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多选题
You plan to take a closed database backup using operating system commands. Which three SHUTDOWN options are appropriate for this type of backup？（）
A

ABORT

B

NORMAL

C

IMMEDIATE

D

TRANSACTIONAL

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考题 单选题You configured the default backup device type as disk for RMAN backups. In your database，because of business requirements，you have to take a simultaneous duplicate backup of the data files when the RMAN BACKUP command is used.  What must you set using the RMAN CONFIGURE command to achieve this？（）A  MAXSETSIZE TO 2B  DEVICE TYPE DISK PARALLELISM 2C  RETENTION POLICY TO REDUNDANCY 2D  DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2
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