7: In which of the scenarios will the DBA perform recovery? (Choose all that apply.)

A.The alert log file is corrupted.

B.A tablespace is accidentally dropped.

C.One of the redo log members is corrupted.

D.A database user terminates the session abnormally.

E.The hard disk on which the data file is stored is corrupted.

Correct Answers: B E

那种情况需要DBA执行恢复操作？