Performing a forced or manual failover of the CDC Replication Engine for Db2® Database

A forced or manual failover is often necessary in a clustered environment for software upgrades, maintenance, or other reasons. The tasks in the following steps must be included in your manual failover script.

1. Stop all instances of CDC Replication on the current active node with the following command: dmshutdown -I <instance_name>
2. Manually failover your clustered environment with the scripts or procedures that are specific to your environment.
3. Restart all instances on the new active node with the following command: dmts64 - I <instance_name>
4. Start all subscriptions on the new active node with the dmstartmirror command.