单项选择题
A.RECOVER LOGFILE BLOCK GROUP 2;
B.ALTER DATABASE DROP LOGFILE GROUP 2;
C.ALTER DATABASE CLEAR LOGFILE GROUP 2;
D.ALTER DATABASE RECOVER LOGFILE GROUP 2;
E.ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 2;
单项选择题 Youareusingthefollowingcommandtoclearthelogfilegroup:ALTERDATABASECLEARLOFFILEGROUP2;Inwhichcasewouldthecommandbesuccessful?()
单项选择题 You are working on a very large database. You had performed a binary backup of the control file a month ago. After this you added a few tablespaces, and dropped a couple of tablespaces. This morning, due to hardware failure, you lost all your control files. How would you recover the database from this situation?()
单项选择题 IntheinstanceofthePRODdatabase,thecheckpoint(CKPT)processrunsaftereveryminute.AdatabaseuserupdatestherowsoftheORDERStable.Becauseoftheconfiguration,theCKPTprocessgetsinitiatedbeforetheusercommitsthetransaction.WhatwouldhappentothemodifiedblockswhentheCKPTprocessisstarted?()