053-596

What feature comes into play to help ensure the completion of the backup should one of three
backup devices fail during a backup that is using three different channels?
A. Channel failover
B. Restartable backups
C. Rescheduable backups
D. Automatic backup recovery
E. Channel recovery

　　Channel failover is the RMAN feature that provides the ability for other channels to take over the work of a failed channel during backup and recovery operation.Obviously,channel failover requires the allocation of more than one channel.