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.

Similar Messages

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

Starting new task task .. performing subroutine .... error

HI.
i used a Perform to call a Function module.
   Perform <form name which contains the Function module>.
I am calling the FM as -
Form
data: done type c value 'X',
          functioncall1(1).
   call function <FM name>
                  starting new task <Taskname>
                  destination in group default
                  performing <subroutine> on end of task
                    Exporting
wait until functioncall1 = done.
Endform
Later -
Form <subroutine> using taskname.
receive results from Function "FM name'
                                   importing
functioncall1 = done.
endform.
i do not get the importing data.. the passing Importing parameter are not recognized in the subroutine form..
can any one check and inform me the problem.
thanks in advance.
Regards,
AJ.

Hi,
You need to define the internal table globally.
Regards,
Nandha

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

Facing problem in call function starting new task taskname

Hi all,
when i call a function module using starting new task, it is failing with sy-subrc 3. can anyone guide me in this.
see the code :
DATA   lv_taskname(7) TYPE c VALUE 'PEM_EXE'.
    CALL FUNCTION 'PEM_SCHEDULE' STARTING NEW TASK lv_taskname
         EXPORTING
              iv_packid             = gv_packid
              iv_pebid              = ls_alv_out-peb_id
         EXCEPTIONS
              invalid_state_request = 1
              database_error        = 2
              OTHERS                = 3.
Thanks in advance.
Best Regards,
Prashant

when i change the function module from normal to remote, it gives me a error that the "generic types are not allowed in RFC", but i have not given any generic type in the parameters.
see the signature of the function module.
*" IMPORTING
*"     VALUE(IV_PACKID) TYPE CNVMBTPACK-PACKID
*"     VALUE(IV_PEBID) TYPE CNVMBTPEB-PEB_ID
*" EXPORTING
*"     VALUE(EV_ERROR_DETECTED) TYPE C
*"     VALUE(EV_STOP) TYPE C
*" EXCEPTIONS
*"      INVALID_STATE_REQUEST
*"      DATABASE_ERROR
*"      FORIEGN_LOCK
Can u please check it and find out the problem
Thanks,
Prasanth

Starting new task in FM

Hi,
I have FM 'update_table' with asynchrounous call(FM which use starting new task). This FM updates the table and commits the work.But when I try to read the datas from table I don't get the updated datas.This happens only in in real scenario.
When I try to debug the program it works fine and I get the updated data.
Let me know how to resolve the issue?
thanks
Suganya

Hi,
As you want to update table in the function module, are you calling this fm in UPDATE TASK?
Here are more details about the command.
CALL FUNCTION func IN UPDATE TASK.
Extras:
... EXPORTING p1 = f1     ... pn = fn
... TABLES     p1 = itab1 ... pn = itabn
Effect
Flags the function module func for execution in the update task. It is not executed at once, but the data passed with EXPORTING or TABLES is placed in a database table and a subsequent COMMIT WORK then causes the function module to be executed by the update task. Update function modules must be flagged as such in the Function Builder
The return value is not set.
Addition 1
... EXPORTING p1 = f1 ... pn = fn
Effect
Values of fields and field strings specified under EXPORTING are passed from the calling program to the function module. In the function module, the formal parameters are defined as import parameters. In the interface definition, default values must be assigned to all import parameters of the update function module.
Addition 2
... TABLES p1 = itab1 ... pn = itabn
Effect
TABLES passes references to internal tables. All table parameters of the function module must have values.
Note
With update function modules, both import parameters and exceptions are ignored when the call is made.
   1. During updating processes of function modules, you may not make any calls using the language statements SUBMIT, CALL DIALOG, CALL SCREEN, CALL TRANSACTION, COMMIT WORK or ROLLBACK WORK . All other language elements that trigger a database Commit (for example, a screen change using the MESSAGE statement) also lead to a runtime error during updating.
ashish

Starting new task inside an Update Task

Hi guys,
I need an expert opinion for a problem I'm facing at the moment.
The requirement is this: I need to trigger a function module during the update task of a material document.
This function module however should not slow down the posting of the document, so it must not be in the same LUW, but in a separate task.
My question is: does it work to call a function module with STARTING NEW TASK inside an UPDATE TASK (for example a user exit) and if it does work, what's your opinion on it? Is if safe? Does it come with problems? According to the SAP documentation, STARTING NEW TASK does not trigger a COMMIT when it's called inside an update task.
The alternative would be to trigger a work flow, but that's much more work.
Any input is welcome.
Thanks.

Hello Janis,
Just to reiterate this aRFC call triggers an implicit database commit. So the OP is partially correct
Klaus Kronawetter we have 2 things which we need to consider -
Asynchronous RFC triggers a database commit in the calling program.
Any database commits or database rollbacks that occur within the update task cancel the update.
Simply put, as per SAP documentation, you cannot use aRFC within an update task.
BR,
Suhas

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 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

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 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.

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!

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 STARTING NEW TASK ----- Resource not available

Hi All,
I am calling a Function Module in new task using STARTING NEW TASK.
If the resources are not available for the Dialog Process to start, for how long will SAP keep on trying to acquire the resources and in case if it fails to acquire resource, then what will happen
Regards,
Abhishek

Hi,
From memory (as it is a long time since I've done this) you can call another function module or SAP command that will tell you how many work processes are currently available before you actually then start the new task. This can help you to avoid this issue and also stop you from eating up all available work processes on a system which will annoy all other users!
I think this is the FM
CALL FUNCTION 'SPBT_INITIALIZE'
EXPORTING
    group_name     = 'parallel_generators'
IMPORTING
    free_pbt_wps   = w_free_processes
EXCEPTIONS
    OTHERS         = 1.
Gareth.

CALL FUNCTION STARTING NEW TASK Debug

Hi,
How can you debug a function module which is called with an add on 'STARTING NEW TASK' ?
Thank you.

Hi,
the only way i know is :
1. Create an endless loop in the FM like:
clear x.
do.
if x = 1. exit. endif.
enddo.
Now run the program. If you call the sm50 trx you'll see a new task : your function module. Now get the session in debug (Menu Program/Sessio -> Program -> Debugging) and change the x value to exit form the loop. Continue with the debug.
Regards
Andrea

CALL FUNCTION FUNCTION NAME STARTING NEW TASK 'TASK_NAME'.

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