sample code please

[Former Member]

Hi,

can any one give me sample code for the following

locking table while updating

and unlock after the updation

[Former Member]

Hi zakir,

*...locking the table Mbew.

CALL FUNCTION 'ENQUEUE_E_TABLE'

EXPORTING

TABNAME = 'MBEW'

VARKEY = V_KEY

EXCEPTIONS

FOREIGN_LOCK = 1

SYSTEM_FAILURE = 2

OTHERS = 3.

IF SY-SUBRC = 1.

CLEAR V_KEY.

MESSAGE S999(ZSD) WITH

'MBEW Table being processed by another User'.

ENDIF.

*....Modifying table Mbew

LOOP AT IT_TABLE.

UPDATE MBEW SET LAEPR = IT_TABLE-LAEPR

WHERE MATNR = IT_TABLE-MATNR

AND BWKEY = IT_TABLE-BWKEY.

ENDLOOP.

*... Unlocking the table Mbew.

CHECK V_KEY EQ SPACE.

CALL FUNCTION 'DEQUEUE_E_TABLE'

EXPORTING

TABNAME = 'MBEW'

VARKEY = V_KEY

EXCEPTIONS

SYSTEM_FAILURE = 2

OTHERS = 3.

IF SY-SUBRC = 1.

CLEAR V_KEY.

ENDIF.

Thanks

zakir

[Manohar2u]

Example code for

lock the table

CALL FUNCTION 'ENQUEUE_EVVBAKE'

EXPORTING

MODE_VBAK = 'E'

MANDT = SY-MANDT

VBELN = VBAK-VBELN

X_VBELN = ' '

_SCOPE = '2'

_WAIT = ' '

_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.

Update/insert into your dbase

Then unlock the table

CALL FUNCTION 'DEQUEUE_EVVBAKE'

EXPORTING

MODE_VBAK = 'E'

MANDT = SY-MANDT

VBELN = VBAK-VBELN

X_VBELN = ' '

_SCOPE = '2'

_WAIT = ' '

_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.

Regds

Manohar

[Manohar2u]

If you are looking for locking Z table, then you should create lock objects from SE11.

Then use FM's ENQUEUE_<TABNAME> and DEQUEUE_<TABNAME> for locking and unlocking.

Refer to this link for further details

http://help.sap.com/saphelp_47x200/helpdata/en/af/22ab01dd0b11d1952000a0c929b3c3/frameset.htm

Regds

Manohar

[Laxmana_Appana_]

Hi Zakir,

Go to SE11 and create lock object on the table with specified fields , system will generate 'ENQUEUE... ' and 'DEQUEUE.....' FM's , call those FM's like below :

(with these FM's you can specify row level locking also, which normal system Enqueue/Dequeue FM's will not give)

call function 'ENQUEUE....'

• insert or modify table statements

call function 'DEQUEUE....'

Regards

Appana