Draining the RSSD Transaction Log
Create a replication definition to manually drain the RSSD transaction log. This ensures that Replication Server processes all transactions in the RSSD log before you upgrade databases if Replication Server has routes to other Replication Servers.
Disabling the Secondary Truncation Point
Turn off the secondary truncation point for the duration of the upgrade and when you upgrade a primary database, the Replication Agent cannot be running.
Upgrading Adaptive Server
See the Adaptive Server Enterprise Installation Guide for upgrade instructions.