Manual Commit using Process Flows

Question

Hi,
I have 2 mappings, each with commit control property set as 'Manual'. I created a process flow to run these mappings. Following the instructions in the OWB user guide, I added a single SQLPLUS activity in the process flow, and entered the following in the 'SCRIPT' parameter of the SQLPLUS activity :
DECLARE
status VARCHAR2(30);
BEGIN
SCHEDULER_TESTING.main(status);
IF status!='OK' THEN
ROLLBACK;
ELSE
ERROR_LOG_TESTING.main(status);
IF status!='OK' THEN
ROLLBACK;
ELSE
COMMIT;
END IF;
END IF;
END;
When I deploy and run this process flow, it shows the execution as successful (COMPLETE:OK) in the control center. But when I check the target tables, no records have been inserted.Also, when I check the execution job report in the repository browser, it shows the status as 'Complete:Failure' ,without displaying any error message.
There is no problem with the mappings, as executing them independantly gives the desired result.
Any idea what is going wrong?
Thanks and Regards,
Amit

Answer 1

OK, well from the process flow perspective your script exited normally which is why it shows the sqlplus activity as having completed properly. You would need an exit variable in the script that the activity's outgoing transformation was checking to in order to have the process flow know that a failure occurred. Because whether the mappings succeed or not is not known to the process flow from this script.
But the other problem, of course, is why the script isn't running the process flows properly, but you haven't any way to determine this without doing some logging from the script.
Perhaps, as a quick and dirty testing idea you could create a table proc_log(msg varchar2(500) and amend your script to:
DECLARE
status1 VARCHAR2(30);
status2 VARCHAR2(30);
BEGIN
SCHEDULER_TESTING.main(status1);
IF status!='OK' THEN
ROLLBACK;
ELSE
ERROR_LOG_TESTING.main(status2);
IF status!='OK' THEN
ROLLBACK;
ELSE
COMMIT;
END IF;
END IF;
insert into yourSchema.proc_log('Status for scheduler_testing: '||status1);
insert into yourSchema.proc_log('Status for error_log_testing: '||status2);
commit;
EXCEPTION
when other then
rollback;
insert into yourSchema.proc_log('EXCEPTION: '||sqlerrm);
commit;
END;
just to try and see what is happening in there.
Now, to put an exit variable into your script you would need to do something like:
variable exec_return_code number;
DECLARE
-- we'll use 0 for success and 1 for failure
returncode number := 0;
status VARCHAR2(30);
BEGIN
SCHEDULER_TESTING.main(status);
IF status!='OK' THEN
returncode := 1;
ROLLBACK;
ELSE
ERROR_LOG_TESTING.main(status);
IF status!='OK' THEN
returncode := 1;
ROLLBACK;
ELSE
COMMIT;
END IF;
END IF;
:exec_return_code := returncode;
END;
exit :exec_return_code;
I haven't tried this yet, but it would be the only way I could think of to have any sort of success/failure returned from a sqlplus activity to the process flow.
Cheers,
Mike