I have two OES SP2 servers I set up some time ago in VMWare and did not proceed beyond installation. Now, when I attempt to patch them it seems none of my eleven supposedly still active OES activation codes work. Do I need to upgrade to OES2 and forget about patching SP2, or what is the solution here?

Also, among these codes about half of them are upper case alphanumeric 14-byte codes and the rest are numeric and 9-bytes; what is the difference between these kinds of codes and which should I be using for activation in using RUG?