Transaction Process in oracle forms

Question

Hello Experts,            
                      I am new in Oracle forms and reports.I am using oracle forms 11g with weblogic server 10.3.5 at windows 7 platform.
I have 3 tables: Table A,table B,table C. there are some insert commands for table B and table C in a button say SAVE in oracle form.I have also an update command for Table A.
Button SAVE has code : insert into Table B; insert into Table C; update table A; If updating into table A is successful then all changes would be commited. If update command for Table A is unsuccessful Then all changes in database would be rollbacked. For this I have tried to use transaction but there is no support for autonomous transaction in oracle froms as my search. please help me how to do this. Thank You regards aaditya.

Answer 1

Why are you manually writing the DML statements to insert and update your tables?  Did you use the Forms DataBlock Wizard when you created your datablocks?  If not, I recommend you use the Wizard.  Oracle Forms is tightly integrated with the Oracle database.  This means Forms will perform a lot of the things you would normally have to write yourself; such as the SQL Statements to display data (SELECT), add new records (INSERT) or modify (UPDATE) and delete (DELETE) a record.
If you need to perform a ROLLBACK, understand that when you clear a block and don't save, Forms will automatically perform a ROLLBACK and release any locks it may have placed on a table/row.  Additionally, if you need to explicitly perform a rollback, you can do this when you call the CLEAR_FORM() built by passing "FULL_ROLLBACK" to the "rollback_mode" parameter.  For example: CLEAR_FORM(NO_VALIDATE, FULL_ROLLBACK);
If you must perform an Autonomous Transaction from Forms, the best and really only way to do this would be to create a Database Procedure that invokes the AUTONOMOUS TRANSACTIONS PRAGMA then call this procedure from your Form.
If you absolutely must write your own DML in your Form, then you can check the FORMS_SUCCESS system variable to see if the previous command executed successfully. Using Priyasagi's example, modify the code as follows:
DECLARE
  n_success NUMBER := 0;
BEGIN
insert into table_b
IF ( FORMS_SUCCESS) THEN
  n_success := n_success + 1;
END IF;
insert into table_c
IF (FORMS_SUCCESS) THEN
  n_success := n_success +1;
END IF;
update table_a
IF (FORMS_SUCCESS) THEN
  n_success := n_success +1;
END IF;
IF ( n_success =3 ) THEN
commit;
ELSE
  CLEAR_FORM(NO_VALIDATE, FULL_ROLLBACK);
END IF:
Craig...