If its a basic installation of WLS & not a part of FMW infra, it should work.Else you would also need the database repositories created.
Even then,below are some things that you would have to take care.
1) OS package dependencies if any.OS packages on your 6.x should ideally be there on your 7.x system as well.
2) If your WLS servers are configured to listen to any specific hostname/ip,you would have to configure that hostname/ip in the new server.
Or else,you would have to change the host references in a plethora of files inside the domain,oracle_home etc
Thank you for the reply, I very much appreciate it. Yes, I believe it is a basic install of WebLogic with basic clustering configuration.
I found the following documents, do they apply for WebLogic? As long as the new host/VM, meets installation requirements of 18.104.22.168.x / RHEL 7 below, should we be good?
"Moving Oracle Fusion Middleware to a New Host: section:
22.214.171.124 Linux installation requirements (Red Hat Linux 7.x)
chghost is a utility that was released in FMW 126.96.36.199.I have personally not used it,but this definitely seems to be changing the host references.
However,this is for FMW installation.Hence,if you have installed weblogic using WLS generic installation & not FMW infrastructure installer,i don't think you will be having the chghost.sh script in $ORACLE_HOME/oracle_common/bin/
Please check it in your environment.If you have,please go ahead with using the same along with copyBinary and pasteBinary scripts as per the document.