RE: recovery from RAW partitions

From: Bobak, Mark <Mark.Bobak_at_proquest.com>
Date: Tue, 17 Jun 2008 00:12:46 -0400
Message-ID: <667C10D184B2674A82068E06A78382B51ECEB9B7@AAPQMAILBX01V.proque.st>

Let's try this again. What does "I was talking to a DBA today who insisted that performing a recovery with a RAW partition." mean? What are you asking for agreement/disagreement on?

As to the performance improvement, if any, of raw devices, well, as with many things, it depends.

Personally, I use raw partitions for the following reasons:

• AIO and DIO capable
• no memory wastage caching datafile blocks in filesystem cache
• Sys admin staff is comfortable w/ raw partitions
• In my environment, there's no downside

-Mark

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From: oracle-l-bounce_at_freelists.org [oracle-l-bounce_at_freelists.org] On Behalf Of Rick Ricky [ricks12345_at_gmail.com] Sent: Monday, June 16, 2008 11:01 PM
To: oracle-l_at_freelists.org
Subject: recovery from RAW partitions

I was talking to a DBA today who insisted that performing a recovery with a RAW partition. He didn't really explain why. Does anyone agree with this? If so why? He also said that RAW partitions only give about a 2% performance improvement. If so, why would you want to use them (other than with voting disks and OCR in RAC).

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Received on Mon Jun 16 2008 - 23:12:46 CDT