[Forms 3.0] How do you capture an ORACLE error code?

	Please help me solve my problems with error handling in
	SQL*Forms 3.0. (Server here is 7.0.15)

	1. DISPLAY_ERROR

	This packaged procedure returns to the screen specific information
	about, for example, FRM-40508.  It comes in useful when you want
	to know specifically why Forms couldn't perform the DML operation.
	The problem is, when you have a very long DML statement in error,
	it pushed the error code portion out of the page (and there's no
	scroll facility).  Is there any way to get the error code at all?

	2. PRAGMA EXCEPTION_INIT

	When you know in advance what ORACLE error code to expect, you
	can declare your own exception and handle it via PRAGMA EXCEPTION_
	INIT.  The trouble I'm having is, when you declare it in a trigger 
	and an error occurs in a packaged procedure that is called by that
	trigger, I can't handle it, as the packaged procedure seems to raise
	some exception within itself.  The code looks something like this:

	declare
	foreign_key_violation	EXCEPTION;
	PRAGMI EXCEPTION_INIT(foreign_key_violation, -2291);
	begin


	....

	COMMIT_FORM;


	....

	EXCEPTION
		WHEN foreign_key_violation THEN
		MESSAGE ('No corresponding parent record.');
	END;

	When COMMIT_FORM does not succeed due to ORACLE error 2291, it 
	simply returns FRM-40508.  The user would not have a clue as to
	what the ORACLE error was.  This does look logical, but I need
	some workaround.  Please help.

	I will greatly appreciate an e-mail reply, as the news feed here
	is 7-10 days behind.  Thank you.

							Yoichi Tamura
							y-tamura_at_nri.co.jp