Oracle Database 12c: RAC and Grid Infrastructure Administration — Question 17

Attempting to start the observer raises an error:
DGMGRL> start observer:
DGM-16954: Unable to open and lock the Observer configuration file Failed.
Identify two possible reasons for this error.

Answer options

• A. Fast-Start Failover is not yet enabled for this Data Guard configuration.
• B. The observer configuration file is marked read-only.
• C. There is already an observer running for this Data Guard configuration.
• D. There is another observer running for a Data Guard configuration which uses the same observer configuration file.
• E. The broker configuration has not yet been created.

Correct answer: B, D

Explanation

The correct answer B indicates that the observer configuration file cannot be modified due to read-only permissions. Answer D is valid because it highlights the conflict of having another observer using the same configuration file, which would prevent the new observer from starting. The other options do not directly relate to the inability to open and lock the configuration file.