[no subject]
- From: <jtesta@xxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 4 Jun 2004 12:54:23 -0400 (EDT)
-------- Original Message --------
Subject: RE: Incremental Export in Oracle 9i
From: <jtesta@xxxxxxxxxx>
Date: Fri, June 4, 2004 12:52 pm
To: <oracle-l@xxxxxxxxxxxxx>
Dennis, one small clarification, you can do incremental rman backups in
noarchivelogmode but the difference being you can only restore to the
last rman backup(you'd have ot restore to the last level 0 and then
apply incrementals) and never be able to get to point of failure. Since
a noarchivelogmode database has to be shutdown, you'd be at a clean spot
for recovery(and rman is smart enough to not let you do a backup with a
shutdown abort as the last thing since the db has to be in mount state
anyways), last i checked, its been about 6 months since i played with
rman.
joe
original message below
Hamid
If you are thinking that incremental export would just export the
> new
rows in a table. It doesn't. It just detects tables that have changed
since the last export and exports those tables.
As Joe points out, RMAN can do incremental backups, but you must
> have
Enterprise Edition and run in archivelogmode.
If you want just part of a table, you could do something better on
your
own. Since 8i export has a parameter QUERY. If you have a timestamp
column for when a table is inserted or updated, then you could do a
partial export of the table for just the new or changed rows. Again, I
have done exports with the QUERY parameter, but haven't designed an
incremental backup system based on that.
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams@xxxxxxxxxxxxx
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