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You performed the RMAN database backup with the KEEP option.Which two statements are true about this backup?（） (Choose two)
A:The KEEP option overrides the configured retention policy
B:The KEEP option is an attribute of an individual backup piece
C:The backup contains only data files and archived redo log files
D:The backup contains data files, the server parameter file and the control file even if the control file auto backup is disabled

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出自：Oracle认证

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