SqlNetV2, odbc and MSQuery problem

I run into a problem with MSQuery talking to SqlNetV2 via Oracle's odbc driver. I choose "Open File" from MSQuery's pull down menu, it prompts me for my Oracle password and then I get an error:

ORA-12154: TNS: could not resolve service name.

however,
if I first choose "Table Definition", I log into Oracle successfully. Then I choose "Open File" to open a saved query things work fine.

The Oracle documentation on "ORA-12154" says to check the "TNSNAMES.ORA" file for accesiblity and syntax.

If the syntax is bad or the file can not be found why does the query work when I choose "Table Definition" first ?

Anyone out there have any idea what the fark is going on here ?

Thanks beforehand,
Kurt Received on Fri Jul 07 1995 - 00:00:00 CEST