Hi,
Basically it is correct.
It was long time ago :-), but according to my reply it seems that the the CR server had problems to read the tnsnames.ora file that was in shared folder on our internal network.
I copied it, to my pc, and changed the registry of the oracle client to point to the file on my pc, instead of the one in the network, and it was fine.
Can't explain why exactly it was solved, but ..... :-)
Good luck.