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Re: lgwr performing direct i/o on unix platforms?

From: Connor McDonald <connor_mcdonald_at_yahoo.com>
Date: Thu, 20 Jan 2005 15:30:02 +0800
Message-ID: <41EF5DFA.4A8F@yahoo.com>


Frank wrote:
>
> Hello,
>
> a question recently came to my mind: is the lgwr process performing
> direct I/O on writing the redo logs on disk (direct i/o = no filesystem
> cache is used)? In other words, is it using a write-through-cache when
> writing the redo's on disk? On the unix platform it is.
>
> Regards,
> Frank

on most unixes you'll need to mount the filesystem that the redo logs are on as direct IO, or use raw

hth
connor

-- 
Connor McDonald
Co-author: "Mastering Oracle PL/SQL - Practical Solutions"
Co-author: "Oracle Insight - Tales of the OakTable"

web: http://www.oracledba.co.uk
web: http://www.oaktable.net
email: connor_mcdonald_at_yahoo.com


"GIVE a man a fish and he will eat for a day. But TEACH him how to fish,
and...he will sit in a boat and drink beer all day"

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Received on Thu Jan 20 2005 - 01:30:02 CST

Original text of this message

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