topic Re: Call function in background task. in Application Development and Automation Discussions

Call function in background task.

Former Member — Tue, 08 Oct 2013 14:23:28 GMT

Hi,

I am calling one function module in background and with RFC destination. I am using IMPORTING parameter there. Using this importing parameter's value I am performing further action.

Actually I have received one warning message when I checked is 'Function in background task can't IMPORT any values.'

I wanted to know when I will run this program, shall I get value in IMPORTING parameter ?

Thanks.

Re: Call function in background task.

RaymondGiuseppi — Tue, 08 Oct 2013 14:40:07 GMT

To use importing parameter in the CALL FUNCTION statement, you must use a synchronous call.

Calling this FM IN BACKGROUND TASK will execute it in another LUW after the end of update tasks triggered by COMMIT WORK and you wont get the result back (Your transaction will be already completed at that time)

Are you sure you want to execute the FM with this mode, were you trying to execute an asynchronous call and get the result later for performance problem, if yes, look for syntax of CALL FUNCTION STARTING NEW TASK, in this mode you can trigger a form or method to RECEIVE results later in the caller program. Also manage a counter in global area to keep trace of the number of asynchronous call not yet completed, increment when starting a new task, and decrement after the RECEIVE statement, you could then wait in your code until this value reaches zero, no more task currently active.

Don't hesitate to use F1 key on Abap editor when you try new statements.

Regards,

Raymond

Re: Call function in background task.

Former Member — Tue, 08 Oct 2013 14:40:18 GMT

This message was moderated.

Re: Call function in background task.

Former Member — Tue, 08 Oct 2013 14:41:50 GMT

Hi,

You wont be getting any values in IMPORTING parameter in background mode.

Suggest you not to execute RFC in background as you have do further processing after getting IMPORTING parameter

Re: Call function in background task.

Former Member — Wed, 09 Oct 2013 07:41:53 GMT

Hi,

Previously I have written function module like below.

Call function 'ABC' in background task

destination XYZ

EXPORTING

IMPORTING

TABLES

IF sy-subrc = 0.

COMMIT WORK.

ENDIF.

Now...I have removed in background task and tested and got abap dump. After that I have removed COMMIT WORK also but got the same abap dump.

How I should write my code now ?

Thanks.

Re: Call function in background task.

former_member188251 — Wed, 09 Oct 2013 07:52:48 GMT

Great Explanation Raymond !

Re: Call function in background task.

former_member188251 — Wed, 09 Oct 2013 07:56:46 GMT

Can you post the dump ?