Also for the Enterprise/ Database server, Application sever, and Deployment server, we are still using Windows Server 2003.
What is the latest windows server version on which the E1 8.12 TR 8.96.40 can run ?
Oracle didn't introduce Windows 7 support until the 22.214.171.124 tools so I don't like your chances of getting 8.96 to run on anything higher than XP. Likewise, support for Windows server 2008 was introduced with the 8.98.1 tools so not sure you're going to get off 2003. Considering both Windows 7 and Windows Server 2012 are no longer supported by Microsoft I'd suggest you're on your own and it is probably not worth trying to update unless you're going to upgrade JDE.