Oracle Database 12c: Advanced Administration — Question 167

Examine the command used to perform an incremental level-0 backup:
RMAN>BACKUPINCREMENTALLEVEL0DATABASE;
To enable block change tracking, after the incremental level 0 backup, you issue the command:
SQL>ALTERDATABASEENABLEBLOCKCHANGETRACKINGUSING
FILE'/mydir/rman_change_track.f';
To perform an incremental level-1 cumulative backup, you issue the command:
RMAN>BACKUPINCREMENTALLEVEL1CUMULATIVEDATABASE;
Which two statements are true in the preceding situation?

Answer options

• A. The block change tracking data is used only from the next incremental backup.
• B. The incremental level 1 backup fails because a block change tracking file Is created after the level 0 backup.
• C. The incremental level 1 backup does not use change tracking data for accomplishing the backup.
• D. The block change tracking file scans all blocks and creates a bitmap for the blocks backed up in the level 0 backup.
• E. The block change tracking data is used for the next incremental level 1 backup only after the next level 0 backup.

Correct answer: C, E

Explanation

The correct answer C is accurate because the incremental level-1 backup does not utilize block change tracking data created after the level-0 backup. Answer E is also correct as it states that the block change tracking data is relevant only for the next incremental level-1 backup that follows another level-0 backup. The other options are incorrect because they misinterpret the usage of block change tracking data or the behavior of the incremental backups.