How to judge performance prob

Dear All,
I have gone through ST03 , ST06 , ST02 , ST04 several times but never get any conclusion where is the prob .
what  I have to check
Total cpu , avg. cpu time, total rep. time , avg. resp. time , Total db , avg db time
which bacground task is taking too much time ?
is the sytem is busy with rfc call ?
any transection taking too much cpu time but not taking too much db time .
how to measure the time just like a doctor check through bench mark ( like blook pressure measure between 80 to 120 )
what to check in ST02 ?
I think i am looking for threshhold value ?
suppose cpu time is 3200 ms . is it high cpu time or normal ?
very much confused about the performance .
Pl. advice .
any good docs , link , wiki , TIPS ?

As long as no user complains and all jobs run ok, you are basically fine
But let me do an example, you have a user complaining that transaction X is running slow. Now you need to find out, what is taking the largest part of the response time. I often just monitor the workprocess in transaction SM50, constantly refreshing while the transaction is running. If you see the workprocess stuck on one single database table, you will have to look that up. If there are almost no database tables, this means most of the time is spent in abap code. You can also use transaction ST03 to figure out where the main part of the response time is spent.
Depending on this, you can do an SQL trace with ST05 (if the time spent is on the database), or a runtime analysis in SE30 to find which parts consume the most time. Or you use the debugger to capture a running transaction, often the place where you land is the part taking the most time.
Causes for high database times are often missing indexes, wrong database access (wrong cbo decision) or suboptimal coding.
Causes for high abap times are often nested loops, searching on unsorted lists etc.
Regards, Michael

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    DATA :  BEGIN    OF     chckfinal  OCCURS 0,           "CHEQUE FINAL INFO
            ebeln    LIKE   bseg-ebeln,                    "Purchasing Document Number
            ebelp    LIKE   bseg-ebelp,                    "Item Number of Purchasing Document
            matnr    LIKE   bseg-matnr,                    "Material Number
            lifnr    LIKE   bseg-lifnr,                    "Account Number of the Vendor
            werks    LIKE   bseg-werks,                    "Plant
            buzid    LIKE   bseg-buzid,                    "Identification of the Line Item
            bschl    LIKE   bseg-bschl,                    "Posting Key
            bukrs    LIKE   bkpf-bukrs,                    "Company Code
            belnr    LIKE   bkpf-belnr,                    "Accounting Document Number
            gjahr    LIKE   bkpf-gjahr,                    "Fiscal Year
            koart    LIKE   bseg-koart,                    "Account type
            augbl    LIKE   bseg-augbl,                    "Document Number of the Clearing Document
            vblnr    LIKE   payr-vblnr,                    "Document Number of the Payment Document
            zbukr    LIKE   payr-zbukr,                    "Paying company code
            chect    LIKE   payr-chect,                    "Check Number
            zaldt    LIKE   payr-zaldt,                    "Probable Payment Date (Cash Discount 1 Due)
            hbkid    LIKE   payr-hbkid,                    "Short key for a house bank
            END      OF     chckfinal.
    DATA :  BEGIN    OF     mat_desc OCCURS 0,
            matnr    LIKE   mara-matnr,
            maktx    LIKE   makt-maktx,
            END      OF     mat_desc.
    DATA :  BEGIN      OF     vend_det OCCURS 0,
            lifnr      LIKE   lfa1-lifnr,
            name1      LIKE   lfa1-name1,
            j_1icstno  LIKE   j_1imovend-j_1icstno,
            END        OF     vend_det.
    DATA :  BEGIN    OF     cst_rep  OCCURS 0,             "FINAL CST REPORT
            lifnr    LIKE   a363-lifnr,                    "Account Number of the Vendor
            name1    LIKE   lfa1-name1,                    "Vendor Name
            j_1icstno  LIKE   j_1imovend-j_1icstno,        " Vendor CST No.
            werks    LIKE   a363-werks,                    "Plant
           kschl    LIKE   a363-kschl,                    "Condition type
            ebeln    LIKE   ekko-ebeln,                    "Purchasing Document Number
            ebelp    LIKE   ekpo-ebelp,                    "Item Number of Purchasing Document
            bedat    LIKE   ekko-bedat,                    "Purchasing Document Date
            matnr    LIKE   ekpo-matnr,                    "Material Number
            maktx    LIKE   makt-maktx,                    "Material Description.
            kbetr    LIKE   konp-kbetr,                    "Rate (condition amount or percentage) where no scale exists
            mblnr    LIKE   mseg-mblnr,                    "Number of Material Document
            bldat    LIKE   mkpf-bldat,                    "Document Date in Document
            menge    LIKE   mseg-menge,                    "Quantity
            dmbtr    LIKE   mseg-dmbtr,                    "Amount in local currency
            cst_dmbtr LIKE  mseg-dmbtr,                    "CST Amount in local currency
            bwart    LIKE   mseg-bwart,                    "Movement Type (Inventory Management)
            whssn    LIKE   zeou_pcrdtl-whssn,             "Warehouse Records Entry Serial No.
            whsdt    LIKE   zeou_pcrdtl-whsdt,             "Warehouse Records Entry date
            buzid    LIKE   bseg-buzid,                    "Identification of the Line Item
            bschl    LIKE   bseg-bschl,                    "Posting Key
            wrbtr    LIKE   bseg-wrbtr,                    "Amount in document currency
            cst_wrbtr LIKE  bseg-wrbtr,                    "CST Amount in document currency
            belnr    LIKE   bseg-belnr,                    "Accounting Document Number
            gjahr    LIKE   bseg-gjahr,                    "Fiscal Year
            xblnr    LIKE   bkpf-xblnr,                    "Reference Document Number
            koart    LIKE   bseg-koart,                    "Account type
            augbl    LIKE   bseg-augbl,                    "Document Number of the Clearing Document
            vblnr    LIKE   payr-vblnr,                    "Document Number of the Payment Document
            zbukr    LIKE   payr-zbukr,                    "Paying company code
            chect    LIKE   payr-chect,                    "Check Number
            zaldt    LIKE   payr-zaldt,                    "Probable Payment Date (Cash Discount 1 Due)
            hbkid    LIKE   payr-hbkid,                    "Short key for a house bank
            END      OF     cst_rep.
    DATA :  BEGIN    OF     gt_output  OCCURS 0,              "ALV OUTPUT
            slno     LIKE   sy-tabix,                      "Serial Number
            lifnr    LIKE   a363-lifnr,                    "Account Number of the Vendor
            name1    LIKE   lfa1-name1,                    "Vendor Name
            j_1icstno  LIKE   j_1imovend-j_1icstno,        " Vendor CST No.
            werks    LIKE   a363-werks,                    "Plant
           kschl    LIKE   a363-kschl,                    "Condition type
            ebeln    LIKE   ekko-ebeln,                    "Purchasing Document Number
            ebelp    LIKE   ekpo-ebelp,                    "Item Number of Purchasing Document
            bedat    LIKE   ekko-bedat,                    "Purchasing Document Date
            matnr    LIKE   ekpo-matnr,                    "Material Number
            maktx    LIKE   makt-maktx,                    "Material Description
            mblnr    LIKE   mseg-mblnr,                    "Number of Material Document
            bldat    LIKE   mkpf-bldat,                    "Document Date in Document
            menge    LIKE   mseg-menge,                    "Quantity
            dmbtr    LIKE   mseg-dmbtr,                    "Amount in local currency
            cst_dmbtr LIKE  mseg-dmbtr,                    "CST Amount in local currency
            bwart    LIKE   mseg-bwart,                    "Movement Type (Inventory Management)
            whssn    LIKE   zeou_pcrdtl-whssn,             "Warehouse Records Entry Serial No.
            whsdt    LIKE   zeou_pcrdtl-whsdt,             "Warehouse Records Entry date
            buzid    LIKE   bseg-buzid,                    "Identification of the Line Item
            bschl    LIKE   bseg-bschl,                    "Posting Key
            wrbtr    LIKE   bseg-wrbtr,                    "Amount in document currency
            cst_wrbtr LIKE  bseg-wrbtr,                    "CST Amount in document currency
            belnr    LIKE   bseg-belnr,                    "Accounting Document Number
            gjahr    LIKE   bseg-gjahr,                    "Fiscal Year
            xblnr    LIKE   bkpf-xblnr,                    "Reference Document Number
            koart    LIKE   bseg-koart,                    "Account type
            augbl    LIKE   bseg-augbl,                    "Document Number of the Clearing Document
            vblnr    LIKE   payr-vblnr,                    "Document Number of the Payment Document
            zbukr    LIKE   payr-zbukr,                    "Paying company code
            chect    LIKE   payr-chect,                    "Check Number
            zaldt    LIKE   payr-zaldt,                    "Probable Payment Date (Cash Discount 1 Due)
            hbkid    LIKE   payr-hbkid,                    "Short key for a house bank
            usr_txt1(20) TYPE c,
            usr_txt2(20) TYPE c,
            END      OF     gt_output.
    *Working Variables
    DATA : cst_gr  LIKE  mseg-dmbtr,
           cst_inv LIKE  bseg-wrbtr,
           usr_txt1(20) TYPE c,
           usr_txt2(20) TYPE c.
    START-OF-SELECTION.
    *Retreiving Data from a363 table for the given input
      SELECT  matnr
              lifnr
              werks
              kschl
              knumh
              FROM a363
              INTO TABLE a363_itab
              WHERE matnr IN s_matnr AND lifnr IN s_lifnr AND werks EQ p_werks AND kschl IN s_kschl.
    *rakesh ***************************
    SELECT  *
             FROM konp
             INTO CORRESPONDING FIELDS OF TABLE konp_itab
             FOR ALL ENTRIES IN a363_itab
             WHERE knumh EQ a363_itab-knumh.
      IF  a363_itab[] IS NOT INITIAL.
        SELECT knumh
               kbetr
               lifnr
               FROM konp INTO TABLE konp_itab
               FOR ALL ENTRIES IN a363_itab
               WHERE knumh EQ a363_itab-knumh.
      ENDIF.
      LOOP AT a363_itab.
        READ TABLE konp_itab WITH KEY knumh = a363_itab-knumh.
        IF sy-subrc EQ 0.
          MOVE : konp_itab-kbetr TO a363_itab-kbetr.
          MODIFY a363_itab.
        ENDIF.
        CLEAR : a363_itab, konp_itab.
      ENDLOOP.
    rakesh****************************
    SELECT *
            FROM makt
            INTO CORRESPONDING FIELDS OF TABLE mat_desc
            FOR ALL ENTRIES IN a363_itab
            WHERE matnr EQ a363_itab-matnr.
      SELECT matnr
             maktx
             FROM makt INTO TABLE mat_desc
             FOR ALL ENTRIES IN a363_itab
             WHERE matnr EQ a363_itab-matnr.
      SELECT a~lifnr
             a~name1
             b~j_1icstno
             INTO TABLE vend_det
             FROM lfa1 AS a JOIN j_1imovend AS b
             ON alifnr EQ blifnr
             FOR ALL ENTRIES IN a363_itab
             WHERE a~lifnr EQ a363_itab-lifnr.
    Retreiving Data from EKKO & EKPO table for the given input
    And Populating the V_PO_DETAILS itab
    SELECT  *
             FROM ekko
             INTO CORRESPONDING FIELDS OF TABLE ekko_itab
             FOR ALL ENTRIES IN a363_itab
             WHERE lifnr EQ a363_itab-lifnr AND bedat IN s_bedat.
      IF  a363_itab[] IS NOT INITIAL.
        SELECT ebeln
               lifnr
               bedat
               FROM ekko INTO TABLE ekko_itab
               FOR ALL ENTRIES IN a363_itab
                WHERE lifnr EQ a363_itab-lifnr AND bedat IN s_bedat.
      ENDIF.
    SELECT  *
             FROM ekpo
             INTO CORRESPONDING FIELDS OF TABLE ekpo_itab
             FOR ALL ENTRIES IN a363_itab
             WHERE matnr EQ a363_itab-matnr AND werks EQ a363_itab-werks AND mwskz NE 'V0'.
      IF  a363_itab[] IS NOT INITIAL.
        SELECT ebeln
               ebelp
               matnr
               werks
               menge
               FROM ekpo INTO TABLE ekpo_itab
               FOR ALL ENTRIES IN a363_itab
               WHERE matnr EQ a363_itab-matnr AND werks EQ a363_itab-werks AND mwskz NE 'V0'.
      ENDIF.
      LOOP AT ekpo_itab.
        MOVE :   ekpo_itab-ebelp TO v_po_det-ebelp,
                 ekpo_itab-matnr TO v_po_det-matnr,
                 ekpo_itab-werks TO v_po_det-werks,
                 ekpo_itab-menge TO v_po_det-menge.
        READ TABLE ekko_itab WITH KEY ebeln = ekpo_itab-ebeln.
        IF sy-subrc EQ 0.
          MOVE  :  ekko_itab-lifnr TO v_po_det-lifnr,
                   ekko_itab-ebeln TO v_po_det-ebeln,
                   ekko_itab-bedat TO v_po_det-bedat.
          APPEND : v_po_det.
        ENDIF.
        CLEAR  : ekko_itab, ekpo_itab, v_po_det.
      ENDLOOP.
      LOOP AT v_po_det.
        READ TABLE a363_itab WITH KEY matnr = v_po_det-matnr lifnr = v_po_det-lifnr werks = v_po_det-werks.
        IF sy-subrc EQ 0.
          MOVE : a363_itab-kbetr TO v_po_det-kbetr.
          MODIFY v_po_det.
        ENDIF.
        CLEAR : a363_itab, v_po_det.
      ENDLOOP.
    Retreiving Data from MKPF & MSEG & ZEOU_PCRDTL table for the given input
    And Populating the GR_WH_info itab
    SELECT  *
             FROM mseg
             INTO CORRESPONDING FIELDS OF TABLE mseg_itab
             FOR ALL ENTRIES IN v_po_det
             WHERE ebeln EQ v_po_det-ebeln AND matnr EQ v_po_det-matnr AND bwart IN s_bwart.
      IF v_po_det[] IS NOT INITIAL.
        SELECT mblnr
               ebeln
               ebelp
               matnr
               lifnr
               werks
               menge
               dmbtr
               bwart
               FROM mseg INTO TABLE mseg_itab
               FOR ALL ENTRIES IN v_po_det
               WHERE ebeln EQ v_po_det-ebeln AND matnr EQ v_po_det-matnr AND bwart IN s_bwart.
      ENDIF.
      IF mseg_itab[] IS NOT INITIAL.
    SELECT  *
             FROM mkpf
             INTO CORRESPONDING FIELDS OF TABLE mkpf_itab
             FOR ALL ENTRIES IN mseg_itab
             WHERE mblnr EQ mseg_itab-mblnr.
        SELECT  mblnr
                bldat
                FROM mkpf INTO TABLE mkpf_itab
                FOR ALL ENTRIES IN mseg_itab
                WHERE mblnr EQ mseg_itab-mblnr.
      SELECT  *
             FROM zeou_pcrdtl
             INTO CORRESPONDING FIELDS OF TABLE zeou_pcrdtl_itab
             FOR ALL ENTRIES IN mseg_itab
             WHERE mblnr EQ mseg_itab-mblnr AND matnr EQ mseg_itab-matnr.
        SELECT matnr
               lifnr
               mblnr
               whssn
               whsdt
               FROM zeou_pcrdtl INTO TABLE zeou_pcrdtl_itab
                 FOR ALL ENTRIES IN mseg_itab
                 WHERE mblnr EQ mseg_itab-mblnr AND matnr EQ mseg_itab-matnr.
      ENDIF.
      LOOP AT mseg_itab.
        MOVE  :  mseg_itab-mblnr TO gr_wh_info-mblnr,
                 mseg_itab-ebeln TO gr_wh_info-ebeln,
                 mseg_itab-ebelp TO gr_wh_info-ebelp,
                 mseg_itab-matnr TO gr_wh_info-matnr,
                 mseg_itab-lifnr TO gr_wh_info-lifnr,
                 mseg_itab-werks TO gr_wh_info-werks,
                 mseg_itab-menge TO gr_wh_info-menge,
                 mseg_itab-dmbtr TO gr_wh_info-dmbtr,
                 mseg_itab-bwart TO gr_wh_info-bwart.
        READ TABLE mkpf_itab WITH KEY mblnr = mseg_itab-mblnr.
        IF sy-subrc EQ 0.
          MOVE  :  mkpf_itab-bldat TO gr_wh_info-bldat.
        ENDIF.
        READ TABLE zeou_pcrdtl_itab WITH KEY mblnr = mseg_itab-mblnr.
        IF sy-subrc EQ 0.
          MOVE  :  zeou_pcrdtl_itab-whssn TO gr_wh_info-whssn,
                   zeou_pcrdtl_itab-whsdt TO gr_wh_info-whsdt.
        ENDIF.
        APPEND : gr_wh_info.
        CLEAR : mseg_itab, mkpf_itab, gr_wh_info.
      ENDLOOP.
    Retreiving Data from BSEG & BKPF table
    And Populating the Vendor Invoice Details
      IF v_po_det[] IS NOT INITIAL.
    SELECT  *
             FROM bseg
             INTO CORRESPONDING FIELDS OF TABLE bseg_itab
             FOR ALL ENTRIES IN v_po_det
             WHERE ebeln EQ v_po_det-ebeln AND matnr EQ v_po_det-matnr AND buzid EQ 'W' AND bschl EQ '96'.
        SELECT  ebeln
                ebelp
                matnr
                lifnr
                werks
                buzid
                bschl
                wrbtr
                bukrs
                belnr
                gjahr
                FROM bseg INTO TABLE bseg_itab
                  FOR ALL ENTRIES IN v_po_det
                  WHERE ebeln EQ v_po_det-ebeln AND matnr EQ v_po_det-matnr AND buzid EQ 'W' AND bschl EQ '96'.
      ENDIF.
      IF bseg_itab[] IS NOT INITIAL.
    SELECT  *
             FROM bkpf
             INTO CORRESPONDING FIELDS OF TABLE bkpf_itab
             FOR ALL ENTRIES IN bseg_itab
             WHERE bukrs EQ bseg_itab-bukrs AND belnr EQ bseg_itab-belnr AND gjahr EQ bseg_itab-gjahr.
        SELECT  bukrs
                belnr
                gjahr
                xblnr
                bldat
                FROM bkpf INTO TABLE bkpf_itab
                FOR ALL ENTRIES IN bseg_itab
                WHERE bukrs EQ bseg_itab-bukrs AND belnr EQ bseg_itab-belnr AND gjahr EQ bseg_itab-gjahr.
      ENDIF.
      LOOP AT bseg_itab.
        MOVE  :  bseg_itab-ebeln TO vend_inv-ebeln,
                 bseg_itab-ebelp TO vend_inv-ebelp,
                 bseg_itab-matnr TO vend_inv-matnr,
                 bseg_itab-lifnr TO vend_inv-lifnr,
                 bseg_itab-werks TO vend_inv-werks,
                 bseg_itab-buzid TO vend_inv-buzid,
                 bseg_itab-bschl TO vend_inv-bschl,
                 bseg_itab-wrbtr TO vend_inv-wrbtr,
                 bseg_itab-bukrs TO vend_inv-bukrs,
                 bseg_itab-belnr TO vend_inv-belnr,
                 bseg_itab-gjahr TO vend_inv-gjahr.
        READ TABLE bkpf_itab WITH KEY bukrs = bseg_itab-bukrs belnr = bseg_itab-belnr gjahr = bseg_itab-gjahr.
        IF sy-subrc EQ 0.
          MOVE  :  bkpf_itab-xblnr TO vend_inv-xblnr,
                   bkpf_itab-bldat TO vend_inv-bldat.
          APPEND  :  vend_inv.
        ENDIF.
        CLEAR : vend_inv, bseg_itab, bkpf_itab.
      ENDLOOP.
    Retreiving Data from BSEG & BKPF table
    And Populating the Cheque Info Details
      IF v_po_det[] IS NOT INITIAL.
    SELECT  *
             FROM bseg
             INTO CORRESPONDING FIELDS OF TABLE chckinit
             FOR ALL ENTRIES IN v_po_det
             WHERE ebeln EQ v_po_det-ebeln AND matnr EQ v_po_det-matnr AND buzid EQ 'W' AND bschl EQ '86' AND koart EQ 'K'.
        SELECT  ebeln
                ebelp
                matnr
                lifnr
                werks
                buzid
                bschl
                bukrs
                belnr
                gjahr
                koart
                augbl
                FROM bseg INTO TABLE chckinit
                  FOR ALL ENTRIES IN v_po_det
                  WHERE ebeln EQ v_po_det-ebeln AND matnr EQ v_po_det-matnr AND buzid EQ 'W' AND bschl EQ '86' AND koart EQ 'K'.
      ENDIF.
      IF chckinit[] IS NOT INITIAL.
    SELECT  *
             FROM payr
             INTO CORRESPONDING FIELDS OF TABLE chckpayer
             FOR ALL ENTRIES IN chckinit
             WHERE vblnr EQ chckinit-augbl.
        SELECT  vblnr
                zbukr
                gjahr
                chect
                zaldt
                hbkid
                FROM payr INTO TABLE chckpayer
                FOR ALL ENTRIES IN chckinit
                WHERE vblnr EQ chckinit-augbl.
      ENDIF.
      SORT chckpayer BY vblnr DESCENDING.
      LOOP AT chckpayer.
        ON CHANGE OF chckpayer-vblnr.
          MOVE   : chckpayer TO chckpayer_u.
          APPEND : chckpayer_u.
          CLEAR  : chckpayer_u, chckpayer.
        ENDON.
      ENDLOOP.
      LOOP AT chckinit.
        MOVE  :  chckinit-ebeln TO chckfinal-ebeln,
                 chckinit-ebelp TO chckfinal-ebelp,
                 chckinit-matnr TO chckfinal-matnr,
                 chckinit-lifnr TO chckfinal-lifnr,
                 chckinit-werks TO chckfinal-werks,
                 chckinit-buzid TO chckfinal-buzid,
                 chckinit-bschl TO chckfinal-bschl,
                 chckinit-bukrs TO chckfinal-bukrs,
                 chckinit-gjahr TO chckfinal-gjahr,
                 chckinit-koart TO chckfinal-koart,
                 chckinit-augbl TO chckfinal-augbl.
        READ TABLE chckpayer_u WITH KEY vblnr = chckinit-augbl gjahr = chckinit-gjahr.
        IF sy-subrc EQ 0.
          MOVE  :  chckpayer_u-vblnr TO chckfinal-vblnr,
                   chckpayer_u-zbukr TO chckfinal-zbukr,
                   chckpayer_u-chect TO chckfinal-chect,
                   chckpayer_u-zaldt TO chckfinal-zaldt,
                   chckpayer_u-hbkid TO chckfinal-hbkid.
          APPEND : chckfinal.
        ENDIF.
        CLEAR : chckfinal, chckpayer_u, chckinit.
      ENDLOOP.
    Populating the final CST TABLE
      LOOP AT v_po_det.
        MOVE  :   v_po_det-lifnr TO cst_rep-lifnr,
                  v_po_det-werks TO cst_rep-werks,
                  v_po_det-ebeln TO cst_rep-ebeln,
                  v_po_det-ebelp TO cst_rep-ebelp,
                  v_po_det-bedat TO cst_rep-bedat,
                  v_po_det-matnr TO cst_rep-matnr,
                  v_po_det-kbetr TO cst_rep-kbetr.
        READ TABLE gr_wh_info WITH KEY ebeln = v_po_det-ebeln ebelp = v_po_det-ebelp."matnr = v_po_det-matnr.
        IF sy-subrc EQ 0.
          MOVE :  gr_wh_info-mblnr TO cst_rep-mblnr,
                  gr_wh_info-bldat TO cst_rep-bldat,
                  gr_wh_info-menge TO cst_rep-menge,
                  gr_wh_info-dmbtr TO cst_rep-dmbtr,
                  gr_wh_info-bwart TO cst_rep-bwart,
                  gr_wh_info-whssn TO cst_rep-whssn,
                  gr_wh_info-whsdt TO cst_rep-whsdt.
        ENDIF.
        READ TABLE vend_inv WITH KEY ebeln = v_po_det-ebeln ebelp = v_po_det-ebelp."matnr = v_po_det-matnr.
        IF sy-subrc EQ 0.
          MOVE : vend_inv-buzid TO cst_rep-buzid,
                 vend_inv-bschl TO cst_rep-bschl,
                 vend_inv-wrbtr TO cst_rep-wrbtr,
                 vend_inv-belnr TO cst_rep-belnr,
                 vend_inv-gjahr TO cst_rep-gjahr,
                 vend_inv-xblnr TO cst_rep-xblnr.
        ENDIF.
        READ TABLE chckfinal WITH KEY ebeln = v_po_det-ebeln ebelp = v_po_det-ebelp."matnr = v_po_det-matnr.
        IF sy-subrc EQ 0.
          MOVE : chckfinal-augbl TO cst_rep-augbl,
                 chckfinal-vblnr TO cst_rep-vblnr,
                 chckfinal-zbukr TO cst_rep-zbukr,
                 chckfinal-chect TO cst_rep-chect,
                 chckfinal-zaldt TO cst_rep-zaldt,
                 chckfinal-hbkid TO cst_rep-hbkid.
        ENDIF.
        READ TABLE mat_desc WITH KEY matnr = v_po_det-matnr.
        IF sy-subrc EQ 0.
          MOVE : mat_desc-maktx TO cst_rep-maktx.
        ENDIF.
        READ TABLE vend_det WITH KEY lifnr = v_po_det-lifnr.
        IF sy-subrc EQ 0.
          MOVE : vend_det-name1 TO cst_rep-name1,
                 vend_det-j_1icstno TO cst_rep-j_1icstno.
        ENDIF.
        APPEND : cst_rep.
        CLEAR  : cst_rep, v_po_det, gr_wh_info, vend_inv, chckfinal.
      ENDLOOP.
    Populating GT_output
      LOOP AT cst_rep.
        cst_gr = cst_rep-dmbtr * ( cst_rep-kbetr / 1000 ).
        cst_inv = cst_rep-wrbtr * ( cst_rep-kbetr / 1000 ).
        MOVE : cst_gr  TO cst_rep-cst_dmbtr,
               cst_inv TO cst_rep-cst_wrbtr.
        MODIFY : cst_rep.
        CLEAR : cst_rep, cst_gr, cst_inv.
      ENDLOOP.
      LOOP AT cst_rep.
        MOVE :  sy-tabix TO gt_output-slno,
                cst_rep-lifnr TO gt_output-lifnr,
                cst_rep-name1 TO gt_output-name1,
                cst_rep-j_1icstno TO gt_output-j_1icstno,
                cst_rep-werks TO gt_output-werks,
                cst_rep-matnr TO gt_output-matnr,
                cst_rep-maktx TO gt_output-maktx,
                cst_rep-ebeln TO gt_output-ebeln,
                cst_rep-ebelp TO gt_output-ebelp,
                cst_rep-bedat TO gt_output-bedat,
                cst_rep-mblnr TO gt_output-mblnr,
                cst_rep-bldat TO gt_output-bldat,
                cst_rep-menge TO gt_output-menge,
                cst_rep-dmbtr TO gt_output-dmbtr,
                cst_rep-cst_dmbtr TO gt_output-cst_dmbtr,
                cst_rep-bwart TO gt_output-bwart,
                cst_rep-whssn TO gt_output-whssn,
                cst_rep-whsdt TO gt_output-whsdt,
                cst_rep-buzid TO gt_output-buzid,
                cst_rep-bschl TO gt_output-bschl,
                cst_rep-wrbtr TO gt_output-wrbtr,
                cst_rep-cst_wrbtr TO gt_output-cst_wrbtr,
                cst_rep-belnr TO gt_output-belnr,
                cst_rep-gjahr TO gt_output-gjahr,
                cst_rep-xblnr TO gt_output-xblnr,
                cst_rep-augbl TO gt_output-augbl,
                cst_rep-vblnr TO gt_output-vblnr,
                cst_rep-zbukr TO gt_output-zbukr,
                cst_rep-chect TO gt_output-chect,
                cst_rep-zaldt TO gt_output-zaldt,
                cst_rep-hbkid TO gt_output-hbkid.
        APPEND gt_output.
        CLEAR : cst_rep, gt_output, sy-tabix.
      ENDLOOP.
    END-OF-SELECTION.
    *-ALV Routine
      PERFORM alv_forms.
    *&      Form  alv_forms
    FORM alv_forms.
      PERFORM alv_routines.
      gx_variant = sy-repid.
      CALL FUNCTION 'REUSE_ALV_VARIANT_DEFAULT_GET'
        EXPORTING
          i_save     = g_save
        CHANGING
          cs_variant = gx_variant
        EXCEPTIONS
          not_found  = 2.
      IF sy-subrc = 0.
        vari = gx_variant-variant.
      ENDIF.
      PERFORM comment_build  USING gt_list_top_of_page[].
      PERFORM fieldcat_init  USING gt_fieldcat[].
      PERFORM layout_build USING gs_layout.
      PERFORM print_build  USING gs_print.
      PERFORM alv_output.
    ENDFORM.                    " alv_forms
    *&      Form  alv_routines
    FORM alv_routines.
      PERFORM eventtab_build USING gt_events[].
      PERFORM e06_t_sort_build  USING gt_sort[].
      PERFORM sp_group_build USING gt_sp_group[].
      g_save = 'A'.
      PERFORM variant_init.
    ENDFORM.                    " alv_routines
    *&      Form  eventtab_build
    ----

    Hi Anu,
    These two statements taking to much time for execution what I can do for reducing execution time.
    Regards,
    Rakesh
    SELECT ebeln
    ebelp
    matnr
    lifnr
    werks
    buzid
    bschl
    wrbtr
    bukrs
    belnr
    gjahr
    FROM bseg INTO TABLE bseg_itab
    FOR ALL ENTRIES IN v_po_det
    WHERE ebeln EQ v_po_det-ebeln AND matnr EQ v_po_det-matnr AND buzid EQ 'W' AND bschl EQ '96'.
    ENDIF.
    SELECT ebeln
    ebelp
    matnr
    lifnr
    werks
    buzid
    bschl
    bukrs
    belnr
    gjahr
    koart
    augbl
    FROM bseg INTO TABLE chckinit
    FOR ALL ENTRIES IN v_po_det
    WHERE ebeln EQ v_po_det-ebeln AND matnr EQ v_po_det-matnr AND buzid EQ 'W' AND bschl EQ '86' AND koart EQ 'K'.
    ENDIF.

  • How to use perform and endperform in scripts

    Can anybody cleaerly explains me how to use perform and endperform in scripts with an example to add something extra dynamically to the standard script (like rvorder01).
    thanks in advance.
    regards
    anil.

    Check this example:
    In form
    PERFORM READ_TEXTS IN PROGRAM 'Z08M1_FORM_EKFORM1'
    USING &EKKO-EKORG&
    USING &EKPO-WERKS&
    USING &EKKO-EKGRP&
    USING &EKKO-BSTYP&
    CHANGING &COMPNAME&
    CHANGING &SENDADR&
    CHANGING &INVCADR&
    CHANGING &COMPADR&
    CHANGING &COVERLTR&
    CHANGING &SHIPADR&
    CHANGING &REMINDER&
    CHANGING &REJECTION&
    CHANGING &POSTADR&
    CHANGING &LOGO&
    ENDPERFORM
    In program
    FORM READ_TEXTS TABLES IN_PAR   STRUCTURE ITCSY
                           OUT_PAR  STRUCTURE ITCSY.
      DATA : L_EKORG TYPE EKORG,
             L_WERKS TYPE WERKS_D,
             L_BSTYP TYPE BSTYP,
             L_EKGRP TYPE BKGRP.
      READ TABLE IN_PAR WITH KEY 'EKKO-EKORG' .
      CHECK SY-SUBRC = 0.
      L_EKORG = IN_PAR-VALUE.
      READ TABLE IN_PAR WITH KEY 'EKPO-WERKS' .
      CHECK SY-SUBRC = 0.
      L_WERKS = IN_PAR-VALUE.
      READ TABLE IN_PAR WITH KEY 'EKKO-EKGRP' .
      CHECK SY-SUBRC = 0.
      L_EKGRP = IN_PAR-VALUE.
      READ TABLE IN_PAR WITH KEY 'EKKO-BSTYP' .
      CHECK SY-SUBRC = 0.
      L_BSTYP = IN_PAR-VALUE.
      CLEAR Z08M1_ORG_TEXTS.
      SELECT SINGLE * FROM Z08M1_ORG_TEXTS WHERE EKORG = L_EKORG
                                              AND WERKS = L_WERKS
                                              AND EKGRP = L_EKGRP
                                              AND BSTYP = L_BSTYP.
      IF SY-SUBRC NE 0.
        SELECT SINGLE * FROM Z08M1_ORG_TEXTS WHERE EKORG = L_EKORG
                                               AND WERKS = L_WERKS
                                               AND EKGRP = L_EKGRP
                                               AND BSTYP = SPACE.
      ENDIF.
      READ TABLE OUT_PAR WITH KEY 'COMPNAME'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_COMP.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'SENDADR'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_ADRS.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'INVCADR'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_INVC.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'COMPADR'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_CPAD.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'COVERLTR'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_COVR.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'SHIPADR'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_SHIP.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'REMINDER'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_RMDR.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'REJECTION'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_RJCT.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'POSTADR'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_POST.
      MODIFY OUT_PAR INDEX SY-TABIX.
      READ TABLE OUT_PAR WITH KEY 'LOGO'.
      OUT_PAR-VALUE = Z08M1_ORG_TEXTS-TXT_LOGO.
      MODIFY OUT_PAR INDEX SY-TABIX.
    ENDFORM.
    Check and let me know if u face any problem.
    Regards

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