Database Reference
In-Depth Information
Figure 10-5: Zoomed area of Figure 10-1 with focus on RMAN based
Online/Offline Backup. There are two different ways to do such type of
backup. RMAN can run either by using target database control file or
having its own database called Recovery Catalog database. We can
create Backup Sets and Image Copies using RMAN. Oracle
recommendation is to use RMAN with Recovery Catalog Database and
not with target database control file. RMAN backup can only be
performed when the database is either open or mount state.
There are two places you can use as a mean for RMAN
repository. First is the target database control file and the second
is the Recovery Catalog Database. You can use RMAN with
either of these repositories. It means that you can run RMAN by
using target database control file as RMAN's repository or you
can run it having its own separate database called RMAN
Recovery Catalog database.
Whatever RMAN needs to write it appends to the control file
and would not overwrite or delete any stuff on it. It would be
having its own section at the end of target database control file.
Oracle recommendation is that one should prefer Recovery
Catalog way instead of target database control file.
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