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Former Member

Serial Number generation for the records in a Z-Table

Hi,

I have created a Z-Table to store Request Details. User provides the details of the request.

when ever user saves the Request i will generate the Request Number.

My Constraint is these Request Numbers must be in serial.

I don't want to hit the database every time to know what the Latest Request Number is? Because these requests would be in thousands. Please suggest me the better way.

Thanks,

Sekhar.J

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  • Best Answer
    author's profile photo Former Member
    Former Member
    Posted on Oct 22, 2008 at 04:30 AM

    u can do this by using Number Range...

    Maintain number range and intervals in transaction code SNUM

    Coding...

    call function 'NUMBER_RANGE_ENQUEUE'
             exporting
                   object              = 'ZOWNNO'   "Create with SNUM
             exceptions
                   foreign_lock        = 1
                   object_not_found    = 2
                   system_failure      = 3
                   others              = 4.
      if sy-subrc ne 0.
    *   message e086 with 'Lock error' sy-subrc.
      endif.
    
      call function 'NUMBER_GET_NEXT'
             exporting
                   nr_range_nr         = wnorange
                   object              = 'ZOWNNO'
                   subobject           = wsubobj
             importing
                   number                  = wdocno  "Number generated by SAP
             exceptions
                   interval_not_found      = 1
                   number_range_not_intern = 2
                   object_not_found        = 3
                   quantity_is_0           = 4
                   quantity_is_not_1       = 5
                   internal_overflow       = 6
                   others                  = 7.
      if sy-subrc ne 0.
    *   message e086 with 'Number Range' sy-subrc.
      endif.
    
      call function 'NUMBER_RANGE_DEQUEUE'
        exporting
          object                 = 'ZOWNNO'.
    
      if sy-subrc <> 0.
        MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
                 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      endif.
    

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  • author's profile photo Former Member
    Former Member
    Posted on Oct 22, 2008 at 04:23 AM

    Hi,

    There is no way to achieve this without accessing the database.

    Though you can use the TIMESTAMP (DATE + TIME) to get a unique no. Though this wont be a continous but would be a unique number. You can also use the no of seconds concept(no of seconds passed since 1/1/1900) as is used in UNIX.

    Regards,

    Nirmal

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    • Former Member

      yes..TIMESTAMP (date n time) is the only way u generate a serial without hitting DB..

      but what if two requests created at the exact same time???

      Edited by: soumya prakash mishra on Oct 22, 2008 6:29 AM

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