in ex tempor irure est. Anim et aute anim aute cillum mollit duis ullamco officia irure nostrud nulla. Nulla enim magna eiusmod eiusmod irure nulla esse dolore pariatur non laborum.",
+    "registered": "Thursday, November 12, 2015 10:10 AM",
+    "latitude": "12.52655",
+    "longitude": "17.161964",
+    "tags": [
+      "nulla",
+      "ex",
+      "Lorem",
+      "fugiat",
+      "velit"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Smith Ayers"
+      },
+      {
+        "id": 1,
+        "name": "Valentine Whitley"
+      },
+      {
+        "id": 2,
+        "name": "Leona Stout"
+      }
+    ],
+    "greeting": "Hello, Bond! You have 7 unread messages.",
+    "favoriteFruit": "apple"
+  },
+  {
+    "_id": "6081ce6aa0248fd3377c4dcf",
+    "index": 1,
+    "guid": "ffe82f9a-0240-4966-99ae-85a70e631411",
+    "isActive": false,
+    "balance": "$1,055.74",
+    "picture": "http://placehold.it/32x32",
+    "age": 28,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Glenna",
+      "last": "Kaufman"
+    },
+    "company": "GEEKWAGON",
+    "email": "glenna.kaufman@geekwagon.me",
+    "phone": "+1 (951) 583-2667",
+    "address": "848 Cleveland Street, Brantleyville, Alaska, 8255",
+    "about": "Ut ullamco veniam dolore do eu enim dolor incididunt magna labore esse laboris. Labore in ipsum amet cupidatat sit occaecat velit mollit eiusmod id fugiat occaecat. Labore deserunt ad incididunt sit ea velit magna officia ex.",
+    "registered": "Wednesday, December 16, 2015 11:18 AM",
+    "latitude": "64.346624",
+    "longitude": "-26.840163",
+    "tags": [
+      "dolor",
+      "elit",
+      "magna",
+      "dolore",
+      "nisi"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Powell Mccullough"
+      },
+      {
+        "id": 1,
+        "name": "Nelda Chen"
+      },
+      {
+        "id": 2,
+        "name": "Rachelle Dillard"
+      }
+    ],
+    "greeting": "Hello, Glenna! You have 7 unread messages.",
+    "favoriteFruit": "apple"
+  },
+  {
+    "_id": "6081ce6ae3a83136741ad238",
+    "index": 2,
+    "guid": "49cdc238-5d64-44b1-a1b2-5b22915ba8c7",
+    "isActive": false,
+    "balance": "$1,233.64",
+    "picture": "http://placehold.it/32x32",
+    "age": 36,
+    "eyeColor": "green",
+    "name": {
+      "first": "Margo",
+      "last": "Wolf"
+    },
+    "company": "OMATOM",
+    "email": "margo.wolf@omatom.org",
+    "phone": "+1 (882) 581-2606",
+    "address": "635 McKibben Street, Templeton, Florida, 412",
+    "about": "Consequat ipsum ut voluptate ullamco velit cillum do ullamco. Incididunt anim sunt amet occaecat. Incididunt magna eu et id culpa do sit velit nulla ea deserunt. Dolor veniam ipsum officia sint velit tempor quis consectetur dolor exercitation duis ea. Ullamco in adipisicing officia nisi. Incididunt cupidatat magna voluptate occaecat cupidatat commodo aliqua.",
+    "registered": "Monday, January 4, 2016 1:49 AM",
+    "latitude": "15.039771",
+    "longitude": "-90.075062",
+    "tags": [
+      "anim",
+      "sit",
+      "officia",
+      "incididunt",
+      "duis"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Kinney Carroll"
+      },
+      {
+        "id": 1,
+        "name": "Beth Sawyer"
+      },
+      {
+        "id": 2,
+        "name": "Latasha Valentine"
+      }
+    ],
+    "greeting": "Hello, Margo! You have 10 unread messages.",
+    "favoriteFruit": "banana"
+  },
+  {
+    "_id": "6081ce6a2f63014fcc038a16",
+    "index": 3,
+    "guid": "09d096f7-ea67-4eee-b072-436b5a237c59",
+    "isActive": false,
+    "balance": "$2,708.88",
+    "picture": "http://placehold.it/32x32",
+    "age": 31,
+    "eyeColor": "green",
+    "name": {
+      "first": "Hancock",
+      "last": "Sykes"
+    },
+    "company": "COMVERGES",
+    "email": "hancock.sykes@comverges.info",
+    "phone": "+1 (925) 448-2400",
+    "address": "184 Locust Avenue, Coaldale, New Hampshire, 2936",
+    "about": "Aliquip veniam amet consequat ex in occaecat. Consequat tempor cupidatat sunt aute Lorem aliquip occaecat do nisi adipisicing et. Ex duis ad et eiusmod consequat sit excepteur ut.",
+    "registered": "Thursday, December 18, 2014 1:28 PM",
+    "latitude": "-73.389766",
+    "longitude": "149.77773",
+    "tags": [
+      "reprehenderit",
+      "nostrud",
+      "sunt",
+      "duis",
+      "aute"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Kim Le"
+      },
+      {
+        "id": 1,
+        "name": "Debra Hampton"
+      },
+      {
+        "id": 2,
+        "name": "Blanca Burks"
+      }
+    ],
+    "greeting": "Hello, Hancock! You have 5 unread messages.",
+    "favoriteFruit": "strawberry"
+  },
+  {
+    "_id": "6081ce6a009368407e589218",
+    "index": 4,
+    "guid": "0c99c353-d266-4877-b3af-676380242b62",
+    "isActive": false,
+    "balance": "$1,605.80",
+    "picture": "http://placehold.it/32x32",
+    "age": 28,
+    "eyeColor": "blue",
+    "name": {
+      "first": "Norris",
+      "last": "Brady"
+    },
+    "company": "TERRAGEN",
+    "email": "norris.brady@terragen.ca",
+    "phone": "+1 (843) 541-3555",
+    "address": "591 Putnam Avenue, Escondida, California, 4965",
+    "about": "Voluptate tempor ullamco exercitation reprehenderit in veniam. Veniam amet quis amet tempor do ipsum officia dolore eu exercitation sit consequat aliquip veniam. Reprehenderit non excepteur reprehenderit sint officia. Ut dolore cupidatat duis sint eu laborum in enim officia eu. Sunt exercitation pariatur sint officia eu dolor minim ut quis nisi.",
+    "registered": "Saturday, March 3, 2018 5:35 AM",
+    "latitude": "-70.618492",
+    "longitude": "-91.542494",
+    "tags": [
+      "ipsum",
+      "qui",
+      "sunt",
+      "dolor",
+      "cupidatat"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Huff Terry"
+      },
+      {
+        "id": 1,
+        "name": "Bowman Padilla"
+      },
+      {
+        "id": 2,
+        "name": "Jerry Collier"
+      }
+    ],
+    "greeting": "Hello, Norris! You have 10 unread messages.",
+    "favoriteFruit": "banana"
+  },
+  {
+    "_id": "6081ce6a3f97c1c5c2d444a9",
+    "index": 5,
+    "guid": "96e6071e-c321-4068-825b-b9005138fc8d",
+    "isActive": true,
+    "balance": "$2,777.15",
+    "picture": "http://placehold.it/32x32",
+    "age": 35,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Luz",
+      "last": "Dotson"
+    },
+    "company": "POSHOME",
+    "email": "luz.dotson@poshome.name",
+    "phone": "+1 (905) 564-3120",
+    "address": "288 Maujer Street, Temperanceville, Wyoming, 9214",
+    "about": "Nostrud tempor exercitation tempor Lorem aliqua Lorem aute. Sunt nulla dolore ullamco eiusmod cillum in eu. Ex reprehenderit velit qui id qui incididunt dolore est Lorem non. Tempor occaecat eiusmod ipsum ex Lorem laboris tempor non ad ad sunt sint. Laboris est occaecat dolor do velit enim laborum. Aute ad excepteur excepteur eu. Id aliqua cupidatat aliqua proident voluptate eu labore aliqua ex duis incididunt proident esse ut.",
+    "registered": "Sunday, January 3, 2021 11:13 AM",
+    "latitude": "-34.196073",
+    "longitude": "75.503513",
+    "tags": [
+      "ullamco",
+      "enim",
+      "consectetur",
+      "magna",
+      "voluptate"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Bartlett Hartman"
+      },
+      {
+        "id": 1,
+        "name": "Candace Sherman"
+      },
+      {
+        "id": 2,
+        "name": "Burch Rice"
+      }
+    ],
+    "greeting": "Hello, Luz! You have 5 unread messages.",
+    "favoriteFruit": "apple"
+  },
+  {
+    "_id": "6081ce6a8098b10fdcdcd320",
+    "index": 6,
+    "guid": "9b919a1f-ad9d-4c4d-ad12-9b1a9208b152",
+    "isActive": false,
+    "balance": "$1,928.24",
+    "picture": "http://placehold.it/32x32",
+    "age": 31,
+    "eyeColor": "green",
+    "name": {
+      "first": "Bridges",
+      "last": "Mckee"
+    },
+    "company": "MAKINGWAY",
+    "email": "bridges.mckee@makingway.tv",
+    "phone": "+1 (976) 506-3536",
+    "address": "424 Apollo Street, Smeltertown, Hawaii, 8334",
+    "about": "Adipisicing veniam officia minim duis aute duis aliqua culpa fugiat consequat dolore do. Eiusmod cupidatat tempor in ea mollit ullamco consectetur. Nisi quis qui sit proident aute ullamco id pariatur. Velit eiusmod qui eu cillum proident anim qui. Est ad dolor mollit ea proident eiusmod eiusmod ullamco proident. Culpa adipisicing cupidatat et sit aliquip incididunt veniam aliquip adipisicing ut aliquip aute eu est. Tempor ullamco labore quis exercitation occaecat in elit excepteur.",
+    "registered": "Thursday, April 27, 2017 10:02 PM",
+    "latitude": "54.274178",
+    "longitude": "2.449225",
+    "tags": [
+      "est",
+      "id",
+      "sint",
+      "occaecat",
+      "eu"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Gaines Newton"
+      },
+      {
+        "id": 1,
+        "name": "William Mendoza"
+      },
+      {
+        "id": 2,
+        "name": "Liz Stanley"
+      }
+    ],
+    "greeting": "Hello, Bridges! You have 10 unread messages.",
+    "favoriteFruit": "strawberry"
+  },
+  {
+    "_id": "6081ce6ac6e8953e602a2ac2",
+    "index": 7,
+    "guid": "27845f3f-8fda-4040-a84d-a3ce423657fb",
+    "isActive": true,
+    "balance": "$2,980.64",
+    "picture": "http://placehold.it/32x32",
+    "age": 24,
+    "eyeColor": "green",
+    "name": {
+      "first": "Short",
+      "last": "Hebert"
+    },
+    "company": "ANIMALIA",
+    "email": "short.hebert@animalia.net",
+    "phone": "+1 (949) 546-3885",
+    "address": "980 Guider Avenue, Roland, Virgin Islands, 5496",
+    "about": "Non velit laboris incididunt duis adipisicing voluptate est Lorem laboris magna minim adipisicing. Officia culpa pariatur sint deserunt excepteur cillum ipsum commodo excepteur adipisicing. Commodo mollit proident aliqua ullamco tempor do aute. Enim duis fugiat fugiat ex excepteur sunt deserunt nisi occaecat consectetur. Amet exercitation ex cupidatat aute exercitation culpa ad occaecat occaecat qui duis est.",
+    "registered": "Saturday, March 12, 2016 9:14 AM",
+    "latitude": "-75.343149",
+    "longitude": "43.853993",
+    "tags": [
+      "proident",
+      "culpa",
+      "laboris",
+      "est",
+      "dolor"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Hazel Maynard"
+      },
+      {
+        "id": 1,
+        "name": "Ava Williams"
+      },
+      {
+        "id": 2,
+        "name": "Emily Harrison"
+      }
+    ],
+    "greeting": "Hello, Short! You have 6 unread messages.",
+    "favoriteFruit": "banana"
+  },
+  {
+    "_id": "6081ce6a3b361dd7bd64e6c8",
+    "index": 8,
+    "guid": "fbaf20d2-f1df-4314-a63b-35d2c8912f01",
+    "isActive": true,
+    "balance": "$1,053.16",
+    "picture": "http://placehold.it/32x32",
+    "age": 31,
+    "eyeColor": "green",
+    "name": {
+      "first": "Elsa",
+      "last": "Boyle"
+    },
+    "company": "PLUTORQUE",
+    "email": "elsa.boyle@plutorque.co.uk",
+    "phone": "+1 (801) 553-3869",
+    "address": "957 Cheever Place, Allentown, Alabama, 6069",
+    "about": "Consectetur exercitation ad ex pariatur voluptate deserunt. Veniam eu do enim ea nisi irure cillum reprehenderit do sint. Id do amet consequat pariatur sunt mollit ipsum magna elit reprehenderit id. Sit culpa aliquip mollit anim deserunt. In proident eu aliqua consectetur voluptate aliqua enim duis. Aliquip reprehenderit consectetur incididunt cillum voluptate consequat officia amet do aute dolore ut ea id.",
+    "registered": "Sunday, October 12, 2014 6:07 PM",
+    "latitude": "57.837987",
+    "longitude": "-80.20426",
+    "tags": [
+      "et",
+      "occaecat",
+      "quis",
+      "nostrud",
+      "exercitation"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Mercer Lara"
+      },
+      {
+        "id": 1,
+        "name": "Tamika Melendez"
+      },
+      {
+        "id": 2,
+        "name": "Ofelia Moreno"
+      }
+    ],
+    "greeting": "Hello, Elsa! You have 7 unread messages.",
+    "favoriteFruit": "strawberry"
+  },
+  {
+    "_id": "6081ce6ae4b88b8e5d9abf23",
+    "index": 9,
+    "guid": "a65a8904-4f05-4aef-b8e3-a8207e44cec6",
+    "isActive": true,
+    "balance": "$3,640.90",
+    "picture": "http://placehold.it/32x32",
+    "age": 24,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Joan",
+      "last": "Townsend"
+    },
+    "company": "UXMOX",
+    "email": "joan.townsend@uxmox.us",
+    "phone": "+1 (835) 579-2679",
+    "address": "800 Metrotech Courtr, Greensburg, Vermont, 3593",
+    "about": "Irure incididunt deserunt officia fugiat quis ex cupidatat dolor sint veniam. Occaecat fugiat exercitation ad deserunt ad veniam in cillum magna consectetur Lorem proident. Do veniam nulla veniam ad tempor dolor minim dolore. Do aute nostrud quis tempor consequat pariatur reprehenderit exercitation amet nulla. Fugiat ex deserunt proident voluptate proident excepteur do sit. Anim dolore fugiat voluptate do deserunt ut nulla amet.",
+    "registered": "Tuesday, May 5, 2020 3:26 AM",
+    "latitude": "38.214051",
+    "longitude": "-5.297229",
+    "tags": [
+      "cupidatat",
+      "eu",
+      "excepteur",
+      "do",
+      "ea"
+    ],
+    "range": [
+      0,
+      1,
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+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Hutchinson Berg"
+      },
+      {
+        "id": 1,
+        "name": "Gloria Kramer"
+      },
+      {
+        "id": 2,
+        "name": "Shelia Benjamin"
+      }
+    ],
+    "greeting": "Hello, Joan! You have 9 unread messages.",
+    "favoriteFruit": "apple"
+  },
+  {
+    "_id": "6081ce6a48f0c3c826d9a566",
+    "index": 10,
+    "guid": "936ee7cb-c007-4d33-805d-57a23646a7b1",
+    "isActive": false,
+    "balance": "$1,235.66",
+    "picture": "http://placehold.it/32x32",
+    "age": 31,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Nina",
+      "last": "Lyons"
+    },
+    "company": "FUTURITY",
+    "email": "nina.lyons@futurity.com",
+    "phone": "+1 (973) 585-2174",
+    "address": "871 Woods Place, Wanship, New Jersey, 5451",
+    "about": "Aliqua in dolore deserunt proident anim officia quis occaecat cillum dolore. Ad culpa irure est laborum non nisi aliquip excepteur. Cupidatat consequat ea do tempor consequat nostrud pariatur est duis ad voluptate.",
+    "registered": "Saturday, February 10, 2018 7:41 AM",
+    "latitude": "57.974419",
+    "longitude": "153.080488",
+    "tags": [
+      "cupidatat",
+      "adipisicing",
+      "duis",
+      "culpa",
+      "magna"
+    ],
+    "range": [
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+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Walter Olsen"
+      },
+      {
+        "id": 1,
+        "name": "Autumn Wiley"
+      },
+      {
+        "id": 2,
+        "name": "Kris Dodson"
+      }
+    ],
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+    "guid": "1e25fe6e-a9b9-4bc1-888d-e14e47f9a4be",
+    "isActive": true,
+    "balance": "$3,594.99",
+    "picture": "http://placehold.it/32x32",
+    "age": 33,
+    "eyeColor": "blue",
+    "name": {
+      "first": "Reynolds",
+      "last": "Baldwin"
+    },
+    "company": "CODAX",
+    "email": "reynolds.baldwin@codax.biz",
+    "phone": "+1 (981) 466-3234",
+    "address": "128 Cherry Street, Kula, Palau, 2987",
+    "about": "Sit esse velit esse culpa labore consequat voluptate anim cupidatat labore Lorem. Proident aliqua fugiat elit deserunt do incididunt. Adipisicing ut ut nisi ullamco et Lorem irure. Sint est ex sit deserunt proident laboris et quis irure ex. Anim id nisi fugiat laboris qui.",
+    "registered": "Tuesday, July 30, 2019 6:27 AM",
+    "latitude": "-44.543732",
+    "longitude": "168.787532",
+    "tags": [
+      "pariatur",
+      "minim",
+      "culpa",
+      "incididunt",
+      "excepteur"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Twila Mclean"
+      },
+      {
+        "id": 1,
+        "name": "Vicki Slater"
+      },
+      {
+        "id": 2,
+        "name": "Park Potter"
+      }
+    ],
+    "greeting": "Hello, Reynolds! You have 7 unread messages.",
+    "favoriteFruit": "banana"
+  },
+  {
+    "_id": "6081ce6a6527c3341bce9aa0",
+    "index": 24,
+    "guid": "b8e88ab2-38c9-425b-9a67-b8f0aab7738f",
+    "isActive": true,
+    "balance": "$3,065.93",
+    "picture": "http://placehold.it/32x32",
+    "age": 28,
+    "eyeColor": "green",
+    "name": {
+      "first": "Burton",
+      "last": "Lane"
+    },
+    "company": "MALATHION",
+    "email": "burton.lane@malathion.io",
+    "phone": "+1 (976) 579-2140",
+    "address": "756 Sandford Street, Vernon, Louisiana, 2798",
+    "about": "Quis mollit ea consequat deserunt cupidatat qui sit tempor ipsum cillum amet culpa deserunt consequat. Aliquip deserunt ea do consequat aute qui do elit minim id sint magna nulla. Minim velit ut veniam incididunt esse ipsum.",
+    "registered": "Tuesday, March 25, 2014 11:29 PM",
+    "latitude": "14.53458",
+    "longitude": "71.625027",
+    "tags": [
+      "amet",
+      "fugiat",
+      "duis",
+      "mollit",
+      "Lorem"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Penelope Turner"
+      },
+      {
+        "id": 1,
+        "name": "Adrienne Nielsen"
+      },
+      {
+        "id": 2,
+        "name": "Shawna Daniel"
+      }
+    ],
+    "greeting": "Hello, Burton! You have 10 unread messages.",
+    "favoriteFruit": "banana"
+  },
+  {
+    "_id": "6081ce6a84d0d39417c83d32",
+    "index": 25,
+    "guid": "ece6e71d-d318-4e9b-8e68-a5c0a88f1216",
+    "isActive": true,
+    "balance": "$2,489.87",
+    "picture": "http://placehold.it/32x32",
+    "age": 31,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Diann",
+      "last": "Snider"
+    },
+    "company": "APEX",
+    "email": "diann.snider@apex.me",
+    "phone": "+1 (877) 509-3935",
+    "address": "788 Court Square, Navarre, Guam, 2764",
+    "about": "Qui cillum consectetur amet dolor consequat. Incididunt exercitation ipsum et anim non deserunt sit fugiat et amet. Elit eu laborum duis minim dolor velit irure irure officia. Mollit exercitation dolore adipisicing culpa consectetur aliquip ex proident culpa aliquip magna dolore ullamco. Occaecat do duis magna id consectetur. Et adipisicing aliqua sint qui sint eiusmod magna consectetur pariatur quis magna id id enim. Pariatur proident consectetur cillum exercitation dolor cupidatat pariatur.",
+    "registered": "Saturday, October 31, 2015 4:54 PM",
+    "latitude": "-51.144368",
+    "longitude": "3.183612",
+    "tags": [
+      "ipsum",
+      "cupidatat",
+      "reprehenderit",
+      "aute",
+      "eiusmod"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Dennis Glenn"
+      },
+      {
+        "id": 1,
+        "name": "Julie Murphy"
+      },
+      {
+        "id": 2,
+        "name": "Adela Love"
+      }
+    ],
+    "greeting": "Hello, Diann! You have 9 unread messages.",
+    "favoriteFruit": "apple"
+  },
+  {
+    "_id": "6081ce6ae0ce4e80c6a2a13c",
+    "index": 26,
+    "guid": "c94fd661-018f-4885-9236-eed76a5c0bef",
+    "isActive": false,
+    "balance": "$1,921.97",
+    "picture": "http://placehold.it/32x32",
+    "age": 26,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Wilkinson",
+      "last": "Miranda"
+    },
+    "company": "COMDOM",
+    "email": "wilkinson.miranda@comdom.org",
+    "phone": "+1 (963) 506-2021",
+    "address": "352 Cumberland Walk, Nash, Montana, 2381",
+    "about": "Dolore consectetur in deserunt veniam sit tempor irure. Lorem nisi incididunt deserunt ea do laborum fugiat deserunt pariatur do non. Culpa exercitation elit sunt sit mollit mollit esse non enim ad veniam. Sit culpa nisi laboris officia. Minim ut cillum aliquip in. Pariatur in nostrud deserunt elit sunt aliquip tempor enim. Exercitation minim irure occaecat mollit nisi aute consectetur irure sunt pariatur reprehenderit proident excepteur aute.",
+    "registered": "Thursday, September 5, 2019 12:55 PM",
+    "latitude": "-8.923973",
+    "longitude": "103.864233",
+    "tags": [
+      "tempor",
+      "sunt",
+      "ad",
+      "culpa",
+      "in"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Schultz Harmon"
+      },
+      {
+        "id": 1,
+        "name": "Jennie Lawson"
+      },
+      {
+        "id": 2,
+        "name": "Sonia Pitts"
+      }
+    ],
+    "greeting": "Hello, Wilkinson! You have 6 unread messages.",
+    "favoriteFruit": "strawberry"
+  },
+  {
+    "_id": "6081ce6a968c369422ad6680",
+    "index": 27,
+    "guid": "b53d6221-893f-4ebd-bad2-5342b21283cf",
+    "isActive": false,
+    "balance": "$3,882.62",
+    "picture": "http://placehold.it/32x32",
+    "age": 40,
+    "eyeColor": "brown",
+    "name": {
+      "first": "Teri",
+      "last": "Vance"
+    },
+    "company": "CYTRAK",
+    "email": "teri.vance@cytrak.info",
+    "phone": "+1 (936) 523-2573",
+    "address": "404 Porter Avenue, Washington, Missouri, 8789",
+    "about": "Duis laboris consectetur proident veniam quis nostrud incididunt. Aute id qui ad fugiat est. Ullamco aute ex qui laboris commodo nostrud ea occaecat sunt exercitation aliquip aute proident. Non occaecat ad exercitation cillum esse nisi excepteur laborum esse enim ex et adipisicing officia.",
+    "registered": "Thursday, July 2, 2020 8:48 PM",
+    "latitude": "-67.491848",
+    "longitude": "-36.49362",
+    "tags": [
+      "fugiat",
+      "excepteur",
+      "nisi",
+      "incididunt",
+      "tempor"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Lacy Miller"
+      },
+      {
+        "id": 1,
+        "name": "Tabatha Patterson"
+      },
+      {
+        "id": 2,
+        "name": "Doris Medina"
+      }
+    ],
+    "greeting": "Hello, Teri! You have 10 unread messages.",
+    "favoriteFruit": "strawberry"
+  },
+  {
+    "_id": "6081ce6a35e6ac4ab2785a69",
+    "index": 28,
+    "guid": "e19dba91-56fb-4c7d-8f14-7d0db8b7aa13",
+    "isActive": true,
+    "balance": "$3,771.21",
+    "picture": "http://placehold.it/32x32",
+    "age": 25,
+    "eyeColor": "green",
+    "name": {
+      "first": "Rodgers",
+      "last": "Paul"
+    },
+    "company": "EXOTERIC",
+    "email": "rodgers.paul@exoteric.ca",
+    "phone": "+1 (809) 545-3089",
+    "address": "714 Bartlett Street, Beechmont, West Virginia, 8267",
+    "about": "Irure veniam consectetur consectetur et magna amet do voluptate sint incididunt qui. Tempor non eu commodo do do commodo ea laboris occaecat velit consequat aute labore. Culpa eiusmod ullamco elit non velit ea ea. Anim consequat excepteur adipisicing occaecat id mollit elit ullamco qui amet. Consectetur consectetur eu laborum laboris et in mollit sint laboris. Non dolor sit dolore velit et ut adipisicing ex velit laboris incididunt elit minim eu.",
+    "registered": "Saturday, June 4, 2016 12:25 AM",
+    "latitude": "-24.446516",
+    "longitude": "-170.047284",
+    "tags": [
+      "aute",
+      "quis",
+      "consequat",
+      "qui",
+      "ipsum"
+    ],
+    "range": [
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9
+    ],
+    "friends": [
+      {
+        "id": 0,
+        "name": "Maricela Goodman"
+      },
+      {
+        "id": 1,
+        "name": "Hanson Nichols"
+      },
+      {
+        "id": 2,
+        "name": "Hudson Obrien"
+      }
+    ],
+    "greeting": "Hello, Rodgers! You have 7 unread messages.",
+    "favoriteFruit": "banana"
+  }
+]

debezium-connector-oracle/src/test/resources/log4j.properties

@@ -15,4 +15,10 @@ log4j.logger.io.debezium.core=DEBUG
 log4j.logger.io.debezium.connector.oracle=DEBUG
 
 # Avoid the fallback property spam
-log4j.logger.io.debezium.config.Configuration=ERROR
+log4j.logger.io.debezium.config.Configuration=ERROR
+
+# Avoid writing converter configurations
+log4j.logger.org.apache.kafka.connect.json.JsonConverterConfig=WARN
+log4j.logger.io.confluent.connect.avro.AvroConverterConfig=WARN
+log4j.logger.io.confluent.kafka.serializers.KafkaAvroSerializerConfig=WARN
+log4j.logger.io.confluent.kafka.serializers.KafkaAvroDeserializerConfig=WARN