You can now downgrade Replication Agent version 15.5 to version 15.2 ESD#2, keeping the accuracy of data intact. Downgrading to the previous version may be necessary in these scenarios:
When upgrading from a previous to a newer version of Replication Agent fails.
After upgrading to a newer version, you encounter issues during replication, if:
The OQID format has changed in the newer version. To switch back to the old format, Replication Agent must clear old activities from Replication Server® and increase the generation ID of the OQID, to prevent any rejection of new records or duplication of existing records from Replication Server.
The contents and structure of the Replication Agent repository has changed, preventing the earlier version from directly reusing the repository of the newer version.
Replication fails although some Data Manipulation Language (DML) operations have been replicated successfully and Data Definition Language (DDL) changes have occurred in the primary database.
For downgrading instructions and information on the new APIs that support downgrading, see Appendix A, “Upgrading and Downgrading Replication Agent” in the Replication Agent 15.5 Primary Database Guide and the Replication Agent 15.5 Reference Manual.
Configuration changes made after upgrade are not applied
to the downgraded version; you must reapply such changes. Sybase® recommends that
you apply the configuration changes only after the newer version
has been stabilized in your environment.
Downgrading is supported for these databases:
Oracle
Microsoft SQL Server
IBM DB2 UDB
To download Replication Agent 15.2 ESD#2, go
to the Sybase EBF download site.
