| 10g Raw disk and redo logs [message #132792] |
Tue, 16 August 2005 04:31  |
oztraxed
Messages: 1
Registered: August 2005
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Junior Member |
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Hi, we are about to instal 10g RAC on AIX box on a SAN with raw disks.
My questions concerns where to place the redo logs. I am sure we cannot put them on raw disks as I can;t see how we can move them to a file system directory for archiving?
Has others set up 10g on raw and how they have places their redo logs, was it on a file system or raw?
Thanx
Oz Tee
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| Re: 10g Raw disk and redo logs [message #132835 is a reply to message #132792] |
Tue, 16 August 2005 07:24  |
mjschwenger
Messages: 137
Registered: July 2005
Location: US
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Senior Member |
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My redo logs are on raw devices. I have made a couple of tests to put them on the file system or raw devices and it looks that I get a better performance in the second case. The same case is with the DB2 database we have - it does better if it's install on raw.
I have a lot of transactions avarage 3500/sec, but very little rollbacks - a lot of writes, much less reads.
At least this is my experience.
When archived, the files can be moved automatically for you- depend where you are going to specify your archiving directory.
good luck.mj
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