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[主观题]

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.

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更多“You enable block change tracki…”相关的问题

第1题

You enable block change tracking. You issue the following command: BACKUP INCREMENTAL LEVE

L 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.

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第2题

You have not configured Oracle Managed Files （OMF) in your database. You do not want to sc

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;

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第3题

You performed an incremental level 0 backup of a database:RMAN > BACKUP INCREMENTAL LEV

EL 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.

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第4题

Examine the following command used to perform incremental level 0 backup:RMAN> BACKUP I

NCREMENTAL 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.

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第5题

To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file？（）

A. Multiple change tracking files can be created for a database.

B. The change tracking file must be created after the first level 0 backup.

C. RMAN does not support backup and recovery of the change tracking file.

D. The database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.

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第6题

To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file？（）（Choose two.)

A. Multiple change tracking files can be created for a database.

B. The change tracking file must be created after the first level 0 backup.

C. RMAN does not support backup and recovery of the change tracking file.

D. The database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.

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第7题

Your network contains one active directory domain. You have a member server that runs windows server 2008. You need to immediately disable all incoming connections to the server. What should you do？（）

A.From the services snap-in disable the IP helper.

B.From the services snp-in disable the net logon service.

C.From windows firewall. Enable the block all connections option on the public profile.

D.From the windows firewall, enable the block all connections option on the domain profile.

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第8题

You need to perform a block media recovery on the tools01.dbf data file in the SALES database by using Recovery Manager （RMAN).Which two are the prerequisites to perform this operation？（）（Choose two)

A. You must configure block change tracking file

B. You must have first level 1 backups for RMAN to restore blocks

C. You must ensure that the SALES database is mounted or open

D. You must have full or level 0 backups for RMAN to restore blocks

E. You must take the tools01.dbf data file offline before you start a block media recovery

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第9题

You need to perform a block media recovery on the tools01.dbf data file in the SALES database by using Recovery Manager （RMAN).Which two are the prerequisites to perform this operation？（）

A. You must configure block change tracking file

B. You must have first level 1 backups for RMAN to restore blocks

C. You must ensure that the SALES database is mounted or open

D. You must have full or level 0 backups for RMAN to restore blocks

E. You must take the tools01.dbf data file offline before you start a block media recovery

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