单项选择题
A.Start up only.
B.Restore needed data files， then start up.
C.Complete restore from backup， then start up.
D.Perform point in time recovery， then start up.
多项选择题 WhenCONFIGURECONTROLFILEAUTOBACKUPissettoON，RMANautomaticallyperformsacontrolfileautobackupinwhichthreesituations？（）
单项选择题 You are creating a recovery catalog for use with RMAN. You have issued these commands： SQL> CREATE TABLESPACE rman_ts DATAFILE ’/DISK1/rman_ts01.dbf’ 2> SIZE 20M 3> DEFAULT STORAGE （initial 100K next 100K pctincrease 0）； SQL> CREATE USER rman_db01 IDENTIFIED BY rman_db01 2> DEFAULT TABLESPACE rman_ts 3> QUOTA unlimited ON rman_ts； Which command should you issue next？（）
多项选择题 Whenacheckpointoccursthe（）.（）.and（）aresynchronized.