You issued the RMAN>SHOW ALL; command. The output of this command is as follows: After analyzing the output, which conclusion will you draw?()
A: The current control file is not automatically backed up every time you perform a backup.
B: The backups save space on the storage media.
C: While performing backups across a network, the network bandwidth is reduced.
D: The backups consist of backup pieces.
出自:Oracle认证