You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database.Which two statements are true about this backup operation?() A. Backup compression should be enabledB. Parallelism for the channel should be set to 2C. All the files must be backed up as backup setsD. The backup may be stored either on disk or on media with media manager
You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database.Which two statements are true about this backup operation?()
A. Backup compression should be enabled
B. Parallelism for the channel should be set to 2
C. All the files must be backed up as backup sets
D. The backup may be stored either on disk or on media with media manager
相关考题：
Examine the following command used to perform incremental level 0 backup:RMAN BACKUP INCREMENTAL LEVEL 0 DATABASE;To enable the block change tracking, after the incremental level 0 backup you issued the following command:SQL ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USINGFILE ‘/mydir/rman_change_track.f‘;To perform incremental level 1 cumulative backup, you issued the following command:RMAN BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;Which two statements are true in the above situation?（）A. The block change tracking data will be used only from the next incremental 0 backup.B. The incremental backup will use change tracking data for accomplishing the backup.C. The incremental backup will not use change tracking data for accomplishing the backup.D. The block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.
You enable block change tracking. You issue the following command: BACKUP INCREMENTAL LEVEL 0 DATABASE;The next day, you issue the following command:BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;Which statement about the use of the change tracking file is true?（）A. RMAN reads the block change tracking file only when it performs the incremental level 0 backup.B. RMAN reads the block change tracking file when it performs both incremental backups.C. RMAN reads the block change tracking file only when it performs the incremental level 1 backup.D. RMAN does not read the block change tracking file when it performs either incremental backup.
Examinethefollowingcommandusedtoperformincrementallevel0backup：RMANBACKUPINCREMENTALLEVEL0DATABASE；Toenabletheblockchangetracking，aftertheincrementallevel0backupyouissuedthefollowingcommand：SQLALTERDATABASEENABLEBLOCKCHANGETRACKINGUSINGFILE’/mydir/rman_change_track.f’；Toperformincrementallevel1cumulativebackup，youissuedthefollowingcommand：RMANBACKUPINCREMENTALLEVEL1CUMULATIVEDATABASE；Whichtwostatementsaretrueintheabovesituation？（）A.Theblockchangetrackingdatawillbeusedonlyfromthenextincremental0backup.B.Theincrementalbackupwillusechangetrackingdataforaccomplishingthebackup.C.Theincrementalbackupwillnotusechangetrackingdataforaccomplishingthebackup.D.Theblocktrackfilewillscanalltheblocksandcreatebitmapforalltheblocksbackedupinthelevel0backup.
Whichviewprovidesinformationonthebackupstatusofthedatafilesinthedatabase?() A.V$BACKUPB.V$BACKUP_STATUSC.V$BACKUP_DATAFILED.V$DATAFILE_BACKUPE.V$TABLESPCE_BACKUP
Youbackedupthedatabaseat8a.m.todayusinganonlinebackup.Accountingmadealargechangetotheunderlyingdatabetween10a.m.andnoon.Whichofthefollowingactionswouldensurethatthechangescouldberecoveredusingthe8a.m.backup？（）A.Createamanualincrementalonlinedatabasebackup.B.Backupallthearchivedredologsgeneratedsincethe8a.m.backup.C.Createabrand-newbackupafterallthechangeshavebeenapplied.D.Thereisnowaytomakethechangesrecoverablebasedonthe8a.m.backup.E.Performanonlinebackupofthetablespace（s）thatcontainedchangeddata.
Youperformdifferentialincrementallevel1backupsofyourdatabaseoneachworkingdayandlevel0backuponSundays,totape.Whichtwostatementsaretrueaboutdifferentialincrementalbackups() A.ThebackupperformedonSundayscontainsalltheblocksthathaveeverbeenusedinthedatabase.B.ThebackupperformedonSundayscontainsalltheblocksthathavechangedsincethelastlevel1backup.C.Thebackupperformedoneachworkingdaycontainsalltheblocksthathavechangedsincethelastlevel0 backup.D.ThebackupperformedonMondaycontainsalltheblocksthathavechangedsincethelevel0backup，and everyotherworkingdaycontainsalltheblocksthathavechangedsincethelevel1backup
Youexecutedthefollowingcode:BACKUPVALIDATEDATABASE;BLOCKRECOVERCORRUPTIONLIST;Whatwillbetheresultofexecutingtheabovecode?() A.ThecodewillrunabackupvalidationtopopulatetheV$BACKUP_CORRUPTIONviewandrepaircorruptblocks，ifany，recordedintheview.B.ThecodewillrunabackupvalidatetopopulatetheV$COPY_CORRUPTIONviewandthenrepairanycorruptblocksrecordedintheview.C.ThecodewillrunsabackupvalidatetopopulatetheV$DATABASE_BLOCK_CORRUPTIONviewandthenrepaircorruptblocks，ifany，recordedintheview.D.ThecodewillrunabackupvalidatetopopulatetheRC_BACKUP_CORRUPTIONviewandthenrepaircorruptblocks，ifany，recordedintheview.
YouareusingtheBlockMediaRecoveryfeaturetorecovertheblocksthataremarkedcorruptsincethelastbackup.Whichviewwillyouquerytodisplayinformationaboutthedatablocksthataremarkedcorruptsincethelastbackup?() A.V$BACKUP_CORRUPTIONB.V$COPY_CORRUPTIONC.V$DATABASE_BLOCK_CORRUPTIOND.RC_BACKUP_CORRUPTION
WherecanyouobtaininformationaboutfulldatabasebackupsetcreatedusingRMAN,ifthecontrolfilewasusedastherepository?() A.V$BACKUPSETB.RC_DATABASEC.V$BACKUP_SETD.RC_BACKUP_SET
An administrator wants to restore the /etc/resolv.conf file from a mksysb backup onto server1. After the mksysb is mounted in /mnt/backup/ from the local nim server.Which command should be run to restore the file?（）A.tar -xvf /mnt/backup/server1.mksysb ./etc/resolv.confB.restore -Tvf /mnt/backup/server1.mksysb ./etc/resolv.confC.listvgbackup -f /mnt/backup/server1.mksysb -r ./etc/resolv.confD.restorevgfiles -xrm /mnt/backup/server1.mksysb ./etc/resolv.conf