Oracle Database 12c: RAC and Grid Infrastructure Administration — Question 90

You are monitoring your Data Guard broker configuration and issue this set of DGMGRL commands:

DGMGRL> SHOW CONFIGURATION -

Configuration DRSolution -

Protection Mode: MaxPerformance -
Databases:

Close_by-Primary database -

FS_inst- Far Sync -
Far_away Physical standby database

Fast-Start Failover: DISABLED -
Configuration Status:

SUCCESS -
What is true concerning this configuration?

Answer options

• A. The Close_by primary database instance forwards redo to the FS_inst Far Sync instance, which forwards the redo in turn to the Far_away physical standby database instance.
• B. The far sync instance will not forward redo to the Far_away physical standby because the Protection mode is not MaxProtection.
• C. The close_by primary database forwards redo to the Far_away physical standby directly and also sends redo to the FS_inst Far Sync instance.
• D. The far sync instance will not forward redo to the Far_away physical standby because Fast-Start Failover is disabled.
• E. The FS_inst Far Sync instance forwards redo to the Far_away physical standby only if the close_by primary database is not able to do so.

Correct answer: A

Explanation

The correct answer is A because in a Data Guard configuration with a Far Sync instance, the primary database sends redo to the Far Sync, which then forwards it to the physical standby. Option B is incorrect as the protection mode being MaxPerformance does not prevent the Far Sync from forwarding redo. Option C is wrong because the primary does not send redo directly to the physical standby when a Far Sync is present. Option D is incorrect since Fast-Start Failover status does not affect the basic redo forwarding functionality in this context.