How to take Level 0 and Level 1 Incremental Backups in Oracle DB?

Posted on: 2022-06-27 12:54:52


Incremental backups can be either level 0 or level 1. A level 0 incremental backup, which is the base for subsequent incremental backups, copies all blocks containing data, backing the datafile up into a backup set just as a full backup would. The only difference between a level 0 incremental backup and a full backup is that a full backup is never included in an incremental strategy.
A level 1 incremental backup can be either of the following types:
A differential backup, which backs up all blocks changed after the most recent incremental backup at level 1 or 0.

RMAN> BACKUP INCREMENTAL LEVEL 1 DATABASE; 


A cumulative backup, which backs up all blocks changed after the most recent incremental backup at level 0.


RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; # blocks changed since level 0 
 



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