topic Re: Regarding lock object in Application Development and Automation Discussions

Regarding lock object

former_member632991 — Wed, 29 Nov 2006 10:59:14 GMT

Hi,

i have a transaction which i want to lock for another user to modify if someone else is editing that. How can i use lock objects in that.

Pls explain with example

Regards,

Sonika

Re: Regarding lock object

Former Member — Wed, 29 Nov 2006 11:02:38 GMT

Please check

https://forums.sdn.sap.com/click.jspa?searchID=220533&messageID=2475414

Re: Regarding lock object

Former Member — Wed, 29 Nov 2006 11:03:41 GMT

Hi Sonika,

You can use any one the below lockobject to lock another transaction. (Use lock mode as 'E' exclusive)

<b>ESSCAL

ESSOSTC

ESTERM</b>

The sample code will be

* Locking the transaction code -MM01
 CALL FUNCTION 'ENQUEUE_ESTERM'
  EXPORTING
    MODE_TSTC            = 'E'
    TCODE                = 'MM01'
  EXCEPTIONS
    FOREIGN_LOCK         = 1
    SYSTEM_FAILURE       = 2
    OTHERS               = 3.
 IF sy-subrc <> 0.
Message 'Error in lockig' type 'E'.
 ENDIF.
 
* Write the code with respective to MM01. 
 
* Unlocking the transaction code -MM01 
 CALL FUNCTION 'DEQUEUE_ESTERM'
  EXPORTING
    MODE_TSTC       = 'E'
    TCODE           = 'MM01'
    X_TCODE         = ' '
    _SCOPE          = '3'
    _SYNCHRON       = ' '
    _COLLECT        = ' '.

If helps plz reward points.

Regards

Bhupal Reddy

Re: Regarding lock object

Former Member — Wed, 29 Nov 2006 11:06:02 GMT

Hi Sonika,

look for "enqueue" & "dequeue" FM through the forum .

Hope this helps,

Erwan

Re: Regarding lock object

former_member632991 — Wed, 29 Nov 2006 11:14:37 GMT

actully, i am using in a Z-program. I am using enquee_(lock_object) function module to lock object. And i have seen in sm12 that object is locked. but i can still make changes. Please help

will error msg print automatically or we have to create it.

Message was edited by:

Sonika Ahuja

Re: Regarding lock object

Sandeep_Panghal — Wed, 29 Nov 2006 11:21:46 GMT

Hi,

U have handle the Exceptions explicitely.

Hope this helps.

Re: Regarding lock object

Former Member — Wed, 29 Nov 2006 11:22:36 GMT

Hi Sonika,

You might checking worngly. i.e. check with other useid it will works fine. for your user it won't work.

Regards

Bhupal Reddy

Re: Regarding lock object

former_member632991 — Wed, 29 Nov 2006 11:27:57 GMT

i am using the same userid but different sessions.

and i want to restrict same user to modify it in another session

Re: Regarding lock object

Sandeep_Panghal — Wed, 29 Nov 2006 11:34:00 GMT

Hi,

U want to lock the same user is it?

So in that case if the user has autorization to change that object the lock will not work..

Re: Regarding lock object

Former Member — Wed, 29 Nov 2006 11:34:22 GMT

Hi Sonika,

Use optimistic locking mechanism. It will helps to you.

The following will works fine.

Locking the transaction code -MM01 (optimistic)

CALL FUNCTION 'ENQUEUE_ESTERM'

EXPORTING

MODE_TSTC = 'O'

TCODE = 'MM01'

EXCEPTIONS

FOREIGN_LOCK = 1

SYSTEM_FAILURE = 2

OTHERS = 3.

IF sy-subrc <> 0.

Message 'Error in lockig' type 'E'.

ENDIF.

Locking the transaction code -MM01 (After this FM - 'O' will be converted to 'E')

CALL FUNCTION 'ENQUEUE_ESTERM'

EXPORTING

MODE_TSTC = 'R'

TCODE = 'MM01'

EXCEPTIONS

FOREIGN_LOCK = 1

SYSTEM_FAILURE = 2

OTHERS = 3.

IF sy-subrc <> 0.

Message 'Error in lockig' type 'E'.

ENDIF.

Write the code with respective to MM01.

Unlocking the transaction code -MM01

CALL FUNCTION 'DEQUEUE_ESTERM'

EXPORTING

MODE_TSTC = 'E'

TCODE = 'MM01'

X_TCODE = ' '

_SCOPE = '3'

_SYNCHRON = ' '

_COLLECT = ' '.

The above code used for locking the transaction code in program. If you want to do through screen, go to SM01 -> lock the transaction.

If help plz reward points.

Regards

Bhupal Reddy

Re: Regarding lock object

Former Member — Wed, 29 Nov 2006 15:27:05 GMT

Hi Sonika,

Check this link

http://help.sap.com/saphelp_nw04s/helpdata/en/7b/f9813712f7434be10000009b38f8cf/frameset.htm

Regards,

Kinshuk

Re: Regarding lock object

Former Member — Thu, 30 Nov 2006 08:07:14 GMT

Hi,

Check for authorization object along with lock objects

Regards

Yamini

Re: Regarding lock object

Former Member — Thu, 30 Nov 2006 10:55:25 GMT

Hello,

Look for DEQUEUE_* and ENQUEUE_* FM's in se37 and search in the SDN for seeing how to use them

Regards,

Shehryar Dahar