Oracle Database 12c: RAC Administration — Question 34

Which three statements are true about Global Resource Management in an Oracle 12c RAC database?

Answer options

• A. Lazy remastering occurs when an instance shuts with SHUTDOWN IMMEDIATE.
• B. Object remastering causes all blocks in any instances’ buffer cache from the same object to be mastered in the Global Resource Directory (GRD).
• C. When a database instance fails, then some global resource masters lost from the failing instance are remastered among the surviving instances.
• D. Lazy remastering instances occurs when an instance shuts with SHUTDOWN TRANSACTIONAL.
• E. Global Enqueue resources are recovered after Global Cache Resources after an instance failure.

Correct answer: B, C, D

Explanation

Option B is correct because object remastering ensures that all blocks of a specific object in any instance's buffer cache are correctly managed in the Global Resource Directory. Option C is true as it describes how global resource masters are remastered among surviving instances after a failure. Option D is accurate since lazy remastering indeed occurs when using SHUTDOWN TRANSACTIONAL, while option A incorrectly states the condition for lazy remastering.