RE: incremental backups

  • From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
  • To: <oracledba.williams@xxxxxxxxx>, <ryan_gaffuri@xxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
  • Date: Fri, 2 Mar 2007 15:22:49 -0700

I only use cumulative incrementals, not differentials, so there is never
more than one incremental to apply.  This gives me a good mix of
fast/small backups and fast restores and works great for me, but like
everything - it depends.  I run weekly L0 incrementals, nightly L1
incrementals and hourly archive logs - all straight to tape via
Netbackup.  I use the change tracking log so the L1 incrementals only
take about 3 minutes for a 150GB database, but of course that depends on
the number of blocks you change.  For most systems, only a very small
percentage of blocks are changed though.  Another consideration is that
incrementals are only available with Enterprise Edition, but I think
that may have changed with 10g.
 
Regards,
Brandon

________________________________

From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Dennis Williams

 
I think he has a point that too long a chain of incremental backups
could create a problem. 

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