First of all, the Form that you wish to debug needs to make a call to Debug.Attach in PL/SQL (You might associate this with a menu option in the module.) Calling Debug.Attach; will pop up a dialog on the remote system containing the name of the SERVER and a port NUMBER. 

In the Forms Builder, use the Debug->Attach Debug menu option to display the "Attach Debug to" dialog. Enter the supplied machine and port number into this dialog. You will then be ABLE to debug the remote session. 

First of all, the Form that you wish to debug needs to make a call to Debug.Attach in PL/SQL (You might associate this with a menu option in the module.) Calling Debug.Attach; will pop up a dialog on the remote system containing the name of the server and a port number. 

In the Forms Builder, use the Debug->Attach Debug menu option to display the "Attach Debug to" dialog. Enter the supplied machine and port number into this dialog. You will then be able to debug the remote session.