The route version is the earliest site version of the source and destination Replication Server. After you upgrade the source and destination Replication Servers on either end of a route and also set their site versions to a higher Replication Server version, you need to upgrade the route. Upgrading the route allows the Replication Servers to exchange information about newer software features.
Upgrading a route rematerializes data in system tables, making information associated with new features available to a newly upgraded Replication Server. After upgrading, new types of information that were not previously allowed can be exchanged.
To display the current version number of routes that originate or terminate at a Replication Server, use the admin show_route_versions command.
Refer to Chapter 3, “Replication Server Commands,” in the Replication Server Reference Manual for complete syntax and usage information of admin show_route_versions command.
There are two possible scenarios for route upgrade:
If new features have not been used at the source Replication Server, use sysadmin fast_route_upgrade to upgrade routes.
In all other cases, use the commands route_upgrade, route_upgrade_recovery, and route_upgrade_status to upgrade routes.
You cannot downgrade a route after you have upgraded it.
See “Mixed-version replication systems” for more information about site versions and system versions.
See the installation and configuration guides for your platform for more information about upgrading routes and setting the site version for a Replication Server.
