Parallel Processing with Asynchronous RFC PROBLEM

[omar_elkassi2]

Hi Expert,

i've an Issue will using a parallel processing, i've a specific program wich includes 17 steps of traitement, 6 of theses steps are prallelized (step 2/8/10/14/17). the call of step 10 raise a "communication_problem" exception, i've checked all point of RFC custumizing and developpement part that I know, without result (i've no idea about source problem). all other parallelized steps (before and after this one) are excecuted correctly. before every parallelize call i check available dialog work process in the systeme, in the step with problem i've 22 availabe WP. bellow some technical details related to my implementation :

1- the function used is marked as externally callable.

2- function call is executed via "CALL FUNCTION STARTING NEW TASK DESTINATION IN GROUP ".

3- RZ12 display 3 serever applications related to the used group wich is "parallel_generators".

4- all other steps in the program (wich use the same calling syntaxe) are correctly executed.

Any idea about this problem ?

thanks a lot in advance,

Omar

[former_member186741]

I think code snippets would be useful. If the program is big please try to put in the relevant sections....eg SPBT_INITIALIZE call, SPBT_GET_CURR_RESOURCE_INFO call, your exact call to the rfc, the feedback form code...anything else you can think of

[omar_elkassi2]

Hi Nei,

bellow some part of the used code :

*/ step 8 et 9 : (this step is executed correctly)

LOOP AT settlunits INTO settlunit.

*available system Work process

g_task = sy-tabix.

WHILE g_free_process IS INITIAL.

CALL FUNCTION 'RFC_GET_SYSTEM_INFO'

EXPORTING

destination = ''

IMPORTING

current_resources = g_free_process .

IF g_free_process IS INITIAL.

WAIT UP TO 3 SECONDS.

ENDIF.

ENDWHILE.

CLEAR g_free_process.

*the parameter P_GROUP = 'parallel_generators'

*configured via RZ12 and linked to 3 servers applications

CALL FUNCTION 'ZALSP023'

STARTING NEW TASK g_task

DESTINATION IN GROUP p_group

PERFORMING eot1 ON END OF TASK

EXPORTING

settldoc = settldoc

settlrun = settlrun

su = settlunit

steplev = g_steplev

improfiles = impprofiles5 " Résultat de ZCNTREEL

EXCEPTIONS

communication_failure = 1

system_failure = 2

RESOURCE_FAILURE = 3.

ENDLOOP.

**/ step 10 / 11 : (the call with error)

• all calls for in this part have a sy-subrc = 1

• => communication_failure

LOOP AT settlunits INTO settlunit.

*available system Work process

g_task = sy-tabix.

WHILE g_free_process IS INITIAL.

CALL FUNCTION 'RFC_GET_SYSTEM_INFO'

EXPORTING

destination = ''

IMPORTING

current_resources = g_free_process .

IF g_free_process IS INITIAL.

WAIT UP TO 3 SECONDS.

ENDIF.

ENDWHILE.

CLEAR g_free_process.

• before this call all WP in the system are free (22)

CALL FUNCTION 'ZALSP024'

STARTING NEW TASK g_task

DESTINATION IN GROUP p_group

PERFORMING eot2 ON END OF TASK

EXPORTING

settldoc = settldoc

settlrun = settlrun

su = settlunit

steplev = g_steplev

improfiles = impprofiles5 " Résultat de ZCNTREEL

EXCEPTIONS

communication_failure = 1

system_failure = 2

RESOURCE_FAILURE = 3.

ENDLOOP.

• last part of program which have other parallel call executed without errors***************************

Thanks a lot for responce,

Omar

[Clemenss]

code not formatted. g_free_process not set. [How to post code in SCN, and some things NOT to do...|;

Regards,

Clemens

Edited by: Clemens Li on Jul 27, 2011 12:57 PM

[former_member186741]

Use the 'message' clause after the exceptions as per this example from the help...it may give you a clue.....

DATA: MSG_TEXT(80) TYPE C. "Message text

...

• Asynchronous call to Transaction SM59 -->

• Create a new session

CALL FUNCTION 'ABAP4_CALL_TRANSACTION' STARTING NEW TASK 'TEST'

DESTINATION 'NONE'

EXPORTING

TCODE = 'SM59'

EXCEPTIONS

COMMUNICATION_FAILURE = 1 MESSAGE MSG_TEXT

SYSTEM_FAILURE = 2 MESSAGE MSG_TEXT.