As reference, if you want the details of the requirements to install OAS, you can check this: https://docs.oracle.com/en/middleware/fusion-middleware/12.2.1.4/sysrs/system-requirements-and-specificat…

By the way: installing OAS 6.4 now? OAS 2023 (aka 7.0) has been released, do you really want to miss a full year of features? You just need to replace the OAS install file, everything else is exactly…