error in PLSQL developer

[ajaykumarkona]

Hi Experts,

I have upgraded my Operating Syatem from Vista to Win7. I have SQL nav version but is not supported on Win7. So I have installed PLSQL developer. When I try to connect it's giving the error connection not open. But when I tried the same credentials with SQLPLUS it's working fine.

 

[Marco Kalter]

Can you go to Help > Support Info, press the 'Copy all pages' button on this info screen, and paste this text into an e-mail reply?