Async I/O config/tuning on Linux
Date: Thu, 24 Jul 2008 23:26:17 +0800
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
"A 'No' uttered from the deepest conviction is better than a 'Yes'
merely uttered to please, or worse, to avoid trouble." Mohandas Gandhi Quotes