6.1.7. CDC Cleanup and Correction
In the event that the CDC tables have become corrupted, no longer work
correctly, or where you have changed the tables, users or other details in
your CDC configuration the CDC can be cleaned up. This deletes and
unsubscribes the existing CDC configuration so that the
setupCDC.sh script can be executed again with the
If setupCDC.sh returns an error that subscriptions
already exist, this SQL file will also cleanup this configuration in
preparation for running setupCDC.sh again.
To cleanup your existing configuration, an SQL script has been provided
tungsten-replicator/scripts directory as
cleanup_cdc_tables.sql for Oracle 11g, and
cleanup_cdc_tables-10.sql for Oracle 10.
To execute, login to Oracle with sqlplus with SYSDBA
sqlplus / as sysdba
The changeset name used by every Tungsten Replicator CDC installation is
followed by the service name configured in the CDC configuration file.
The name of the existing CDC publisher user and changeset should be
specified to ensure that the right subscriptions are cleaned up.
Once completed, setupCDC.sh can be executed again. See
Section 184.108.40.206, “Configure the Oracle database” for more information.