Oracle Database 12c: RAC and Grid Infrastructure Administration — Question 41

Your Data Guard environment consists of these components and settings:
1. A primary database
2. A remote physical standby database
3. Real-time query is enabled.
4. The redo transport mode is set to SYNC.
5. The protection mode is set to Maximum Availability.
You notice that queries executed on the physical standby database receive errors:
ORA- 03172: STANDBY_MAX_DATA_DELAY of 15 seconds exceeded.
Which two would you recommend to avoid this error?

Answer options

• A. Change the protection mode to Maximum Performance.
• B. Increase the size of the buffer cache on the standby database instance.
• C. Reduce I/O latency for the storage used by the primary database.
• D. Change the protection mode to Maximum Protection.
• E. Increase the network bandwidth between the primary and standby databases.
• F. Increase the number of standby redo log files on the primary database.

Correct answer: A, E

Explanation

Changing the protection mode to Maximum Performance (Option A) allows for more flexibility in data delays, reducing the likelihood of exceeding the STANDBY_MAX_DATA_DELAY limit. Increasing network bandwidth (Option E) can also help ensure that data is transmitted more quickly, alleviating the delay issues. The other options either don't address the underlying problem or might complicate the setup further.