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? (Choose two.)
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.
BLOCK CHANGE TRACKING file â if this was enabled, then a file called the block change tracking file kept information of all changes to blocks since the last backup. This file was read instead of all the blocks in the database to arrive at changed blocks and then these blocks were backed up.
If the sequence of events were different such as …
SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE â/mydir/
rman_change_track.fâ;
RMAN> BACKUP INCREMENTAL LEVEL 0 DATABASE;
RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;
then the INCREMENTAL LEVEL 1 CUMULATIVE backup would have used the block change tracking file.