The onbar-driver (onbar_d) communicates backup or restore requests to the Backup Scheduler on Extended Parallel Server. The Backup Scheduler tracks all active and scheduled backup and restore activities for all the coservers. The Backup Scheduler creates one or more sessions, each of which contains a list of objects to back up or restore. It starts onbar-worker processes to back up or restore the objects and coordinates the session activity. A session is a single backup or restore request.
For details, see Backup Sequence on Extended Parallel Server.
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