单项选择题
A. Provide a password for the encryption
B. Set up an Oracle wallet for the encryption
C. No setup is required as it is a default encryption method
D. Both Oracle wallet and password must be set up for the encryption
单项选择题 AfteryouhaverestoredandrecoveredadatabasetoanewhostbyusingapreviouslyperformedRecoveryManager（RMAN）backup，whichisthebestoptionyouwouldconsiderforthenewdatabase？（）
多项选择题 UserSCOTTwantstobackoutthetransactionsontheREGIONStableinhisschema.AsaDBA，whichcommandsmustyouexecutetoenableSCOTTtoflashbackthetransactions？（）
单项选择题 Examine the following RMAN script： RMAN> run { debug on； allocate channel c1 type disk； backup datafile 5； } Which statement describes the purpose of the script？（）