This is a very common problem.
Most cable and DSL ISPs don't provide real DNS names --> Client (Forms 6i)-to-Server connection via TNS-listener will not work.

Solution: get a real DNS name for your PCs and make changes to your tnsnames.ora / listener.ora / sqlnet.ora

Be sure to read this msg by Padmam - http://www.dbasupport.com/forums/sho...threadid=17178

[Edited by Xenon on 04-25-2002 at 09:31 AM]