Your database is configured in NOARCHIVELOG mode. Due to a media failure， you have lost one of the datafiles belonging to a read-only tablespace. You know that the last backup was performed after the tablespace was made read-only. Which action should you take to restore the missing datafile in the minimum amount of time？（）

发布日期：2020-04-10

A.Restore all the datafiles from the backup.

B.Restore only the lost datafile from the backup.

C.Restore all the datafiles for the lost tablespace from the backup.

D.Restore all the datafiles for the lost tablespace and all the SYSTEM and SYSAUX datafiles from the backup.

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