ocp题库更新，052最新考试题及答案整理-31

31、Which two events always request the LGWR to write?

A) when LGWR is notified by a server process that performs a Commit or ROLLBACK

B) When PMON restarts a server process

C) when DBWn writes dirty buffers

D) when a log switch occurs

E) when a checkpoint occurs

Answer:CD