I\'m trying to connect to an Oracle 10g database using the built in Microsoft ODBC for Oracle driver. I want to use an dnsless connection, so I grab my connection string fr
You need to add an entry in your tnsnames.ora file for the service to which you want to connect. Alternatively, you can go to the gui interface for that file at
Start->Programs->Oracle->Configuration and Migration Tools->Net Configuration Assistant
and set up your oracle connection there. Then, ODBC will be able to resolve the service name.