topic Re: Need to know whether the module pool program is already running in Application Development and Automation Discussions

Need to know whether the module pool program is already running

Former Member — Sun, 24 Nov 2013 05:43:03 GMT

Hi,

I got a scenario where module pool is not working correctly while simultaneously multiple users run that program. How can i know while code execution that the program is already opened. I dont think ABAP memory works is there any other efficient way for this please share your suggestions...

Re: Need to know whether the module pool program is already running

rosenberg_eitan — Sun, 24 Nov 2013 08:10:06 GMT

Hi,

Lock object ?

Regards.

Re: Need to know whether the module pool program is already running

venkateswaran_k — Sun, 24 Nov 2013 08:27:25 GMT

Dear Abhilash,

first of all want to know, what is going wrong when multiple users executes that program? Is it related to Database tables? Then you may have to look for different strategy.

However, if you want to stop, then look for current users logged in and filter by who uses the tcode. (you can get this information0). If so then stop it by a message.

Regards,

Venkat

Re: Need to know whether the module pool program is already running

former_member219762 — Mon, 25 Nov 2013 01:07:32 GMT

Hi,

Use shared memory object to store users, and check for that users in programme.

Regards,

Sreenivas.

Re: Need to know whether the module pool program is already running

Former Member — Mon, 25 Nov 2013 04:28:46 GMT

Hi,

You can check the SM12 to view the list of users working on the which transactions and programs.

Pragmatically you can use the lock objects.

Re: Need to know whether the module pool program is already running

nabheetscn — Mon, 25 Nov 2013 05:14:11 GMT

Simply use the concept of Lock objects.. The moment you enter a tcode to edit one record you call enqueue function module to lock that entry so that other person shall not edit it in parallel.

Re: Need to know whether the module pool program is already running

Former Member — Mon, 25 Nov 2013 05:27:31 GMT

Hi Abilash,

If your module pool program updates a DB table, and the update is not working properly - lock object is your solution.

Otherwise, when the program starts, put a flag variable in global memory (using EXPORT, or you can use a function group for this purpose). And before that, IMPORT that flag and check if it is set, if yes, don't proceed further saying 'This t-code is already being run by someone else!'.

Hope this make sense! Cheers.

Re: Need to know whether the module pool program is already running

sivaganesh_krishnan — Mon, 25 Nov 2013 05:46:19 GMT

Hi abilash,

If you want to know if the application is used by another user then you can use the concept of lock objects. This will allow only one user to work in the application one at a time and other user's will not be allowed to work in it . The lock is done by enqueue and after processing Dequeue takes place.

Once the dequeue is successful then next user can work with the application.

Refer : SAP Lock Concept (SAP Library - The SAP Lock Concept (BC-CST-EQ))

Regards,

Sivaganesh

Re: Need to know whether the module pool program is already running

former_member226225 — Mon, 25 Nov 2013 07:29:26 GMT

Hi Abhi,

DATA : lt_seqg3 TYPE STANDARD TABLE OF seqg3,

wa_seqg3 TYPE seqg3,

gv_name TYPE seqg3-gname.

gv_name = sy-repid.

CALL FUNCTION 'ENQUEUE_READ'

EXPORTING

gclient = sy-mandt

* gname = 'TRDIR'

* GARG = ' '

guname = '*'

* LOCAL = ' '

* FAST = ' '

* IMPORTING

* NUMBER =

* SUBRC =

TABLES

enq = lt_seqg3

EXCEPTIONS

communication_failure = 1

system_failure = 2

OTHERS = 3.

IF sy-subrc <> 0.

* Implement suitable error handling here

ENDIF.

IF lt_seqg3[] IS NOT INITIAL.

LOOP AT lt_seqg3 INTO wa_seqg3 WHERE garg CS gv_name.

IF wa_seqg3 IS NOT INITIAL.

EXIT.

ENDIF.

ENDLOOP.

ENDIF.

CHECK wa_seqg3 is NOT INITIAL.

WRITE : wa_seqg3-garg.

Thanks & Regards,

Raghunadh Kodali.

Re: Need to know whether the module pool program is already running

Former Member — Mon, 25 Nov 2013 09:01:18 GMT

Hi Guys,

Thanks for replies. I cant use Lock objects because the transaction is of moving the Stock from one storage bin to other storage bin. Each user will have individual pull list. But the 'n' no of pull list can have a common material,storage type and storage bin. If i keep lock objects that will effect all other users using material,storage type and storage bin.

Re: Need to know whether the module pool program is already running

former_member209120 — Mon, 25 Nov 2013 09:34:19 GMT

Hi abilash n

You can try like this

if tcode already in use it trigger error message...

DATA : v_opcode(1) TYPE x,
        wa_tcode TYPE usrinfo.

DATA: BEGIN OF usr_tcode OCCURS 10.
         INCLUDE STRUCTURE usrinfo.
DATA: END OF usr_tcode.

CONSTANTS: opcode_list LIKE v_opcode VALUE 2.

CALL 'ThUsrInfo' ID 'OPCODE' FIELD opcode_list

        ID 'TABUSR' FIELD usr_tcode-*sys* .

READ TABLE usr_tcode INTO wa_tcode with key tcode = 'SE38'.

if wa_tcode is not INITIAL.
message : 'Already in Use' type 'E'.
endif.

break-point.

Re: Need to know whether the module pool program is already running

nabheetscn — Mon, 25 Nov 2013 09:40:30 GMT

Then on what basis you want to prevent multiple user from executing the tcode.

Re: Need to know whether the module pool program is already running

Former Member — Mon, 25 Nov 2013 10:59:52 GMT

Nabheet its by Material,storage bin,storage type. Is there any other way than Lock objects......

Re: Need to know whether the module pool program is already running

nabheetscn — Mon, 25 Nov 2013 11:28:26 GMT

Please do as Ramesh suggested in previous post. SM04 shows us the detail who is doing what