单项选择题
A. by using the DBMS_REPAIR package
B. by using the DBVERIFY utility
C. by using Block Media Recovery
D. by issuing the ANALYZE TABLE HR.EMPLOYEES VALIDATE STRUCTURE command
单项选择题 The datafiles of your database are ASM files. You are performing a check for datafile block corruption by using the DBVERIFY utility. What is a prerequisite for checking block corruption on an ASM datafile by using the DBVERIFY utility？（）
单项选择题 YouaremaintainingthePRODdatabaseofTeleSoftCorporation.YouhaveinitializedthefollowingDB_BLOCK_CHECKINGparameterintheinit.orafile：DB_BLOCK_CHECKING=TRUE；Whatwillbetheresultofsettingthisparameter？（）
单项选择题 YouareusingtheBlockMediaRecoveryfeaturetorecovertheblocksthataremarkedcorruptsincethelastbackup.Whichviewwillyouquerytodisplayinformationaboutthedatablocksthataremarkedcorruptsincethelastbackup？（）