topic Re: FM for locking in Application Development and Automation Discussions

FM for locking

Former Member — Mon, 04 Jun 2007 13:20:56 GMT

hi..

i have an equipment number eqnr .. i want to check that if any lock exists on tat eqnr..

can any one suggest me any FM tat will help me uot wid this..?

thnx.

Re: FM for locking

RichHeilman — Mon, 04 Jun 2007 13:24:32 GMT

Please use ENQUEUE_EIEQUI

Regards,

RIch Heilman

Re: FM for locking

Former Member — Mon, 04 Jun 2007 13:26:47 GMT

Hi Neha,

Just go to SE37, type DEQUEUE* and hit F4. Provide additional parameters which would help you zero in on the appropriate FM. Use this FM to unlock your object. To lock your record, use ENQUEUE*..and find the appropriate FM.

Regards

Anil Madhavan

Re: FM for locking

Former Member — Mon, 04 Jun 2007 13:51:45 GMT

hi..

ENQUEUE_EIEQUI

can u please explain if i want to check the lock for an equipment and if i find tat there exists a lock..then i have to wait for 2 sec and then chk it again ..if the lock still exists..

in this case the WAIT parameter if i pass WAIT = '5'.

will work..

thnx

Re: FM for locking

RichHeilman — Mon, 04 Jun 2007 13:59:56 GMT

Simply call it like this. The WAIT parameter needs a value of "X". It will wait a predetermined amount of time for the lock to be released, You could do this in a loop if necessary, keep checking sy-subrc untill it = 0.




report zrich_0001.

parameters: p_equnr type equi-equnr.

start-of-selection.


  call function 'ENQUEUE_EIEQUI'
    exporting
      mode_equi            = 'E'
      mandt                = sy-mandt
      equnr                = p_equnr
*   X_EQUNR              = ' '
*   _SCOPE               = '2'
      _wait                = 'X'
*   _COLLECT             = ' '
    exceptions
      foreign_lock         = 1
      system_failure       = 2
      others               = 3.
  if sy-subrc <> 0.
    message id sy-msgid type sy-msgty number sy-msgno
            with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  endif.

Regards,

RIch Heilman

Re: FM for locking

Former Member — Mon, 04 Jun 2007 14:10:26 GMT

hi..

wait = 'X' will for for how long can we define it ....?

and loop in the sence

can u give example for loop.. i m new to abap so i m not aware of this...

thnx..

Re: FM for locking

Former Member — Mon, 04 Jun 2007 14:20:50 GMT

its urgent

Re: FM for locking

RichHeilman — Mon, 04 Jun 2007 14:33:22 GMT

The wait parameter will wait as per a system wide setting setup by your basis people, I would imagine that it is not too long. One question, how long do you plan to wait untill you give up?

Regards,

RIch Heilman

Re: FM for locking

RichHeilman — Mon, 04 Jun 2007 14:41:29 GMT

So in this example, I am doing a loop and check for a lock, if I don't get one, I wait for 5 seconds, this loop continues untill 30 seconds, no lock then it quits and gives message.




report zrich_0001.

data: counter type i.

parameters: p_equnr type equi-equnr.

start-of-selection.


  clear counter.

  do.

* Exhausted,  no luch in getting a lock, get of of DO loop.
    if counter > 6.
      sy-subrc = 1.
      exit.
    endif.

* Try for lock
    call function 'ENQUEUE_EIEQUI'
      exporting
        mode_equi            = 'E'
        mandt                = sy-mandt
        equnr                = p_equnr
*    _wait                = 'X'
      exceptions
        foreign_lock         = 1
        system_failure       = 2
        others               = 3.
* Got a lock, get out of DO loop. 
   if sy-subrc  = 0.
      exit.
    endif.

* Still here?  Then wait another 5 seconds
    wait up to 5 seconds.
    counter = counter  + 1.

  enddo.

* Report status
  case sy-subrc.
    when  0.
      message s001(00) with 'Lock could not be established'.
    when  1.
      message i001(00) with 'Lock could not be established'.
  endcase.

Regards,

Rich Heilman