The PowerCenter Repository Service manages the PowerCenter repository. It retrieves, inserts, and updates metadata in the repository database tables. If the service process fails or the node becomes unavailable, then the service becomes unavailable.
If you have the high availability option, you can configure the service to run on primary and backup nodes. By default, the service process runs on the primary node. If the service process fails, a new process starts on the same node. If the node becomes unavailable, a service process starts on one of the backup nodes.