What are three purposes of the RMAN “FROM” clause?()
A:to support PUSH-based active database duplication
B:to support synchronization of a standby database with the primary database in a Data environment
C:To support PULL-based active database duplication
D:To support file restores over the network in a Data Guard environment
E:To support file recovery over the network in a Data Guard environment
出自:Oracle认证