Question on Parallel Processing in ABAP

Question

Hi Experts,
I am trying to process my records using Parallel Processing concept making calls to Remote Function Module.
So, in simple terms it would look as shown below
loop.
call function <rfc_module> creating new task with <taskname>
endloop.
1. In the above scenario say it created 5 tasks.
2. If one of the tasks have been failed because of timeout error then what happens to that task.
In the below link it says that the dialog work proces can run only for 300 seconds.
http://help.sap.com/saphelp_nw70/helpdata/en/fa/096e92543b11d1898e0000e8322d00/content.htm
3. How do we track the task that has not been finished successfully?
4. Does that throw an error?
Thanks,
Babu Kilari

Answer 1

Here is an exmple from HELP
TYPES: BEGIN OF task_type,
         name TYPE string,
         dest TYPE string,
       END OF task_type.
DATA: snd_jobs  TYPE i,
      rcv_jobs  TYPE i,
      exc_flag  TYPE i,
      info      TYPE rfcsi,
      mess      TYPE c LENGTH 80,
      indx      TYPE c LENGTH 4,
      name      TYPE c LENGTH 8,
      task_list TYPE STANDARD TABLE OF task_type,
      task_wa   TYPE task_type.
DO 10 TIMES.
  indx = sy-index.
  CONCATENATE 'Task' indx INTO name.
  CALL FUNCTION 'RFC_SYSTEM_INFO'
    STARTING NEW TASK name
    DESTINATION IN GROUP DEFAULT
    PERFORMING rfc_info ON END OF TASK
    EXCEPTIONS
      system_failure        = 1  MESSAGE mess
      communication_failure = 2  MESSAGE mess
      resource_failure      = 3.
  CASE sy-subrc.
    WHEN 0.
      snd_jobs = snd_jobs + 1.
    WHEN 1 OR 2.
      MESSAGE mess TYPE 'I'.
    WHEN 3.
      IF snd_jobs >= 1 AND
         exc_flag = 0.
        exc_flag = 1.
        WAIT UNTIL rcv_jobs >= snd_jobs
             UP TO 5 SECONDS.
      ENDIF.
      IF sy-subrc = 0.
        exc_flag = 0.
      ELSE.
        MESSAGE 'Resource failure' TYPE 'I'.
      ENDIF.
    WHEN OTHERS.
      MESSAGE 'Other error' TYPE 'I'.
  ENDCASE.
ENDDO.
WAIT UNTIL rcv_jobs >= snd_jobs.
LOOP AT task_list INTO task_wa.
  WRITE: / task_wa-name, task_wa-dest.
ENDLOOP.
FORM rfc_info USING name.
  task_wa-name = name.
  rcv_jobs = rcv_jobs + 1.
  RECEIVE RESULTS FROM FUNCTION 'RFC_SYSTEM_INFO'
    IMPORTING
      rfcsi_export = info
    EXCEPTIONS
      system_failure        = 1 MESSAGE mess
      communication_failure = 2 MESSAGE mess.
  IF sy-subrc = 0.
    task_wa-dest = info-rfcdest.
  ELSE.
    task_wa-dest = mess.
  ENDIF.
  APPEND task_wa TO task_list.
ENDFORM.