单项选择题
A. when all the control files are lost
B. when all the members of a redo log group are lost
C. when a table is dropped and purged from the Recycle Bin
D. when a temporary file of the default temporary tablespace is lost
单项选择题 Inwhichscenariowillyouperformacancel-basedrecovery？（）
单项选择题 YouaremaintainingthePRODdatabaseforNetFxCorporation.Youhaveconfiguredcontrolfileautobackupinyourdatabase.At6：00P.M.onMonday，youissuethefollowingcommand：RMAN>BACKUPDATABASE；At8：00A.M.onTuesday，youareunabletostartthedatabasebecauseallthecontrolfilesaremissing.YoudecidetorestorethecontrolfilesfromthebackupbyusingtheRMAN>RESTORECONTROLFILEFROMAUTOBACKUP；command.WhichoperationshouldyouperformbeforeusingtheRMAN>RESTORECONTROLFILEFROMAUTOBACKUP；command？（）
单项选择题 In which scenario will you issue the following command？（） SQL> RECOVER DATABASE UNTIL TIME ’2005-10-04 ： 12：09：08’ USING BACKUP CONTROLFILE；