Async I/O config/tuning on Linux

From: Hemant K Chitale <hkchital_at_singnet.com.sg>
Date: Thu, 24 Jul 2008 23:26:17 +0800
Message-Id: <200807241526.m6OFQVh5009085@smtp14.singnet.com.sg>

We get occassional "WARNING:ORACLE PROCESS RUNNING OUT OF OS KERNEL

I/O RESOURCES (1) " messages in a test environment (10.2.0.2, 64bit, 
RHEL AS4) where we are testing Async IO Patch #6836997  .  This patch 
contains the fix for Bug#6087207 and other Async IO bugs.

We are also considering applying the Patch for Bug#6656824 (DBWR crashes after one-off fix for 6087207).

However, what Linux parameters should also be tuned ? aio-max-size doesn't exist in RHEL 4 . What values should "aio-max-nr" and
"aio-nr" be configured for ?

Hemant K Chitale
http://hemantoracledba.blogspot.com

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merely uttered to please, or worse, to avoid trouble." Mohandas Gandhi Quotes
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Received on Thu Jul 24 2008 - 10:26:17 CDT