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You performed an incremental level 0 backup of a database: RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE; To enable block change tracking after the incremental level 0 backup, you issued this command: SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ‘ /mydir/rman_change_track.f’; To perform an incremental level 1 cumulative backup, you issued this command: RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which three statements are true?（）
- A、Backup change tracking will sometimes reduce I/O performed during cumulative incremental backups.
- B、The change tracking file must always be backed up when you perform a full database backup.
- C、Block change tracking will always reduce I/O performed during cumulative incremental backups.
- D、More than one database block may be read by an incremental backup for a change made to a single block.
- E、The incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.
参考答案
更多 “ You performed an incremental level 0 backup of a database: RMAN BACKUP INCREMENTAL LEVEL 0 DATABASE; To enable block change tracking after the incremental level 0 backup, you issued this command: SQL ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ‘ /mydir/rman_change_track.f’; To perform an incremental level 1 cumulative backup, you issued this command: RMAN BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which three statements are true?（）A、Backup change tracking will sometimes reduce I/O performed during cumulative incremental backups.B、The change tracking file must always be backed up when you perform a full database backup.C、Block change tracking will always reduce I/O performed during cumulative incremental backups.D、More than one database block may be read by an incremental backup for a change made to a single block.E、The incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.” 相关考题
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You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement should you use to enable the block change tracking feature?（）A. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;B. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE path;C. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE path;D. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING;
考题
A full backup is performed every Sunday and incremental backups are performed daily Monday through Saturday. How many tapes would be required to perform a full restore if a complete failure occurred on Thursday before the incremental backup？（）A、 2B、 3C、 4D、 5
考题
Which type of backup must be performed first with an incremental backup？（）A、 Level 1B、 Level 0C、 Level 2D、 Level 3
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According to your backup strategy， you performed an incremental level 0 backup of yourdatabase. Which statement regarding this backup is true？（）A、The backup is similar to image copy.B、The backup contains all used data blocks.C、The backup contains only unused data blocks.D、The backup contains all data blocks changed since the last incremental level 1 backup.
考题
You are managing an Oracle Database 11g database with this backup strategy： - Every Sunday night， level 0 backup is performed. - On Monday night and subsequent days， level 1 incremental backup is performed. The backups are not cumulative incremental. Which statement about Monday’s backup is true（）A、The backup contains all the used blocks.B、The backup contains all the used and unused blocks.C、The backup contains blocks that have changed since the last level 0 backup.D、The backup contains blocks that have changed since the last level 1 backup taken last week.
考题
You are managing an Oracle Database 11g database with the following backup strategy：1） On Sunday， an incremental level 0 tape backup is performed.2） Monday through Saturday， a cumulative incremental level 1 tape backup is performed. Which twostatements are true regarding the backups performed（）A、The backup performed in step 1 backs up all blocks that have ever been in use in the database.B、The backup performed in step 2 copies all the blocks changed since the most recent level 0 backup.C、The backup performed in step 1 backs up all the blocks changed since the most recent level 1 backup.D、The backup performed in step 2 backs up all blocks that have changed since the most recent incrementalbackup at level 1
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You work as a database administrator for Certkiller .com. According to your backup strategy， you performed an incremental level 0 backup of your database. Which statement regarding this backup is true？（）A、The backup is similar to image copy.B、The backup contains all used data blocks.C、The backup contains only unused data blocks.D、The backup contains all data blocks changed since the last incremental level 1 backup.
考题
You are managing a database for which incremental backups can be very time consuming. In order to perform optimized incremental backups you enable the block change tracking feature.How would you instruct RMAN to use the block change tracking feature when performing incremental backups？（）A、 You need to mention it with every BACKUP command.B、 The block change tracking feature is used automatically by RMAN.C、 You need to configure it using the CONFIGURE command.D、 You need to set the necessary initialization parameters to direct RMAN to use the feature.
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You performed a backup of the flash recovery area by using the following command for the first time： RMAN BACKUP RECOVERY AREA; Which files in the flash recovery area are backed up？（）A、flashback logsB、current control fileC、control file autobackupsD、incremental backup sets
考题
You have a file server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). You enable Shadow Copies on all drives by using the default options. You run a full backup every Monday at 02:00. You run an incremental backup every day at 02:00, except on Monday. On Thursday at 14:00, a user reports that he accidentally deleted a file named File1.doc in a shared folder named //Server1/Data/. The user reports that the file was last updated at 09:00 on Thursday. You need to restore the latest version of File1.doc. What should you restore? （）A、the file by using the Previous Versions ClientB、the file from the full backup performed on MondayC、the file from the incremental backup performed on ThursdayD、the user’s computer by using Automated System Recovery (ASR)
考题
单选题You are managing a database for which incremental backups can be very time consuming. In order to perform optimized incremental backups you enable the block change tracking feature.How would you instruct RMAN to use the block change tracking feature when performing incremental backups？（）A
You need to mention it with every BACKUP command.B
The block change tracking feature is used automatically by RMAN.C
You need to configure it using the CONFIGURE command.D
You need to set the necessary initialization parameters to direct RMAN to use the feature.
考题
单选题You work as a database administrator for Certkiller .com. According to your backup strategy， you performed an incremental level 0 backup of your database. Which statement regarding this backup is true？（）A
The backup is similar to image copy.B
The backup contains all used data blocks.C
The backup contains only unused data blocks.D
The backup contains all data blocks changed since the last incremental level 1 backup.
考题
单选题Which type of backup must be performed first with an incremental backup？（）A
Level 1B
Level 0C
Level 2D
Level 3
考题
多选题You perform differential incremental level 1 backups of your database on each working day and level 0 backup on Sundays， to tape. Which two statements are true about differential incremental backups（）AThe backup performed on Sundays contains all the blocks that have ever been used in the database.BThe backup performed on Sundays contains all the blocks that have changed since the last level 1backup.CThe backup performed on each working day contains all the blocks that have changed since the lastlevel 0 backup.DThe backup performed on Monday contains all the blocks that have changed since the level 0 backup，and every other working day contains all the blocks that have changed since the level 1 backup.
考题
单选题You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature.Which statement should you use to enable the block change tracking feature?（）A
ALTER DATABASE ENABLE BLOCK CHANGE TRACKINGB
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE C
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE D
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING
考题
多选题You performed an incremental level 0 backup of a database: RMAN BACKUP INCREMENTAL LEVEL 0 DATABASE; To enable block change tracking after the incremental level 0 backup, you issued this command: SQL ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ‘ /mydir/rman_change_track.f’; To perform an incremental level 1 cumulative backup, you issued this command: RMAN BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which three statements are true?（）ABackup change tracking will sometimes reduce I/O performed during cumulative incremental backups.BThe change tracking file must always be backed up when you perform a full database backup.CBlock change tracking will always reduce I/O performed during cumulative incremental backups.DMore than one database block may be read by an incremental backup for a change made to a single block.EThe incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.
考题
单选题According to your backup strategy， you performed an incremental level 0 backup of your database. Which statement regarding this backup is true？（）A
The backup is similar to image copy.B
The backup contains all used data blocks.C
The backup contains only unused data blocks.D
The backup contains all data blocks changed since the last incremental level 1 backup.
考题
单选题You are managing an Oracle Database 11g database with this backup strategy： - Every Sunday night， level 0 backup is performed. - On Monday night and subsequent days， level 1 incremental backup is performed. The backups are not cumulative incremental. Which statement about Monday’s backup is true（）A
The backup contains all the used blocks.B
The backup contains all the used and unused blocks.C
The backup contains blocks that have changed since the last level 0 backup.D
The backup contains blocks that have changed since the last level 1 backup taken last week.
考题
单选题You take backups of your hard drives every night. On Thursday morning you see that the hard disk has crashed. The backup log shows: * Friday normal backup completed * Saturday incremental backup completed * Sunday incremental backup completed * Monday incremental backup completed * Tuesday incremental backup incomplete * Wednesday incremental backup completed. What should you do to restore your data to the update state?（ ）A
Restore using the tapes from Friday， Saturday， Sunday， Monday and Wednesday.B
Restores using only Fridays tapeC
Restore using the tapes from Thursday， Friday， Saturday， Sunday and Tuesday.D
Restore using the tapes from Friday and Tuesday.E
Restore using the tapes from Tuesday and Thursday.
考题
单选题You have a file server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). You enable Shadow Copies on all drives by using the default options. You run a full backup every Monday at 02:00. You run an incremental backup every day at 02:00, except on Monday. On Thursday at 14:00, a user reports that he accidentally deleted a file named File1.doc in a shared folder named //Server1/Data/. The user reports that the file was last updated at 09:00 on Thursday. You need to restore the latest version of File1.doc. What should you restore? （）A
the file by using the Previous Versions ClientB
the file from the full backup performed on MondayC
the file from the incremental backup performed on ThursdayD
the user’s computer by using Automated System Recovery (ASR)
考题
多选题You are managing an Oracle Database 11g database with the following backup strategy：1） On Sunday， an incremental level 0 tape backup is performed.2） Monday through Saturday， a cumulative incremental level 1 tape backup is performed. Which twostatements are true regarding the backups performed（）AThe backup performed in step 1 backs up all blocks that have ever been in use in the database.BThe backup performed in step 2 copies all the blocks changed since the most recent level 0 backup.CThe backup performed in step 1 backs up all the blocks changed since the most recent level 1 backup.DThe backup performed in step 2 backs up all blocks that have changed since the most recent incrementalbackup at level 1
考题
单选题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.
考题
单选题A full backup is performed every Sunday and incremental backups are performed daily Monday through Saturday. How many tapes would be required to perform a full restore if a complete failure occurred on Thursday before the incremental backup?（）A
2B
3C
4D
5
考题
单选题You have not configured Oracle Managed Files （OMF） in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement should you use to enable the block change tracking feature？（）A
ALTER DATABASE ENABLE BLOCK CHANGE TRACKINGB
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE C
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE D
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING
考题
单选题A full backup is performed every Sunday and incremental backups are performed daily Monday through Saturday. How many tapes would be required to perform a full restore if a complete failure occurred on Thursday before the incremental backup？（）A
2B
3C
4D
5
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