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=0 -+- 2004-09-08:1 -+- System Administration -+- Asynchronous I/O implementation for Red Hat Linux 9 .Relinking Oracle9iR2 to utilize AIO -+- derzhavets@hotmail.com -+- Boris Derzhavets -+-  -+- email -+- English -+-  -+- Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) -+- 5582
<h4>
     Installation of new kernel with AIO support and patched version of libaio library <br>
</h4>
<pre>
1. rpm -i kernel-2.4.20-35.9.i686.rpm from http://atrpms.com
2. rpm -i libaio-0.3.93-4.src.rpm
3. cd /usr/src/redhat/SOURCES
4. gunzip libaio-0.3.93.tar.gz
5. tar xf libaio-0.3.93.tar -C /tmp
6. cd /tmp/libaio-0.3.93/src
7. Modify files:

 compat-0_1.c
 io_queue_init.c
 io_submit.c

as advised in [1],[2]
8.  cd /tmp
9.  tar cvf libaio-0.3.93.tar libaio-0.3.93
10. gzip libaio-0.3.93.tar
11. cp libaio-0.3.93.tar.gz /usr/src/redhat/SOURCES
12. rpmbuild -ba  /usr/src/redhat/SPECS/libaio.spec
13. cd /usr/src/redhat/RPMS/i386
14. rpm -i libaio-0.3.93-4.i386.rpm
15. Check for file /usr/lib/libaio.so.1 to appear
16. cd /lib
17. ln -s /usr/lib/libaio.so.1 libaio.so
</pre>
<h4>
Relinking Oracle to utilize AIO for filesystems <br>
<br>
Shutdown Oracle:- <br>
</h4>
<pre>
1. cd $ORACLE_HOME/rdbms/lib
2. make -f ins_rdbms.mk async_on
3. make -f ins_rdbms.mk ioracle
4. cd $ORACLE_HOME/dbs
</pre>
<h4>
Add to init.ora files of instances currently installed on box:-  <br>
</h4>
<pre>
disk_asynch_io=true
filesystem_io=asynch
</pre>
<h4>
Startup Oracle <br>
<br>
References <br>
1.http://www.hyperic.net/support/tech-notes/oracle-setup.htm <br>
2.http://developer.osdl.org/daniel/libaio/patch.libaio-0.3-93.fix  <br>
</h4>