TNS-12162: TNS:service name is incorrectly specified
Cause: The connect descriptor corresponding to the service name in TNSNAMES.ORA is incorrectly specified.
Action: Make sure there are no syntax errors in the connect descriptor. Particularly look for unmatched parentheses or stray characters. Any error in a TNSNAMES.ORA file makes it unusable. See the Oracle9i Net Services Administrator's Guide.