Live Sync Replication of Oracle RAC Databases
The Live Sync feature enables incremental replication from a backup of an Oracle RAC database to a synced copy of the Oracle RAC database. The Live Sync operation continuously applies changes from the source database backups since the last sync point.
You can use the Live Sync feature on databases that run Oracle Standard Editions.
The Live Sync feature performs the following procedures:
- Initiates the replication automatically after a backup is completed on the source database.
- Minimizes the impact on production systems CPU and I/O by using the backup data for replications. This method avoids the need to read the source database again for replication.
- Copies the backup data to remote disaster recovery (DR) sites with deduplication to minimize the wide area network (WAN) traffic. Live Sync then runs at the DR site.
- Supports the destination database sync in standby mode so that users can schedule workloads on the destination server.
- Initiates replication after the auxiliary copy completes, when you use a copy precedence for Live Sync.
If no new backups have been run since the last Live Sync, then the scheduled Live Sync does not run.
You can configure Live Sync to initiate replication automatically after backups or on a schedule.
If Oracle data is protected by multiple schedules or subclients, the software replicates the database from the subclient that has the most recent backup.
Use the following backup types to replicate Oracle RAC databases:
- Traditional backups
- Auxiliary copies
- Backup copies
Note: Do not perform IntelliSnap backups on the destination after a Live Sync operation. If a snapshot exists, then subsequent Live Sync operations fail.