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.
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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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 enabled block change tracking for faster incremental backups in your database. Which background process writes to the change tracking file？（）A、 RBALB、 CKPTC、 SMOND、 PMONE、 MMONF、 CTWRG、 DBWR
Which of the following BEST describes the difference between differential and incremental backups？（）A、 An incremental backup requires fewer tapes for restoration than a differential backup. B、 A differential backup tape takes less time than an incremental backup tape.C、 A differential backup requires fewer tapes for restoration than an incremental backup.D、 An incremental backup tape costs less than a differential backup tape.
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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.
Which type of backup backs up only data blocks modified since the most recent backup at the same level or lower？（） A、 Differential incremental backupB、 Different incremental backupC、 Cumulative backupD、 Cumulative incremental backup
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.
单选题What is one reason the customer should install IBM DS8000 Virtual Private Network （VPN） technology for the Call Home function（）Ato avoid using a more expensive dial-up modemBto load new licensed internal codeCto achieve more efficient and faster problem resolutionDto enable capacity on demand
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Which of the following BEST describes the difference between differential and incremental backups？（）A An incremental backup requires fewer tapes for restoration than a differential backup. B A differential backup tape takes less time than an incremental backup tape.C A differential backup requires fewer tapes for restoration than an incremental backup.D An incremental backup tape costs less than a differential backup tape.
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 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You enabled block change tracking for faster incremental backups in your database. Which background process writes to the change tracking file？（）A RBALB CKPTC SMOND PMONE MMONF CTWRG DBWR
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.