Not sure if i'm right here but i'll give it a try.

We have a windows server 2012 with oracle db installed. server is productive and we backup it with veeam backup and replication v8. the idea is now to "clone" the productive server and use it as testsystem. Because we have it on a veeam backup i thought about doing the following:
1. Restore the Oracle DB server with a new name and set the nic as disconnected
2. Boot restored server and change its hostname and join it to a workgroup (because nic is disconnected this should not affect productive system)
3. After reboot, change IP address and rejoin the server with new name to the same domain as before.
4. Oracle Admins have to check the DB and maybe have to do some additional steps...
My concern is: join it to the domain with a new hostname should result in a new "domain sid" for this server. But it does not in general create a new sid on the server itself. But is that a problem nowadays? I'm not sure if i should run sysprep after step one described above. but i think if i sysprep, it messes up oracle installation completely.
has anybody here done something similar before?
Thanks