单选题What purpose would you achieve by enabling the block change tracking feature？（）A Eliminate the necessity for backups.B Perform optimized image copy backups.C Perform optimized incremental backups.D Enable checkpoint （CKPT） to perform checkpointing at every block change.E Enable database writer （DBWn） to write changed blocks to data files faster.
单选题
What purpose would you achieve by enabling the block change tracking feature？（）
A
Eliminate the necessity for backups.
B
Perform optimized image copy backups.
C
Perform optimized incremental backups.
D
Enable checkpoint （CKPT） to perform checkpointing at every block change.
E
Enable database writer （DBWn） to write changed blocks to data files faster.
参考解析
解析：
暂无解析
相关考题：
(b) What styles of managing change would you recommend John use to bring about the desired change?(8 marks)
A:( ), David? B:An orange juice.A. What do you likeB. What would you likeC. Would you like an orange juice
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;
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.
If there were two things you could change in your last (or present) job, what would they be and how would you change them?如果在你的前一份（或现在的）工作中，你可以改变两件事，会是什么，你如何改变？
Which of the following statements is NOT true about RMAN？（）A、It improves usability by enabling you to reuse the scripts to perform recovery operations.B、It detects block corruption while restoration and recovery operations.C、It enables you to perform block media recovery.D、It is capable to recover through unrecoverable operations， with only full database backups.
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？（） A、 The block change tracking feature must be enabled.B、 OMF must be configured on your database.C、 The database must be in ARCHIVELOG mode.D、 A USERID must be supplied.
What purpose would you achieve by enabling the block change tracking feature？（）A、 Eliminate the necessity for backups.B、 Perform optimized image copy backups.C、 Perform optimized incremental backups.D、 Enable checkpoint （CKPT） to perform checkpointing at every block change.E、 Enable database writer （DBWn） to write changed blocks to data files faster.
You issued the following command： ALTER DATABASE ENABLE BLOCK CHANGE TRACKING； What will be the result of issuing this command？（）A、 The block change tracking feature is enabled， and the information about the system change number is written in the change tracking file.B、 The block change tracking feature is enabled， and the information about the log sequence number is written in the change tracking file.C、 The block change tracking feature is enabled， and the information about the blocks that are changed since the last backup is written in the change tracking file.D、 The block change tracking feature is enabled， and the information about the locations of the datafiles and the online redo log files are written in the change tracking file.
Which RMAN backup command is used to create the block-change tracking file？（） A、 alter database create block change tracking fileB、 alter database enable block change fileC、 alter database enable block change tracking using file ，/ora01/opt/ block_change_tracking.filD、 alter system enable block change tracking using file ’/ora01/opt/block_ change_tracking.fil’E、 alter system block change tracking on
You have configured OMF in your database. You enabled the ALTER DATABASE ENABLE BLOCK CHANGE TRACKING； statement to enable the block change tracking feature. What information will be written in the change tracking file？（）A、 the system change numberB、 the locations of the redo log filesC、 the locations of the datafilesD、 the physical location of all the database changes
What is the purpose of the until change option of the restore command？（） A、 It allows you to select the SCN that you want to restore to.B、 It allows you to select the log sequence number you want to restore to.C、 It allows you to select the timestamp you want to restore to.D、 It allows you to manually stop the restore at any time as online redo logs are applied.E、 None of the above.
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.
If you find errors in the view V$DATABASE_BLOCK_CORRUPTION with a status of MEDIA_CORRUPT， what RMAN command would you run to correct the problem？（）A、 recover lost blocksB、 recover corrupt blocksC、 recover media corrupt blocks from listD、 recover corrupt blocks from listE、 recover corruption list
You manage a server that runs Windows Server 2008. You have installed the Windows SharePointServices （WSS） server role on the server. The server is configured to accept incoming mail. Tostreamline the process， you create a new document library. You have to make sure that any user can sendemail to the document library. What should you do to achieve this task？（）A、Change the incoming email settings for the document libraryB、Enable basic user authentication for the document libraryC、Modify the document library settings to accept emails from SMTP serversD、Change the permissions for the document library
单选题What is the purpose of the until change option of the restore command？（）A It allows you to select the SCN that you want to restore to.B It allows you to select the log sequence number you want to restore to.C It allows you to select the timestamp you want to restore to.D It allows you to manually stop the restore at any time as online redo logs are applied.E None of the above.
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.
单选题You issued the following command： ALTER DATABASE ENABLE BLOCK CHANGE TRACKING； What will be the result of issuing this command？（）A The block change tracking feature is enabled， and the information about the system change number is written in the change tracking file.B The block change tracking feature is enabled， and the information about the log sequence number is written in the change tracking file.C The block change tracking feature is enabled， and the information about the blocks that are changed since the last backup is written in the change tracking file.D The block change tracking feature is enabled， and the information about the locations of the datafiles and the online redo log files are written in the change tracking file.
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?（）AALTER DATABASE ENABLE BLOCK CHANGE TRACKINGBALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE CALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE DALTER SYSTEM ENABLE BLOCK CHANGE TRACKING
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.
单选题You are managing an Oracle Database 10g database that uses Oracle Managed Files （OMF）. You enabled the block change tracking feature for the database. Which statement regarding the change tracking file is true？（）A One block change tracking file is created for each data file. By default， the file is created in DB_CREATE_FILE_DEST.B One block change tracking file is created for each data file. By default， the file is created in BACKGROUND_DUMP_DEST.C One block change tracking file is created for the database. By default， the file is created in DB_CREATE_FILE_DEST.D One block change tracking file is created for the database. By default， the file is created in BACKGROUND_DUMP_DEST.
单选题You have configured OMF in your database. You enabled the ALTER DATABASE ENABLE BLOCK CHANGE TRACKING； statement to enable the block change tracking feature. What information will be written in the change tracking file？（）A the system change numberB the locations of the redo log filesC the locations of the datafilesD the physical location of all the database changes
单选题You want a record of all queries that are not using indexes. How would you achieve this?（）ABy enabling the Slow Query Log because all queries that are not using indexes will be logged automaticallyBBy enabling the Error Log because not using indexes is an errorCBy enabling the Slow Query Log and using the – log-queries-not-using-indexes optionDBy enabling the Error Log and using the – log-queries-not-using-indexes option
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?（）ARMAN reads the block change tracking file only when it performs the incremental level 0 backup.BRMAN reads the block change tracking file when it performs both incremental backups.CRMAN reads the block change tracking file only when it performs the incremental level 1 backup.DRMAN does not read the block change tracking file when it performs either incremental backup.
单选题If you find errors in the view V$DATABASE_BLOCK_CORRUPTION with a status of MEDIA_CORRUPT， what RMAN command would you run to correct the problem？（）A recover lost blocksB recover corrupt blocksC recover media corrupt blocks from listD recover corrupt blocks from listE recover corruption list
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
单选题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？（）A The block change tracking feature must be enabled.B OMF must be configured on your database.C The database must be in ARCHIVELOG mode.D A USERID must be supplied.