topic Re: Lock object not working in Application Development and Automation Discussions

Lock object not working

Former Member — Mon, 12 Apr 2010 03:28:30 GMT

Hi Experts,

I tried to create a program that locks the database table BKPF by using lock object EFBKPF.

I only called the FM like this:

call function 'ENQUEUE_EFBKPF'

exporting

mandt = sy-mandt.

if sy-subrc eq 0.

....

endif.

I executed the program, breakpoint at sy-subrc ( = 0), and I can also see in SM12 that the table BKPF was successfully locked. However, when I try to create and post an FI document (FB01) (while it was still locked), I can still save and post the document, and an entry in BKPF was inserted.

I wonder if I'm doing something wrong here. ABAP Geniuses, please advise.

Regards,

Joyie

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 05:05:04 GMT

at what point you are using this lock object

one thing you have to note

before using lock object

check for enqueue_read FM to check that object which you are going to lock is locked

if it is locked then throw a error message saying that the object is been locked

do u want insert some entries in BKPF is it why you are using this?

cheers

S.Janagar

Edited by: Janagar Sundaramoorthy Nadar on Apr 12, 2010 7:05 AM

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 06:09:44 GMT

Hi Janagar,

Thank you for your reply.

I just check the SM12 before and after the call of Enqueue FM, and I see that it has successfully locked the table. No other program/transaction has locked the table.

The purpose for locking the table is because we want to read/select the records (not update/insert), and make sure that while doing that, nobody has inserted/updated any record into the table yet.

Thanks again in advance for your help.

Regards,

Joyie

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 06:14:08 GMT

Hi,

Give the Break-point in IF SY-SUBRC = 0.

then open another session and debug it.

u ll get the proper error message.

Regards,

Pravin

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 06:30:55 GMT

Hi Pravin,

As mentioned in my first post, I put at breakpoint at sy-subrc, and it is returning 0.

While the the enqueue statement is still successful, and SM12 also shows that the database table is locked, I run FB01 to post an FI document. I have successfully posted the FI document, and a record is inserted at BKPF.

I really dont know what the problem is.

Regards,

Joyie

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 06:35:09 GMT

If you are updating the records in BKPF, use Enqueue and Dequeue with primary key.

CALL FUNCTION 'ENQUEUE_EFBKPF'
                EXPORTING
                  MODE_BKPF       = 'E'
                  MANDT           = SY-MANDT
                 BUKRS           = <comp code>
                  BELNR           = <doc no>
                  GJAHR           = <fiscal year>

If you want to create new FI document, I think you don't need to lock the table BKPF, as it will be taken care automatically.

Regards

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 06:39:43 GMT

HI Joyie,

If your are using More docu from an ITAB then you need loop through them

call function 'ENQUEUE_EFBKPF' " in SE37 Enter this FM and Find Where used List there are many Examples
       exporting
            mode_bkpf      = 'E' " or 'X' here
            mandt          = sy-mandt
            bukrs          = bukrs
            belnr          = docno
            gjahr          = gjahr
       exceptions
            foreign_lock   = 1
            system_failure = 2
            others         = 3.
  case sy-subrc .
    when 1.
      message e130 with  'Data blocked by user'  sy-msgv1 .
    when 2.
      message e130 with 'Failed to read lock table' .
    when 3.
      message e130 with 'Error in locking table '.
  endcase.

" Or create your own Lock Object in SE11 for the DB table and the Key fields  and before you read the Table you can use this   
"   Lock Object and then do SELECT   Data base 


  call function 'DEQUEUE_EFBKPF'
       exporting
            mode_bkpf = 'E' " or 'X' Here
            mandt     = sy-mandt
            bukrs     = bukrs
            belnr     = belnr
            gjahr     = gjahr
*         X_BUKRS   = ' '
*         X_BELNR   = ' '
*         X_GJAHR   = ' '
*         _SCOPE    = '3'
*         _SYNCHRON = ' '
       exceptions
            others    = 1.

Cheerz

Ram

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 06:53:10 GMT

Thanks so much for your reply, Ram/Vinod.

I just realized that the above function works on FB02 (changing/updating the record).

But I also want to block user from inserting a new record (FB01).

That is, I can successfully insert new record, but I cant update/change an existing one. Is there a way for me to do that?

I mean, is there a way for me to block a user from inserting a new record as well?

Thank you so much for your help.

Regards,

Joyie

Edited by: joyie0823 on Apr 12, 2010 8:54 AM

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 07:03:30 GMT

HI Joyie,

" To Control the FB01 Tcode from creating/Inserting a Document you the below FM

  call function 'ENQUEUE_EFBVOR'
       exporting
*            bvorg        = bvorg " This is in BVOR Table and I am not sure how to use it
" Put a Debug in FB01 Tcode and find how this Value can be assigned.
" Go to Main Program of FB01 and find this FM and put a break Point
            mandt     = mandt
            belnr        = x_belnr
            bukrs       = bukrs
            gjahr       = gjahr

       exceptions
            foreign_lock = 1
            others       = 2.
  if sy-subrc = 1.
message 'Another User locked this Document' type 'E'
  elseif sy-subrc = 2.
    message .
  endif.

Cheerz

Ram

Re: Lock object not working

Former Member — Mon, 12 Apr 2010 08:03:53 GMT

Hi Ram,

THanks so much for your help. But I can still insert new records.

I am thinking of locking the transaction FB01 instead, is there a function module for that? I've checked that there is an FM called RSAU_WRITE_SM01_LOG, but our SAP is release 4.5B, and there is no such FM. I'm thinking of just doing a call transaction for SM01, but it looks messy to do that.

Regards,

Joyreen

Re: Lock object not working

Former Member — Tue, 13 Apr 2010 02:51:12 GMT

Hi All,

We've decided to use DB_SET_ISOLATION_LEVEL instead and maybe lock the transaction too.

I've found the answer at this post:

Thanks all for your help.

Edited by: joyie0823 on Apr 13, 2010 4:51 AM