Trying to Install ZAM 7 Collection Server on a new server in our DMZ. Have configured Oracle to talk to the Oracle DB on the ZAM Management Server and it all works.

However when trying to install the Collection Server and pointing it to my Oracle DB instance (zamdb) ... I get this error message

"Unknown Class Key - FATAL ! Persistence Layer detected an incompatibility between Objects and Schema!"

Can't seem to find out what the cause is.

Oracle installed on New Collection Server is whereas the current collection server and ZAM Parent Server is

Anybody have a clue as to what the error message means?

Thanks in Advance..
Also the ZAM Server 7 has been patched with some ZAM patches.