RE: Rman Parallelism param
- From: "John Hallas" <john.hallas@xxxxxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 26 Mar 2004 16:51:42 -0000
What happens when you try it with disk (or even tape). Certainly disk and
sbt are valid parameters to the command.
I am not sure when writing to tape that a parallelism of 4 would speed
things up all that much as the bottleneck will be getting the data onto the
tape via the channels, not reading from disk
Never tried it and just finished a position where I would have had a chance
to - c'est la vie. Hence about 6 posts in 2 days, which equals my previous
6 months worth of contributions.
There are a lot of new config parameters in 9i that do reduce the size of
scripts but I don't necessarily think that was a big overhead anyway. I
think I preferred to see a script with a allocate channel commands and all
the other details in rather than assuming that the parameters had been set
by default
John
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On
Behalf Of Mercadante, Thomas F
Sent: 26 March 2004 16:23
To: oracle-l@xxxxxxxxxxxxx
Subject: Rman Parallelism param
All,
Within Rman, I can : CONFIGURE DEVICE TYPE DISK PARALLELISM 2;
Does anyone know what this does? The docs only mention setting this for
tape. I am hoping that I can spin up several rman backup processes at once
to speed up a disk backup.
any thoughts would be appreciated - thanks!
Tom Mercadante
Oracle Certified Professional
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