Instead of files being backed up to tape
drives, the backups will instead be written to other disks on the same server. Those disks should
be targeted for backups by the systems management personnel??™s regular file system backups. The
DBA does not have to run a separate tape backup job. However, the DBA does need to verify that
the systems management team??™s backup procedures executed correctly and completed successfully.
If your database environment includes files outside the database, such as datafiles for external
tables or files accessed by BFILE datatypes, then you must determine how you are going to back
those files up in a way that will provide consistent data in the event of a recovery. The backups of
these flat files should be coordinated with your database backups and should also be integrated
into any disaster recovery planning.
CHAPTER
12
Using Recovery
Manager (RMAN)
417
418 Oracle Database 11g DBA Handbook
n Chapter 11, we discussed a number of different ways in which we can back
up our data and protect the database from accidental, inadvertent, or deliberate
corruption. Physical backups of the database ensure that no committed transaction
is lost, and we can restore the database from any previous backup to the current
point in time or any point in between; logical backups allow the DBA or a user to
capture the contents of individual database objects at a particular point in time, providing an
alternative recovery option when a complete database-restoration operation would have too big
an impact on the rest of the database.
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