How to call sequence in Oracle Forms

Question

Hi,
I am using Oracle Developer Suite 10g. I want to call a sequence that I have created in SQL Plus. When I try to call the sequence in a trigger for a command button (WHEN-BUTTON-PRESSED) the compiler tells me that the sequence cannot be used in this context. I am passing the sequence to a procedure as a parameter. Let me show you some code:
My table is:
Location(loc_id, loc_name);
primary key is loc_id
My sequence is:
CREATE SEQUENCE loc_seq
MINVALUE 1
MAXVALUE 999999
START WITH 1
INCREMENT BY 1
CACHE 20;
My procedure is:
CREATE OR REPLACE PROCEDURE loc_change (v_loc_id IN Location.loc_id%TYPE, v_loc_name IN Location.loc_name%TYPE) AS
BEGIN
INSERT INTO Location(Location.loc_id, Location.loc_name)
VALUES (v_loc_id, v_loc_name);
COMMIT;
END loc_change;
My WHEN-BUTTON-PRESSED trigger is
BEGIN
loc_change(loc_seq.nextval, :DATA_BLOCK.VARIABLE);
END;
All that I need to do is generate a random number for the parameter passed that is the primary key for Location, from within my trigger. Any thoughts?

Answer 1

This
DECLARE
  nSeq number;
BEGIN
  select loc_seq.nextval
  into nSeq
  from dual;
  loc_change(nSeq, :DATA_BLOCK.VARIABLE);
END;should do the job...
you can also put the fetching of the sequence into the database procedure. if you have DB Version 11g, you can reference the sequence simply by this:
nSeq := loc_seq.nextval;in prior 11g you have to fetch it using select into from dual.
regards