Replication Agent for Oracle can be downgraded from version 15.5 to version 15.2 ESD #2. Downgrading may be necessary if the upgrade process fails. A downgrade may also be necessary if replication fails after the upgrade process has completed, if there are changes to DDL and how DDL is handled by Replication Agent, or if there are changes to the content or structure of the Replication Agent System Database (RASD).
If you are using any new features from Replication Agent 15.5, downgrading is not supported. For a list of the new features for Replication Agent 15.5, see the Replication Agent New Features.
