New RMAN Syntax: Backup Incremental level 1 WITH TAG '<tagname>' Database (Doc ID 781519.1)

Last updated on DECEMBER 22, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.4 and later
Information in this document applies to any platform.

Goal

The fix for <BUG 6459358>:Oracle - BACKUP FOR RECOVER OF COPY CREATES EXCESSIVELY LARGE INCREMENTAL BACKUPS,  adds new syntax to the backup command
and allows incrementals to be based on previous incremental rather than the datafilecopy and 'links' together all backups with the same TAG allowing different incremental backup cycles to run concurrently without interfering with one another.

Without this fix, the incremental is based on the datafilecopy:  if the copy is maintained several days BEHIND in time to allow for point in time recovery, this will cause the incrementals to be cumulative , as the checkpoint scn of the datafilecopy is unchanging.    This change in syntax from <BUG 6459358> causes the incremental to be based on the previous incremental with the same tag resulting in a smaller differential backup.


Solution

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