Call function - New task

Hi Everyone,
I would like to use the Call Function - New task for one of my requirments. Please suggest if I am not doing right.
My programs looping structure is:
LOOP at zwewa_x.
        PERFORM bapi_matphysinv_changecount.
ENDLOOP.
FORM bapi_matphysinv_changecount .
call function 'BAPI_MATPHYSINV_CHANGECOUNT'
    exporting
      physinventory             = zwewa_y-iblnr
      fiscalyear                   = zwewa_y-gjahr
PERCENTAGE_VARIANCE       =
    tables
      items                     = itab
      return                     = it_return.
ENDFORM.      " BAPI_MATPHYSINV_CHANGECOUNT
Why am I thinking to use NEW TAEK is; when normally I call the BAPI its creates so many locks on the different different tables resulting LOCK table memory issue. So I thought to use the NEW TASK addition which would run a new session and while coming back to the calling program, would release all the locks. But I am not understanding how to use the NEW TASK perfectly and how to get the values (IT_RETURN) back from the new session to the calling program.
Can anybody send me the sample code where NEW TASK statement is being used and later from the new session values or Internal tables are coming back to the calling program.
This would be a great help.

Hi,
Try this:
CALL FUNCTION func STARTING NEW TASK task
              [DESTINATION {dest|{IN GROUP {group|DEFAULT}}}]
              parameter list
              [{PERFORMING subr}|{CALLING meth} ON END OF TASK].
Regards,
Neenu Jose.

Similar Messages

Parallel Processing Issue : call function starting new task

Hi
I am using the parallel processing functionality using the call function new task destination in group default Performing on end of task inside a loop ( i am splitting the internal table )
However when i am debugging the code, i am able to see the function module( it opens a new session in debugging ) , and i see that new task is started after the RFC Function module is executed .
How is this parallel processing ? I mean the new task starts after control returns back to main program , after the execution of the RFC FM.
I thought the idea was to have the same FM executing in multi threads. So that time is saved.

Thanks for the answers.
There were too many complications in the 'call function in new task ' option.
So we are trying it with the job submit option. So we are splitting up the data into smaller tables and submiting it with this statement : Submit 'prog' with selection-table 's_sel' via job 'job' and return .
Thanks

Call function starting new task:

I am trying to create a program in which few database update are mentioned.
after database updates , I am calling a function module using starting new task
in which I want to commit database updates inside in function module.
Problem is I want to commit only database updates if function module , not of main program. For that I tried using COMMIT WORK in function module and rollback statement after calling FM. But it is not working.COMMIT statement in FM also commiting database updates of main program also that is not required.
Can anybody help me in solving this problem.
Thanks
Ruchika

I think this may be caused by an implicit database commit performed by the system at the moment of calling a fm with "starting new task".
Try the following test:
- Put "rollback work" statement inside your fm which you call "starting new task" (instead of "commit") and check if the updates performed by the code executed before the call to this fm are stored in db - inspite of the rollback. If they are (as I suppose) this means that the commit effect you observe is not due to the "commit work" statement executed inside your fm but due to an implicit commit issued automatically at the time of calling the fm. If this is the case the solution could be placing the code which you now execute before "call function...starting new task" into a seperate fm called "in update task" - then the final commit or rollback statement in your main program should have the expected effect.
regards

Call function starting new task - Issue with memory variables

Hi All,
From our OIL application we have a call to the core delivery update FM WS_DELIVERY_UPDATE starting new task.Before the call we are exporting a variable to memory and deep inside the FM we have an oil routine which checks the value of this variable to decide on further flow. But since the FM is called in new task the variable is not available here.
We cannot use the SET GET parameter also as this value can be different for each session.
Can anyone suggest how to set and get the parameter value in this flow.
With regards,
Usha

Hi again,
To check whether the FM is running in new task or not - This is what I have tried (this may not be the best way), but it works fine.
1. The variable to check inside the called FM is SY-CPROG.
2. This variable will have value.
RS_TESTFRAME_CALL - If being checked from se37
Z / Y program - if called from the original z / y program (WITHOUT new task).
SAPMSSY1 - if being called using NEW TASK (and no debugging)
hope this helps.
Regards,
Amit Mittal.

Call function moduel in STARTIG NEW TASK

Hi All,
I am calling a custom function module using " <b>starting new task</b>
call function 'Y_CT_EVENT_TRIGGER'
    starting new task yscchdr-docno
    exporting
      event   = v_event
      objtype = c_yct
      ntime   = v_ntime
    tables
      xyctc   = i_yct_p.
I am calling this function module in a Loop statement
I like know how we can find the previous call has been completed or not?
ie Within the loop i am processing first record and calling this function module, then i am going to second record . before calling this function module for second record i want to know the first record call is completed or not?
Thanks for your help.
aRs

Do like this and try..
Add one more field to ur internal table with name STATUS(20).
LOOP AT ITAB
* call the FM here
IF SY-SUBRC EQ 0.
    ITAB-STATUS = 'Completed'.
ELSE.
    ITAB-STATUS = 'Not Completed'.
ENDIF.
MODIFY ITAB INDEX SY-TABIX TRANSPORTING STATUS.
ENDLOOP

Problem in Call function .. starting new task

Hi,
I want to execute a dialog program in background. I am trying to use call function starting new task.
I am facing some syntax issue. Can any one guide me how to use call function starting new task. The function module is RFC FM. Do we need to define task some where before use please guide.
Thanks in advance. A sample program will be gr8.

Hi,
Incase you want to call a RFC FM in background you can call ity like this.
     call function 'Y_L_TO_CREATE_HUPAST' in background task
             exporting
          venum   = y_v_venum
          backg   = 'X'
           buser   = y_lv_uname
          langu   = sy-langu
          objky   = y_lv_objky
          printer = y_lv_printer.
Here Y_L_TO_CREATE_HUPAST is a RFC FM.
Regards,
Ankur Parab

Call Function'BAPI_USER_CHANGE' starting new task 'TEST'

Hi All,
I have problem with starting new task statement, I am using one FM after that am using starting new task 'TEST'
statement but its not working in one system its working fine in other systems, Please help me who this works.
Thanks in Advance.
Eg: Call Function'BAPI_USER_CHANGE' starting new task 'TEST'
Regar

Thanks Lqueiroz ,
Now again i am getting a DUMP by saying ,
"An error occurred when executing a REMOTE FUNCTION CALL.
It was logged under the name "At least one entry could not be "
on the called page."
so what can be the reason for this
call function 'ZRFC_PER_DIEM' starting new task lc_taskid performing subr on end of task
        exporting
          h_guid      = it_header_guid_n
          request_obj = lt_requested_objects_n.
      wait up to '1' seconds.
      read table gt_scl into ls_scl index 1.
      p_transaction_per_diem = ls_scl-value.
      read table gt_scl into ls_scl index 2.
      transaction_currency_code = ls_scl-value.
form subr   using task_id type clike.
data: p_transaction_per_diem type char13,
        transaction_currency_code type char3.
receive results from function 'ZRFC_PER_DIEM'
                           tables
                            value = gt_scl.
So basically i am getting dumo when receive statenment is running , by giving above dump.
Regards
PG

CALL FUNCTION FUNCTION NAME STARTING NEW TASK 'TASK_NAME'.

Hello Experts,
I want to call a function in new task. I am not aware as to what advantages I would have. This approach is recomended because of a memory sharing issue. However the currently I would like to know what is the significance of the 'TASK_NAME' string that I am using. What does this signify? Can I use any string? should I end the task once the function is executed? If I should end it how?
I have tried with the syntax Call Function < Function Name> Starging New Task 'TASK_NAME'.
and this works.
Kindly advice..
Thanks, Anumodh

There is a nice article on SCN about this:
[RFC Calls|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/f078394a-4469-2910-c4bf-853c75674694]
And like the ABAP keyword documentation also states is this:
For task, you must specify a character-type data object, which contains a task identifier for the called remote function module, which can be up to eight characters long and chosen at will. This task ID should be unique for each call; it is passed to the callback routines to identify the function. Every task ID defines its own RFC connection with its own context, so that for repeated calls of function modules of the same task ID, the global data of the respective function group can be accessed, provided that the connection still stands.
Hope this will do.

CALL FUNCTION func STARTING NEW TASK task

hi,
i developed rfc to extract data and send to xi
as my interface is Async
as per soem documents it was mentioned the syntax
CALL FUNCTION func STARTING NEW TASK task
wat is the task ? in the syntax
and how do i use it
jeff

Hi suresh,
this is the code of RFC. if i execute without RFCDESTINATION it executes successfully. when i use RFC DESTINATION it shows error
call to messaging system failed: com.sap.aii.af.ra.ms.api.DeliveryException
i created RFC destination using TCP/IP and registered program. same parameters i am mentioning in XI.
FUNCTION z_bank_reconciliation.
""Local interface:
*" IMPORTING
*"     VALUE(COMP_CODE) TYPE BUKRS
*"     VALUE(HOUSE_BANK) TYPE HBKID
*"     VALUE(ACCOUNT_ID) TYPE HKTID
*" TABLES
*"      CHQDETAILS STRUCTURE ZPAYR
DATA: itab LIKE payr OCCURS 0 WITH HEADER LINE.
DATA: jtab LIKE payr OCCURS 0 WITH HEADER LINE.
DATA: it_bank LIKE zbankrecon OCCURS 0 WITH HEADER LINE.
DATA: it_bank1 LIKE zpayr OCCURS 0 WITH HEADER LINE.
TYPES : BEGIN OF ty_bseg ,
             bukrs LIKE bseg-bukrs,
             hbkid LIKE bseg-hbkid,
             belnr LIKE bseg-belnr,
             zlsch LIKE bseg-zlsch,
             kostl LIKE bseg-kostl,
             hkont LIKE bseg-hkont,
             bzdat LIKE bseg-bzdat,
         END OF ty_bseg.
TYPES : BEGIN OF ty_t012 ,
              bukrs LIKE t012-bukrs,
              bankl LIKE t012-bankl,
              bankn LIKE t012k-bankn,
         END OF ty_t012.
TABLES : payr, t012, t012k, bseg.
DATA : itpayr LIKE zpayr OCCURS 0 WITH HEADER LINE,
         itt012 TYPE STANDARD TABLE OF ty_t012,
         itbseg TYPE STANDARD TABLE OF ty_bseg,
         wa_itt012 TYPE ty_t012,
         wa_itbseg TYPE ty_bseg,
         total TYPE n.
SELECT * FROM zbankrecon INTO TABLE it_bank
                   FOR ALL ENTRIES IN itab
                   WHERE chequeno EQ itab-chect.
SELECT abukrs abankl b~bankn
              INTO CORRESPONDING FIELDS OF TABLE
              itt012 FROM t012 AS a
      INNER JOIN t012k AS b ON bbukrs = abukrs AND b~hbkid =
house_bank AND b~hktid = account_id
            WHERE abukrs = comp_code AND ahbkid = house_bank.
DELETE ADJACENT DUPLICATES FROM itt012.
SELECT zbukr hbkid hktid vblnr gjahr zaldt checf chect znme1 rwbtr
waers zaldt zbnkl FROM payr INTO CORRESPONDING FIELDS OF TABLE itpayr
    WHERE ( zbukr = comp_code AND hbkid = house_bank ) AND hktid =
    account_id.
SELECT bukrs hbkid belnr zlsch kostl hkont bzdat FROM bseg INTO TABLE
itbseg
WHERE bukrs = comp_code AND hbkid = house_bank.
SORT itt012 BY bankl.
SORT itbseg BY belnr.
READ TABLE itt012 INTO wa_itt012 INDEX 1.
LOOP AT itpayr.
    read table itbseg into wa_itbseg with key bukrs = itpayr-zbukr
hbkid = itpayr-hbkid.
    if sy-subrc = 0.
      itpayr-kostl = wa_itbseg-kostl.
      itpayr-hkont = wa_itbseg-hkont.
     itpayr-bldat = wa_itbseg-bzdat.
      itpayr-zlsch = wa_itbseg-zlsch.
    endif.
    itpayr-zbnkl = wa_itt012-bankl.
    itpayr-zbnkn = wa_itt012-bankn.
    MODIFY itpayr.
    APPEND itpayr TO chqdetails.
ENDLOOP.
LOOP AT chqdetails.
    READ TABLE it_bank WITH KEY chequeno = chqdetails-chect.
    IF sy-subrc NE 0.
      MOVE chqdetails TO it_bank1.
      APPEND it_bank1.
      CLEAR it_bank1.
    ENDIF.
ENDLOOP.
REFRESH chqdetails.
chqdetails[] = it_bank1[].
LOOP AT it_bank1.
    MOVE : it_bank1-chect TO zbankrecon-chequeno,
    sy-datum TO zbankrecon-check_date,
    sy-uzeit TO zbankrecon-check_time.
    INSERT zbankrecon.
    CLEAR zbankrecon.
ENDLOOP.
ENDFUNCTION.

CALL FUNCTION WITH STARTING NEW TASK

Hi All,
i'm call a function module through
CALL FUNCTION 'Y_WIN' DESTINATION 'rfc_destination' then it's give right result but when i want to call with starting new task then
CALL FUNCTION 'Y_WIN' STARTING NEW TASK 'INFO' DESTINATION 'rfc_destination'
it does nt provide me any data. i have check in debugger call fm is wkging fine so pls clear me why i'm nt geeting result.
pls give ur suggestions,
Anuj

Did you use the PERFORMING <form> ON END OF TASK to get the results back; like in the following sample
          CALL FUNCTION 'SAPWL_STATREC_READ_FILE'
               STARTING NEW TASK taskname
               DESTINATION list-name
               PERFORMING read_outtab ON END OF TASK
               EXPORTING
                    read_start_date   = s_date
                    read_start_time   = '000000'
                    read_end_date     = s_date
                    read_end_time     = '235959'
               EXCEPTIONS " failure when calling RFC
                    communication_failure = 1 MESSAGE msg_text
                    system_failure        = 2 MESSAGE msg_text
                    RESOURCE_FAILURE      = 3.
and
FORM read_outtab USING taskname.
* Receive results back
RECEIVE RESULTS FROM FUNCTION 'SAPWL_STATREC_READ_FILE'
    TABLES
      v2_normal_records = outtab
    EXCEPTIONS " from the called FM
      nodata    = 1.
Regards

Use of CALL FUNCTION - STARTING NEW TASK parameter_list.

SELECT strt_code
             city_code
             commu_code
             regiogroup
      INTO TABLE gt_adrstreet1
      FROM adrstreet
      FOR ALL ENTRIES IN gt_street_district
      WHERE strt_code EQ gt_street_district-strt_code.
To optimize the performance of teh above query I am planning to use call function CALL FUNCTION - STARTING NEW TASK .....
by spliting the above internal table gt_street_district into two internal tables and use the value of each internal table into two different queries and these queries will be put in call function - start new task ....so that these queries are run in different workprocess and thus improve the performance of the program.
Can you please let me know if this would be a good option and also how to implement the same.
Thanks.....

>To optimize the performance of teh above query I am planning to use call function CALL FUNCTION - STARTING NEW TASK .....
nonsense! You should not try parallel processing for a non-optimized SELECT statement.
Better add the first key field of the WHERE condition as said above and check
+ whether the driver table is empfty
+ and whether there are duplicated entries
... And it is also a good idea to really use the SINGLE RECORD BUFFER, therefore you must write
field-symbol: <fs> type ...
LOOP AT gt_street_district ASSIGNING <fs>
   SELECT *
                INTO TABLE gt_adrstreet1
                FROM adrstreet
                WHERE counrty =
                 AND       strt_code = <fs>-strt_code.
ENDLOOP.
Then it will be extremely fast!

Calling function in NEW TASK

Hi,
I am creating a program which calls a function, becuse the function gets list of 2000 employess and run for long time over the amount of employees i wrote "call function zxxxxx starting new task p_task_number...."
My question is - how many tasks can i create ? can i run the function in 10 tasks (20 employees in each task)????
thanks
Elad

Hi Diwakar,
try CALL FUNCTION func STARTING NEW TASK task1 DESTINATION dest IN GROUP DEFAULT, this will enable to run FM in groups (parallel processing) and might help in performance as will itself take care of available Application server.
Not true, you can call an FM(which needs to be RFC of course) just like below, and you would still achieve parallel processing, read IN GROUP for more details on when and where to use it.
DATA: l_task TYPE char10.
DO 5 TIMES.
l_task = sy-index.
CONDENSE l_task.
CONCATENATE 'TASK' l_task INTO l_task.
CALL FUNCTION 'ZTEST_CHEN' STARTING NEW TASK l_task.
ENDDO.
Regards,
Chen
Edited by: Chen K V on May 26, 2011 2:55 PM

Call function creatung new task

Hi friends,
I am running f110 in background...I have a Z function module which runs in update task....Insoide the z function module i have another rfc enabled function module where the updating of the docs is taking place....i am not able to get into the code of third fm through debugging...I have covered max scenarios of debugiing session external update system but none is fruitfull.
also,i have put infinite loop to see in sm50 ...there also i dont have rights...
could somebody tell me ow i get into the code through debugging
kanishak

Hi Kanishak,
if you call the function creating NEW TASK, you won't get to debugger easily: The function is enqueued in a TRFC queue which you could stop - but as you are not allowed SM50 you won't be allowed TRFC queue administration.
If you are allowed to use transaction SAAB, you can create and activate a checkpoint group. Use statement LOG-POINT to record contents of some program fields. Then you can see what is happening in background of background.
Regards,
Clemens

Call function ... starting new task endless

Hi to all,
this post is ideally the continious of my previous post
"how to attach custom code after invoice create/modification".
Here the problem.
In the BADI of the invoice document i call a custom function module (F1) with the addition "in update task". This to ensure that the code inside is executed only if the commit is triggrered.
In this function module, i call another custom function module (F2), with the addition "starting new task".
This function module (F2) contains a batch that waits 10 seconds (to ensure the "standard" modify) and then modify the invoice document with my custom data (by a call transaction).
The problem is that this new task is .... endless !!
I watch it writing a log file after the call transaction. Using AL11, i watched that every 10 second, the file is updated.
Seems that this new task never ends: it call the trasaction, it writes the log file and the start again.
The only way i have to stop that, is modify manually the same invoice document with VF02 trx.
At exit, i don't save data (otherwise the endless cycle begins again) and then i watch that the log file stops to be updated.
This task must be executed just one time. I've already try to put "exit" instruction at the end of the function module, but it doesen't work, the task start again and again.
How i can solve this problem?
Usefull solutions/hints/ideas etc will be sure rewarded (as usually).
Thx a lot
Andrea

>
Vinay parakala wrote:
> ...But it didnt work.
Moderator message - Give more information please in a new thread - post locked

ABAP Dump when calling Function Module Starting New Task

Hi all. I have a tricky situation now, I am doing a POC on parallel processing.
I am getting an ABAP dump on the following Call Function line which is in class lcl_steer_114numc (See below for full program):
METHOD start.
    CALL FUNCTION 'Z_ZZCLS_STEER_114NUMC'
      STARTING NEW TASK me->id
      CALLING me->finish ON END OF TASK.
ENDMETHOD.                    "start
However I get the following ABAP dump:
Short text
    Statement "CALL FUNCTION .. DESTINATION/STARTING NEW TASK/IN BACKGROUND TASK"
The function module only contains a wait statement to simulate parallel processing. It is strange that it dumps here, because when I change the FM call to another call that has been triggered successfully from other classes, it still produces the same ABAP dump.
The background of the Proof Of Concept is to see if I can get an event to trigger the next process that depends on the outcome of the previous process. Parallel processes are run in the start methods by calling RFC.
<Garbled code removed>
Moderator Message: Please post relevant portions of the code only.
Edited by: Suhas Saha on Jul 17, 2011 1:17 PM

Well, the thing is I did manage to run 3 other Function Modules asynchronously succeesfully prior to that function call, with the same exact function call syntax. Further more, I have tried editing it with your suggestion but I get the exact same dump.
The complete function group can be downloaded here (slinkee file):
https://docs.google.com/leaf?id=0B3sua1Bw4XK4ZmFhNzcwMTgtYzQ0Mi00NzQ4LTg5YTMtNDNlNWUxYTM2NTg3&hl=en_US
The complete program can be downloaded here (slinkee file):
https://docs.google.com/leaf?id=0B3sua1Bw4XK4YWJmNjU3ODYtODRmMy00Nzg2LThkNTUtZjNkNDRhZGQ3MTUw&hl=en_US
The complete ST22 dump can be found here:
https://docs.google.com/leaf?id=0B3sua1Bw4XK4ZDU1YmFkZDAtOTU5MS00ZTgwLWFlZTktNWZhMDUxMzJlZWNl&hl=en_US
Basically I ST22 gives me the following:
Runtime Errors         RPERF_ILLEGAL_STATEMENT
Date and Time          17.07.2011 05:29:54
|Short text                                                                                |
|    Statement "CALL FUNCTION .. DESTINATION/STARTING NEW TASK/IN BACKGROUND TASK"                 |
|What happened?                                                                                |
|    Error in the ABAP Application Program                                                         |
|                                                                                |
|    The current ABAP program "Z_ZZB1_CLOSE_PERIOD_TEST2" had to be terminated                     |
|     because it has                                                                               |
|    come across a statement that unfortunately cannot be executed.                                |
And it explains it here (but is not helpful / relevant at all) as I ran the program from SE38.
|Error analysis                                                                                |
|    There is probably an error in the program                                                     |
|    "Z_ZZB1_CLOSE_PERIOD_TEST2".                                                                  |
|    The program was probably called in a conversion exit                                          |
|    or in a field exit. These are implemented by                                                  |
|    function modules called CONVERSION_EXIT_xxxxx_INPUT/OUTPUT or                                 |
|    USER_EXIT_xxxxx_INPUT.                                                                        |
|    Conversion exits are triggered during screen field transports or                              |
|    WRITE statements, field exits during field transports from the                                |
|    screen to the ABAP/4 program.                                                                 |
|    In this connection, the following ABAP/4 statements are not allowed:                          |
|                                                                                |
I hope you try to download the slinkee files and you will notice the call function I performed was no different than the other call function RFC calls that really are working.

Call function - New task

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