Re: Redo Log Placement - RAID 10 ok?
- From: Joseph Amalraj <joseph@xxxxxxxxxxxxxx>
- To: chupit@xxxxxxxxx, sharmakdeep_oracle@xxxxxxxxx
- Date: Tue, 10 Jan 2006 06:09:56 -0800 (PST)
I think you are saying redo instead on undo.
800GB/day is quite a lot. It depends on whether
your i/o subsystem can sustain this throughput. This can be found out from
the storage vendor.
Secondly the redo write rate depends at the rate at which the application
commits. Batch commits are much better.
Another option is trying use use unrecoverable loads, with
selective backup of tablespaces maybe by using split mirror.
RAID 10 is recommended. For this redo rate, it is better to allocate
separate set of disks only for redo.
Regards
Joseph Amalraj
Edgar Chupit <chupit@xxxxxxxxx> wrote:
On 1/6/06, Deepak Sharma wrote:
> Is RAID 10 ok for placing Redo Logs?
>
> It's for a very high write-intensive database,
> generating 800G of Undo/Day.
>
>
>
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Best regards,
Edgar Chupit
callto://edgar.chupit
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