多項(xiàng)選擇題

Examine the following RMAN command:

Which two statements are true regarding the backup taken by using the above RMAN command?()

A. Only data files and the control file are backed up.
B. Archived redo logs are backed up only I f the database is open during the backup.
C. The backup is deleted after one day, regardless of the default retention policy settings.
D. The backup becomes obsolete after one day, regardless of the default retention policy settings.

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