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DBZ-6970 Edit description for JDBC connector truncate.enabled property

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Bob Roldan 2023-10-19 23:16:19 -04:00 committed by Chris Cranford
parent 5c9870bcfa
commit b13a8d1bb1
1 changed files with 10 additions and 3 deletions
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documentation/modules/ROOT/pages/connectors/jdbc.adoc
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@ -694,12 +694,19 @@ Use of this option requires that you set the xref:jdbc-property-primary-key-mode
|[[jdbc-property-truncate-enabled]]<<jdbc-property-truncate-enabled, `+truncate.enabled+`>>
|`false`
|Specifies whether the connector processes `TRUNCATE` events and truncate the corresponding tables from the database.
|Specifies whether the connector processes `TRUNCATE` events and truncates the corresponding tables from the database.
[NOTE]
====
Currently, for some reason the `TRUNCATE` statement doesn't work for DB2 even if it is supported from link:https://www.ibm.com/support/pages/apar/JR37942/[9.7]. The problem verifies with Hibernate, plain JDBC works good.
Although support for `TRUNCATE` statements has been available in Db2 since link:https://www.ibm.com/support/pages/apar/JR37942/[version 9.7],
currently, the JDBC connector is unable to process standard `TRUNCATE` events that the Db2 connector emits.
Db2 dialects have to utilize `ALTER TABLE table_name ACTIVATE NOT LOGGED INITIALLY WITH EMPTY TABLE` statement instead of traditional `TRUNCATE TABLE` syntax, make sure grant related `ALTER` privileges to user account.
To ensure that the JDBC connector can process `TRUNCATE` events received from Db2, perform the truncation by using an alternative to the standard `TRUNCATE TABLE` statement.
For example:
`ALTER TABLE _<table_name>_ ACTIVATE NOT LOGGED INITIALLY WITH EMPTY TABLE`
The user account that submits the preceding query requires `ALTER` privileges on the table to be truncated.
====
|[[jdbc-property-insert-mode]]<<jdbc-property-insert-mode, `+insert.mode+`>>