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.
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.
相关考题：
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 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.
How is block-change tracking enabled?（）A、With alter database enable block change trackingB、With alter system enable block change tracking C、With an init.ora parameter change D、With an spfile parameter change
You are shrinking the SCOTT.EMP table by executing the ALTER TABLE SCOTT.EMP SHRINK SPACE CASCADE statement. What is a prerequisite for shrinking the SCOTT.EMP table？（）A、 You must enable the block change tracking feature.B、 You must have enable the flashback feature.C、 You must use the OMF in your database.D、 You must define the tablespace of the SCOTT.EMP table for automatic segment space management.
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
How is block-change tracking enabled？（） A、 With alter database enable block change trackingB、 With alter system enable block change trackingC、 With an init.ora parameter changeD、 With an spfile parameter change
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
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.
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 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.
多选题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 USING FILE '/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?（）AThe block change tracking data will be used only from the next incremental 0 backup.BThe incremental backup will use change tracking data for accomplishing the backup.CThe incremental backup will not use change tracking data for accomplishing the backup.DThe block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.
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.
多选题To enable faster incremental backups, you enabled block change tracking for the database.Which two statements are true about the block change tracking file?（）AMultiple change tracking files can be created for a database.BThe change tracking file must be created after the first level 0 backup.CRMAN does not support backup and recovery of the change tracking file.DThe database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.
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How is block-change tracking enabled?（）AWith alter database enable block change trackingBWith alter system enable block change tracking CWith an init.ora parameter change DWith an spfile parameter change
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 are shrinking the SCOTT.EMP table by executing the ALTER TABLE SCOTT.EMP SHRINK SPACE CASCADE statement. What is a prerequisite for shrinking the SCOTT.EMP table？（）A You must enable the block change tracking feature.B You must have enable the flashback feature.C You must use the OMF in your database.D You must define the tablespace of the SCOTT.EMP table for automatic segment space management.
单选题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
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How is block-change tracking enabled？（）A With alter database enable block change trackingB With alter system enable block change trackingC With an init.ora parameter changeD With an spfile parameter change
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
多选题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.)AMultiple change tracking files can be created for a database.BThe change tracking file must be created after the first level 0 backup.CRMAN does not support backup and recovery of the change tracking file.DThe database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.