Step 3
Type into Data Source Name Field (Data Source Name is user define Name)
Type into User Name Field (User Name is SCOTT )
Type into Server Field ( Server Name is ORAMCA)
Click On Ok Button 
Click On OK Button
Step -II 3
Step 3
Type into Data Source Name Field (Data Source Name is user define Name)
Type into User Name Field (User Name is SCOTT )
Type into Server Field ( Server Name is ORAMCA)
Click On Ok Button 