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:

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
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
出自:Oracle认证