Updateable PK in tabularform

Question

Hi
How to update a primarykey useing a tabular form?
Ex
Table Batch
PK ARTICLE_ID + BATCH_CODE
and 5 additional columns
BATCH_CODE is updateable
when trying to update/change BATCH_CODE I recieve
ORA-20001: ORA-20001: Current version of data in database has changed since user
Is it possible to have this functionality or should I consider an alternative solution
Regards
Gunnar

Answer 1

Gunnar,
Since using APEX my standards around tables is they are PK'd by Sequence generated via a Trigger. As you develop forms, you then always choose the "exiting sequence" option and then select the appropriate Sequence.
Sample Code:
Create a Sequence:
CREATE SEQUENCE myschema.my_seq
   START WITH 0
   INCREMENT BY 1
   MINVALUE 0
   CACHE 20
   NOCYCLE
   NOORDERUpdate Trigger:
DROP TRIGGER myschema.bchg1_my_tbl;
CREATE OR REPLACE TRIGGER myschema."BCHG1_MY_TBL"
   BEFORE INSERT OR UPDATE
   ON myschema.bchg1_my_tbl
   FOR EACH ROW
BEGIN
   --  Description: Update lst_updt_dt and lst_updt_id.
   --  Maintenance:
   --  Date        Actor           Action
   --  ====        =====           ======
   --  10-Jun-2008 J. Wells         Create.
   SELECT nvl( v( 'app_user' ), user ), sysdate
   INTO   :new.lst_updt_id, :new.lst_updt_dt
   FROM   dual;
END;
/Insert Trigger:
DROP TRIGGER myschema.bins1_my_tbl;
CREATE OR REPLACE TRIGGER lasdev."BINS1_MY_TBL"
   BEFORE INSERT
   ON my_tbl
   FOR EACH ROW
BEGIN
   --  Description: Insert creation_dt, creation_id,
   --              lst_updt_dt and lst_updt_id
   --  Tables;         Name                    Action
   --  Maintenance:
   --  Date        Actor           Action
   --  12-AUG-2010 J. Wells         Create.
   :new.creation_id := nvl( v( 'app_user' ), user );
   :new.creation_dt := sysdate;
   :new.lst_updt_dt := :new.creation_dt;
   :new.lst_updt_id := :new.creation_id;
   SELECT my_seq.nextval
   INTO   :new.my_seq
   FROM   dual;
END bins1_my_tbl;
/Jeff