In your database, the flash rec

单项选择题 In your database, the flash recovery area (FRA) is configured as the default for RMAN backups. You executed the following commands to configure the settings in RMAN: RMAN> CONFIGURE DEVICE TYPE disk PARALLELISM 2 BACKUP TYPE TO BACKUPSET; RMAN> CONFIGURE CHANNEL 1 DEVICE TYPE disk FORMAT '/home/oracle/disk1/%U'; RMAN> CONFIGURE CHANNEL 2 DEVICE TYPE disk FORMAT '/home/oracle/disk2/%U'; You issue the following RMAN command to backup the database: RMAN> RUN 2> { 3> ALLOCATE CHANNEL ch1 DEVICE TYPE disk; 4> BACKUP DATABASE; 5> } Which statement is true about the outcome?（）: A、Only one channel is allocated and the backup is created in the flash recovery area; B、Only one channel is allocated and the backup is created in the destination specified for channel 1; C、Two channels are allocated and backup sets are created in the destinations specified for channels 1 and 2; D、Three channels are allocated and backup sets are created in the destinations specified for channels 1, 2, and FRA

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