单项选择题
A. recover lost blocks
B. recover corrupt blocks
C. recover media corrupt blocks from list
D. recover corrupt blocks from list
E. recover corruption list
多项选择题 You have a database with the following tablespaces： SYSTEM， SYSAUX， UNDO， USERS， TEMP. You want to"roll back" the data in the USERS tablespace to the way it looked yesterday. Which tablespaces do you need to perform a point-in-time restore operation on in order to complete this task？（）
单项选择题 Whichofthefollowingdoestherecovercommandnotdo？（）
多项选择题 Whichofthefollowingarevaliduntilcommandoptionswhenattemptingpoint-in-timerecoveryinRMAN？（）