Can an in place operating system upgrade be performed on the STAT RHEL 6.10? Want to upgrade to Linux 7.7?

Can an in place operating system upgrade be performed on the STAT RHEL 6.10? Want to upgrade to Linux 7.7?
Currently we are running STAT 6.3.0HF-d for PeopleSoft, and 6.1 for E-Business Suite on the same server.