Thanks guys,
Dave, I will try the manual jdbc connection in the environment and report back. Excuse my ignorance but in terms of the listener registration, would this be via TNSNAMES? The listener LSNRCTL is started and shows (using STATUS) the Database(orcl.localdomain in this case).
I see though that while Centos is not listed that it is the platform being used fro the pack that was being "distributed" at Oracle World. What would be the best version to download? BTW, Fedora 16 seems to work fine.
Regards
John