OCP-1Z0-053-V12.02-565题

565.As soon as you discover that you have lost an online redo log, if the database is still functioning, what
should be your first action?
A. Shut down the database
B. Clear the online redo log
C. Back up the database
D. Checkpoint the database
E. Call Oracle support
Answer: D
答案解析：
如果在线日志丢失，第一就是切换日志，不让继续写在丢失的日志上。