ORA-12532:TNS:invalid argumnet

[LancePPierce]

I just purchased PL/SQL Developer ver 7.0.1.1066, installed it and am receiving:

ORA-12532:TNS:invalid argumnet, when I try to connect.

I user SQL *Plus 8.0 (client) and Oracle Discoverer Admin and Client prgrams using TNSNAMES with no problems.

Looking up the error messages (on the internet) did not clear it up for me.

?????

 

[Marco Kalter]

I notice you have 2 Oracle Homes:

- Ora6i (C:\oracle\Ora6i)
- OraHome92 (C:\oracle\ora92)
- ORANT (C:\oracle\orant)

The Primary Oracle Home (OraHome92) is an 8.0 version, which is unexpected considering the name.

Can you start PL/SQL Developer, go to Tools > Preferences > Options tab page, select "ORANT" or "Ora6i" from the Oracle Home selection list, restart PL/SQL Developer, and try again?