Re: Redhat linux and async io

On 3 Apr 2006 20:28:56 -0700, wagen123_at_yahoo.com wrote:

>Hi,
>
>Oracle10g 10.2.0.1 (32 bit)
>RHEL 4 update 3 (32 bit)
>
>* I have installed the async io rpm's
>$ rpm -qa | grep aio
>libaio-0.3.102-1
>libaio-devel-0.3.102-1
>
>Questions:
>1) How do i verify/check if the async io is enabled/loaded in RHEL
>kernel?
>I solaris I used to
>$ modinfo | grep kaio
>142 1344ccb 4916 178 1 kaio (kernel Async I/O)
>142 1344ccb 4916 178 1 kaio (kernel Async I/O for 32 bit com)
>
>One of the Metalink docs says check
>$ cat /proc/slabinfo | grep kio

First, you need to set the async parameter to true on oracle side (not sure if it stayed the same in 10g)
You might also need to set the filesystemio_options

Lastly, you might be able to verify by strace'ing dbwr while instance is starting up.

>
>2) How do I determine if the redlat linux installed is 32 or 64 bit
>version?

$uname -p
x86_64
(this is AMD, migbt be different for intel 64bit)

you can verify bits of oracle by just logging in or $file $ORACLE_HOME/bin/oracle

>Is getconf LONG_BIT the only way to determine this or will uname -a
>show something specific.

What's wrong with getconf LONG_BIT? seems to work

.......
We run Oracle 9.2.0.6 on RH4 AMD
remove NSPAM to email Received on Wed Apr 05 2006 - 13:42:25 CDT