多选题Your database is functioning in ARCHIVELOG mode. In which two situations would you perform a cancel-based recovery？ （）AYou find that one of the redo log members in each redo log group is lost.BYou find that a data file that belongs to the USERS tablespace is damaged.CYou find that a data file that belongs to the SYSTEM tablespace is damaged.DYou find that the current redo log group is damaged and is not available for recovery.EYou realized while performing a recovery that an archived redo log file needed for recovery is lost.
多选题
Your database is functioning in ARCHIVELOG mode. In which two situations would you perform a cancel-based recovery？ （）
A
You find that one of the redo log members in each redo log group is lost.
B
You find that a data file that belongs to the USERS tablespace is damaged.
C
You find that a data file that belongs to the SYSTEM tablespace is damaged.
D
You find that the current redo log group is damaged and is not available for recovery.
E
You realized while performing a recovery that an archived redo log file needed for recovery is lost.
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