Maximum Availability: Recovery Appliance with Oracle Data Guard

Oracle Data Guard is a component of a high availability (HA) and disaster recovery solution that can be integrated with Recovery Appliance to provide maximum data protection. Oracle Data Guard minimizes service interruption and resulting data loss by maintaining a synchronized standby database for the protected database. When the primary system is unavailable, the standby immediately assumes the normal operations of the primary after a Data Guard failover operation, including backups to the local Recovery Appliance. Figure 1-10 shows an example of an environment with Recovery Appliance and Oracle Data Guard.

Figure 1-10 Recovery Appliance with Oracle Data Guard

Description of "Figure 1-10 Recovery Appliance with Oracle Data Guard"

In Figure 1-10, the primary and standby databases each send incremental backups to their local Recovery Appliance. The primary database sends real-time redo changes to both the local Recovery Appliance and the physical standby, and the standby cascades the redo changes to the remote Recovery Appliance. Each Recovery Appliance has backups and redo information for the same database, therefore either appliance can be used for RMAN restore and recovery operations.