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Question 8

Which two statements are true about the Global Enqueue Service, Instance Locks, and global enqueues in Oracle 19c RAC? (Choose two.)

Global Enqueues and Instance Locks replace mutexes completely in RAC database instances.

Global Enqueues may have converters and waiters in the same instance.

Global Enqueues may have owners and waiters in the same instance.

Global Enqueues and Instance Locks replace latches completely in RAC database instances.

In a RAC database, there is no LMD0 process if only one instance is running.

In a RAC One Node database, there is no LMD0 process if only one instance is running.

Correct Answer: B, C

Global Enqueues may have owners and waiters in the same instance and may have converters and waiters in the same instance. These statements are true because they accurately describe the behavior of global enqueues in Oracle 19c RAC. Other options either overstate or misinterpret the functionality of Global Enqueues, Instance Locks, or the LMD0 process.

Discussion

ccshyuOptions: BC

B,C , Both rac & rac one node havelmd0 backgroup process.

217972fOptions: BC

Sure of BC