多项选择题

In which three situations is incomplete recovery required？（）

A.After a shutdown abort.
B.When recovering to an SCN.
C.When recovering until a specific time.
D.When a required archived log is missing.

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单项选择题

After running the CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS command， what has been accomplished？（）

A.Retain the data file backup for 7 days.
B.Run the recover process every 7 days.
C.Destroy the physical backup files every 7 days.
D.Destroy the physical backup files older than 7 days.
E.Retain one backup of each data file for at least 7 days.
F.Keep the catalog information in the control file for 7 days.

单项选择题

You experience a loss of the disk on which the USER_DATA tablespace data files are stored. You attempt to recover the data files but discover that the archived redo log file with sequence number 45， which is needed to perform complete recovery， is invalid. You then begin incomplete recovery-You receive this prompt：
ORA-00279：change 309012...03/09/01 11：33：56 needed for thread ORA-00289： suggestion ：
/disk1/archive/arch_45.rdo ORA-00280： change 309012 for thread 1 is in sequence #45 Specify log：
{=suggested | filename | AUTO | CANCEL}
What is the correct response？（）

A.Enter the keyword AUTO.
B.Enter the keyword CANCEL.
C.Press the Enter or Return key.
D.Provide the filename ’/disk1/archive/arcg_46.rdo’

多项选择题

Which two RMAN commands initiate a resynchronization of the recovery catalog with the target database control file？（）

A.COPY
B.BACKUP
C.CHANGE
D.DELETE
E.CATALOG