Asynchronous I/O implementation on Red Hat Linux 9 and relinking Oracle9iR2.

["Boris Derzhavets" <derzhavets@xxxxxxxxxxx>]

Asynchronous I/O doesn't come along with Red Hat Linux 9 automatically.
It's affecting performance of any database server working in Red Hat Linux 
environment,
which is not RHEL Advanced Server or Entry Level Server.
To fix the issue we start with kernel upgrade (http://atrmps.com) 
,supporting AIO,
and libaio upgrade.

rpm -i kernel-2.4.20-35.9.i686.rpm
rpm -i libaio-0.3.96-3.i386.rpm \
    libaio-devel-0.3.96-3.i386.rpm

Restart RHL9
Login as oracle:-

Shutdown Oracle
cd $ORACLE_HOME/rdbms/lib
make -f ins_rdbms.mk async_on
make -f ins_rdbms.mk ioracle
Startup Oracle.

Login to OEM Console.
Modify "SPfile" screen:-

 disk_async_io=true
 filesystemio_options=asynch

Click "apply".
Restart instance.
We are done with AIO upgrade.

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