单项选择题
A. loss of one of the tablespaces
B. loss of a system data file
C. loss of one of the control files
D. loss of a tempfile
E. loss of the only member of an unarchived redo log group
F. loss of a member from each redo log group
单项选择题 ThebackupretentionpolicyisconfiguredasRECOVERYWINDOW2.YouexecutedthefollowingcommandinRecoveryManager（RMAN）againstyourdatabase：RMAN>REPORTOBSOLETE；Whatwouldyouseeintheoutput？（）
单项选择题 YouhaveanAutomaticStorageManagement（ASM）instancemanagingthedatabasefilesofyourproductiondatabase.ThedatabasecontainsASMfilesandnon-ASMfiles.UsingRecoveryManager（RMAN），youmigratethecompleteproductiondatabasetousetheASMinstance.Whichstatementistrue？（）
单项选择题 OnMonday，youdroppedtheDEPTtablefromyourschemaandthenyoure-createdtheDEPTtableinyourschema.OnWednesday，youhavearequirementtorestoretheDEPTtablefromtherecyclebin.Whichstatementiscorrect？（）