Lock Objects Problem while updating entries in custom table

Question

Hi Friends,
Iam updating a custom table ztable from internal table entries.
ie : Modify ZTABLE from table ITAB.
Now the entries are updating and inserting perfectly..
But my problem is i need to use lock objects before doing this..
I have created a lock obect EZTABLE with all th ekey fields of the table.. ie : it has 2 key fields
item & matnr .
Now how to use lock objects here.. do i need to loop the internal table and use enque & deque function module each and every time in loop or use it out side the loop..
Can any one explain me this..
Regards,
Kumar

Answer 1

hi kumar,
**check if the equipment is already locked by user, if yes, trigger a mail
            CALL FUNCTION 'ENQUEUE_EIEQUI'
             EXPORTING
            MODE_EQUI            = 'E'
            MANDT                = SY-MANDT
               equnr                = lv_equi_temp
            X_EQUNR              = ' '
            _SCOPE               = '2'
            _WAIT                = ' '
            _COLLECT             = ' '
             EXCEPTIONS
               foreign_lock         = 1
               system_failure       = 2
               OTHERS               = 3.
            IF sy-subrc <> 0.
              lv_subrc1 =  sy-subrc.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
            ELSE.
              CALL FUNCTION 'DEQUEUE_EIEQUI'
               EXPORTING
            MODE_EQUI       = 'E'
            MANDT           = SY-MANDT
                 equnr           =  lv_equi_temp
            X_EQUNR         = ' '
            _SCOPE          = '3'
            _SYNCHRON       = ' '
            _COLLECT        = ' '
            ENDIF.
try like this to check if the object is locked....
u can also use
call function 'ENQUEUE,.
do the needful changes update the database then commit work
then call function 'DEQUEUE'
hope this helps,
tanmaya