Scenario:
If Oracle RAC is implemented with DataGuard (no VERITAS solution is implemented) at Primary site and due to some reason (suppose power failure at Primary site) , the DR site need to online(need to execute failover from Primary to DR). Now the DR site Oracle data will come in read/write mode. When we need to fail back to Primary site (after some time when power restored) we have to re-replicate complete Oracle data from DR to Primary site instead of only changed data at DR site. Its a limitation from Oracle side. AS PER MY UNDERSTANDING
Queries:
1.a) Suppose if we have VERITAS HA/DR solution installed and configured with replication mechanism VVR with Oracle RAC at Primary Site. My assumption is we dont need to re-replicate complete Oracle data from DR site to Primary site and we can failback easily. Correct ?
1.b) Suppose if we have VERITAS HA/DR solution installed and configured but the replication mechanism is DataGuard instead of VVR with Oracle RAC at Primary Site. My assumption is we dont need to re-replicate complete Oracle data from DR site to Primary site and we can failback easily. Correct ?