单项选择题
A.RECOVER DATABASE
B.RECOVER TABLESPACE
C.RECOVER DATAFILE
D.ALTER DATABASE RECOVER DATAFILE
单项选择题 Whichofthefollowingviewsmustyouquerytoidentifyanycorruptdatafileblocksthathavebeendetectedduringbackupsetcreation？（）
单项选择题 Whichdatadictionaryviewsdisplaystheerrorinformationrelatedtoadatafile，whenaninternalreadfailsonthatfile？（）
单项选择题 AfteranumberofdayssetbytheparameterCONTROL_FILE_RECORD_KEEP_TIME，theinformationinthecontrolfileisoverwrittenbyRMAN.Whatisthisparameter’sdefaultvalue？（）