Pl/Sql Developer closed with External Exception Error C0000006

[Balram9]

Unable to Login with pl/sql developer ends with error.
External exception C0000006.

Kindly Suggest.

Snippet from Debug Sql.

LoadPreferences end
26-05-2016 12:08:11 FormCreate Logon.Execute
26-05-2016 12:08:18 TOracleSession PLSQLDevForm.Session Start Session.LogOn as User_Name@Service_Name
26-05-2016 12:08:24 TOracleSession PLSQLDevForm.Session End
Result = External exception C0000006
Duration = 6.234

 

[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?