OWS-05566 caused by ORA-12202

[Rhojel_Echano]

I would like to make an application in OAS 408 to connect to an 817 database. When I try to create a DAD to establish this connection, I get this error: "OWS-05566 caused by ORA-12202: TNS internal navigation error". Can anyone enlighten me on what these errors mean and how to work around it? DB is 8.1.7.1.1 on WinNT 4 SP6a, Net version 8.1.7.1.0. Application Server is OAS 408 on WinNT 4 SP6a, Net version 8.0.5. Any help would be appreciated. Best Regards, Rhojel Echano