Re: diff between incremental and archive backups

  • From: Stefan Knecht <knecht.stefan@xxxxxxxxx>
  • To: Andrew Kerber <andrew.kerber@xxxxxxxxx>
  • Date: Sun, 15 Nov 2015 16:03:16 +0700

I just wanted to add that SE can - and as far as I am aware always has been
able to - do incremental backups. What is restricted to EE is the block
change tracking feature, which allows incremental backup processes to only
read the blocks that have changed.

Stefan


On Sat, Nov 14, 2015 at 7:20 AM, Andrew Kerber <andrew.kerber@xxxxxxxxx>
wrote:

Of course, you can't do incrementals on standard edition. Or did they
change that recently?

Sent from my iPhone

On Nov 13, 2015, at 2:36 PM, Mark W. Farnham <mwf@xxxxxxxx> wrote:

Well put.



Consider also that if a given block is modified many times, then the size
of the deltas in the redo stream likely exceeds the size of the one current
version of the block that will need to be written to the incremental backup
and applied in the course of rolling forward from the full backup through
any incrementals.



Having the two possible recovery scenarios might allow you to minimize the
recovery time depending on the texture of updates to your database.



mwf



*From:* oracle-l-bounce@xxxxxxxxxxxxx [
mailto:oracle-l-bounce@xxxxxxxxxxxxx <oracle-l-bounce@xxxxxxxxxxxxx>] *On
Behalf Of *Sandra Becker
*Sent:* Friday, November 13, 2015 2:10 PM
*To:* Brian.Zelli@xxxxxxxxxxxxxxx
*Cc:* oracle-l (oracle-l@xxxxxxxxxxxxx)
*Subject:* Re: diff between incremental and archive backups



Depending on how many archivelogs your database writes in a week, that
could be a lot of logs to apply. Consider if you have the space to store
them, or time to restore them to disk, and the time to apply all the logs
vs. doing incremental backups and applying fewer logs. Just something to
consider.

Sandy B.



On Fri, Nov 13, 2015 at 11:59 AM, Zelli, Brian <
Brian.Zelli@xxxxxxxxxxxxxxx> wrote:

So we were having a discussion about rman incremental backups. And the
question came up that if I do an rman full once a week and then rman back
up of the archive logs the rest of the week, that’s all I need to do a
point in time restore. I don’t have to do incremental backups. Is this an
accurate assumption?



Brian






This email message may contain legally privileged and/or confidential
information. If you are not the intended recipient(s), or the employee or
agent responsible for the delivery of this message to the intended
recipient(s), you are hereby notified that any disclosure, copying,
distribution, or use of this email message is prohibited. If you have
received this message in error, please notify the sender immediately by
e-mail and delete this email message from your computer. Thank you.




--

Sandy B.


Other related posts: