[Centos] What is the update version of CentOS-2?

[jack@xxxxxxxxxxxxxxxxxxxxxxx (jack@xxxxxxxxxxxxxxxxxxxxxxx)]

I'm pretty sure that I'm not asking the question correctly, but I'd like to
host a database that is supported with RedHat Enterprise Linux 2.1 with
Update 2 (Q2 2003), so I'm assuming CentOS-2 fills the bill. However, when
I run this application, I get some weird CPU cycling that I can't trace to
any specific task.
So, perhaps my install is not as current as I think it is. I have run yum
for both upgrade and update.
Thanks, Jack
 Jack@xxxxxxxxxxxxxxxxxx