I am using a Visual Basic 4.0 application that is using Intersolv ODBC 2.11 Oracle7 drivers to connect to an Oracle 7.2 database. When the application tries to connect through the ODBC driver to the Oracle database I get an ORA-03121 no interface driver connected - function not performed. I am using SQL*Net 2.1 using TCP/IP protocol. I can connect to Oracle from SQL*Net or using the NET*Test utility from Oracle, but whenever I try to connect to the database through the application or using the Intersolv Compass utility I get this ORA-03121 error. Does anybody have any ideas on how this problem could be solved?