Custom Equalizer, or how to improve the bass.

I have been looking for a solution how to improve the bass on Ipod. So far no results. I purchased in ear head phones from $40- $250. It doesn't sound like my CD player that has extra bass. And if I jog and earphone don't sit deep inside of my ears, forget it. The other MP3 players have the bass boosters. But I like the Ipod. Is there a solution that I am not aware about?
Thanks,

Thanks for the help guys, but...
The presets in I pod are a joke. I will explain. Did you guys have a home stereo before? I am sure you did. The very cheap unit would come with presets, like jazz, dance, classical and so fort. And it would sound like either not enough treble, or bass. The medium price to expensive units would come with custom equalizer settings to your liking. I pod is not that cheap, $499 I photo 60G. Apple should have made custom settings, like I tunes!!!
Why the custom settings of the songs in I tunes are not transferred to Ipod?
Cheers.

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    REPORT z03_gil010 NO STANDARD PAGE HEADING LINE-SIZE 130.
                                 INCLUDE                                 *
    INCLUDE: z00_bci010.                   " Gestion des anomalies.
                          Déclaration des données                        *
                       Tables de la bases de données                     *
    TABLES:
            ekpo,        " Poste document d'achat.
            lfa1,        " Base fournisseurs (généralités).
            marc,        " Données division de l'article.
            z03_bw_cmp1,
            eord,        "Répertoire des sources appro. Achats
            eina,        "Fiche infos-achats - données générales
            t024,        "Groupes d'acheteurs
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    DATA: END OF itb_months.
    Table pour récupération d'infos sur les divisions
    DATA: BEGIN OF itb_t001w OCCURS 0,
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          END OF itb_t001w.
    Déclaration de la table interne contenant les infos sur l'adresse du
    fournisseur.
    DATA: BEGIN OF itb_adresse OCCURS 0,
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            name1 LIKE lfa1-name1,                              " Nom 1.
            name2 LIKE lfa1-name2,                              " Nom 2.
            name3 LIKE lfa1-name3,                              " Nom 3.
            name4 LIKE lfa1-name4,                              " Nom 4.
            stras LIKE lfa1-stras,           " N° de rue et nom de la rue.
            pstlz LIKE lfa1-pstlz,           " Code postal.
            ort01 LIKE lfa1-ort01,           " Localité.
            pfach LIKE lfa1-pfach,           " Boîte postale.
            pstl2 LIKE lfa1-pstl2,           " Code de la boîte postale.
            land1 LIKE lfa1-land1,           " Clé de pays.
            landx LIKE t005t-landx,          " Pays.
            spras LIKE lfa1-spras,           " Code langue
    END OF itb_adresse.
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    prévisions de commande.
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            werks LIKE marc-werks,            " Division
            idnlf LIKE eina-idnlf,            " ADDsde ref article frn
            lifnr LIKE eord-lifnr,            " N° fournisseur.
            ekgrp LIKE marc-ekgrp,            " Groupe d'acheteurs
            dispo LIKE marc-dispo,            " Code gestionnaire MRP
            matnr LIKE eord-matnr,            " Article.
            maktx LIKE makt-maktx,            " Désignation article.
            bstmi LIKE marc-bstmi,            " Quantité de commande.
            men00 LIKE plaf-gsmng,            " Quantité du mois en cours M.
            men01 LIKE plaf-gsmng,            " Quantité pour le mois M+1.
            men02 LIKE plaf-gsmng,            " Quantité pour le mois M+2.
            men03 LIKE plaf-gsmng,            " Quantité pour le mois M+3.
            men04 LIKE plaf-gsmng,            " Quantité pour le mois M+4.
            men05 LIKE plaf-gsmng,            " Quantité pour le mois M+5.
            men06 LIKE plaf-gsmng.            " Quantité pour le mois M+6.
    DATA: END OF itb_prev_cde.
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    Structure de travail pour les prévisons PFC
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    portefeuille des commandes d'achat.
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            col00bis(20),             "Reference article
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          w_mois5 LIKE t247-ltx,
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    FAE 26446 : ajout
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                              INITIALIZATION                             *
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      MOVE sy-datum TO w_datejour.                              "FAE15269
    Gestion des anomalies.
      MOVE text-lb1 TO w_lb_traitement.
      PERFORM f930_init USING sy-cprog '30'.
    Fin de la gestions des anomalies.
    Récuperation des mois dans la table interne 'ITB_MONTHS'.
      CALL FUNCTION 'MONTH_NAMES_GET'
           EXPORTING
                language              = sy-langu
           TABLES
                month_names           = itb_months
           EXCEPTIONS
                month_names_not_found = 1
                OTHERS                = 2.
      IF sy-subrc <> 0.
        MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
                WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
      ENDIF.
    Récupération des differentes periodes.
      PERFORM f100_recuperation_date TABLES itb_months.
    Récupération du debut du mois.
      CONCATENATE sy-datlo(6) '01' INTO w_debut_mois.
      MOVE: w_debut_mois TO w_debut_periode.
    Récupération du dernier jour du mois.
      CALL FUNCTION 'LAST_DAY_OF_MONTHS'
           EXPORTING
                day_in            = sy-datlo
           IMPORTING
                last_day_of_month = w_fin_mois
           EXCEPTIONS
                day_in_no_date    = 1
                OTHERS            = 2.
      IF sy-subrc <> 0.
        MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
              WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
      ENDIF.
                              TOP-OF-PAGE                                *
    TOP-OF-PAGE.
      CALL FUNCTION 'Z_00_BC_TOP_OF_PAGE'
           EXPORTING
                p_linsz   = k_ligne
                p_pagno   = sy-pagno
                p_prog    = sy-cprog
                p_projet  = k_projet
                p_societe = k_societe
                p_sujet   = sy-title.
                              END-OF-PAGE                                *
    END-OF-PAGE.
                            AT SELECTION-SCREEN                          *
    FAE 26446 : ajout
    AT SELECTION-SCREEN ON BLOCK block3.
      IF NOT ( s_ekgrp IS INITIAL )
      AND  NOT ( s_dispo IS INITIAL ).
        MESSAGE e394(z03_mm).
      ENDIF.
      IF p_ekgrp = 'X'.
        IF s_ekgrp IS INITIAL.
          MESSAGE e395(z03_mm).
        ENDIF.
      ELSE.
        IF s_dispo IS INITIAL.
          MESSAGE e396(z03_mm).
        ENDIF.
      ENDIF.
    fae26446 fin ajout
    AT SELECTION-SCREEN ON BLOCK block2.
      IF p_pc = 'X'.
        IF p_fic_pc IS INITIAL.
    *Attention, il n'y a aucune adresse de sauvegarde pour le(s) fichier(s)
          MESSAGE e021(z03_mm).
        ENDIF.
      ELSE.
        IF p_fic_se IS INITIAL.
    *Attention, il n'y a aucune adresse de sauvegarde pour le(s) fichier(s)
          MESSAGE e021(z03_mm).
        ENDIF.
      ENDIF.
    Création du matchcode pour la selection du fichier local.
    AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_fic_pc.
      CALL FUNCTION 'WS_FILENAME_GET'
           EXPORTING
                def_filename     = p_fic_pc
                def_path         = 'C:'
                mask             = text-ma1
                mode             = 'S'
                title            = text-sel
           IMPORTING
                filename         = p_fic_pc
           EXCEPTIONS
                inv_winsys       = 1
                no_batch         = 2
                selection_cancel = 3
                selection_error  = 4
                OTHERS           = 5.
      IF sy-subrc NE 0 AND sy-subrc NE 3.
        MESSAGE e032(z03_mm).
      ENDIF.
                            START-OF-SELECTION                           *
    START-OF-SELECTION.
      PERFORM select_donnees.
    =================================================
    Liste des ARTICLES impactés pour les prévisions *
    =================================================
    ===================================
    PORTEFEUILLE DE COMMANDES D'ACHAT *
    ===================================
    Construction itb_pca à partir de EKKO/EKPO.
      w_index_ekpo  = 1.
      w_index_ekes  = 1.
      w_index_eket  = 1.
      w_index_mseg  = 1.
    SORT itb_ekko BY ebeln.           "-FAE26446
      SORT itb_ekpo BY ebeln ebelp.
      SORT itb_makt BY matnr spras.
      SORT itb_eket BY ebeln ebelp.
      SORT itb_ekes BY ebeln ebelp.
      SORT itb_mseg BY ebeln ebelp.
      SORT itb_mkpf BY mblnr mjahr.
      SORT itb_marc BY matnr werks.                             "+FAE26446
    FAE 26446 remplacement
    LOOP AT itb_ekko.
       LOOP AT itb_ekpo.
               FROM w_index_ekpo.
         IF itb_ekko-ebeln = itb_ekpo-ebeln.
      LOOP AT itb_ekpo.
        READ TABLE itb_marc WITH KEY
           matnr = itb_ekpo-matnr
           werks = itb_ekpo-werks BINARY SEARCH.
        CHECK sy-subrc = 0.
    FAE 26446 fin remplacement
        itb_pca-ebeln = itb_ekpo-ebeln.
        itb_pca-ebelp = itb_ekpo-ebelp.
      itb_pca-lifnr = itb_ekko-lifnr.   "-FAE26446
        itb_pca-lifnr = itb_ekpo-lifnr.                         "+FAE26446
        itb_pca-ekgrp = itb_ekpo-ekgrp.                         "+FAE26446
        itb_pca-dispo = itb_ekpo-dispo.                         "+FAE26446
        itb_pca-matnr = itb_ekpo-matnr.
        itb_pca-werks = itb_ekpo-werks.
      Recherche du libellé article
        READ TABLE itb_makt
                   WITH KEY matnr = itb_ekpo-matnr
                            spras = text-fra
                   BINARY SEARCH.
        IF sy-subrc = 0.
          itb_pca-maktx = itb_makt-maktx.
        ELSE.
          READ TABLE itb_makt
                    WITH KEY matnr = itb_ekpo-matnr
                             spras = text-ang
                    BINARY SEARCH.
          IF sy-subrc = 0.
            itb_pca-maktx = itb_makt-maktx.
          ENDIF.
        ENDIF.
        IF NOT itb_ekpo-bpumn IS INITIAL.
          itb_pca-menge = itb_ekpo-menge * itb_ekpo-bpumz /
                                           itb_ekpo-bpumn.
        ENDIF.
      Sélect° ds la table EKES des dates de livraisons et des qtés
      en transit
        CLEAR w_temoin_ar.
        CLEAR w_etens.
        LOOP AT itb_ekes
                FROM w_index_ekes.
          IF  itb_ekes-ebeln = itb_ekpo-ebeln
          AND itb_ekes-ebelp = itb_ekpo-ebelp.
            IF itb_ekes-ebtyp = text-arn.
              itb_pca-eindt = itb_ekes-eindt.
              w_temoin_ar = 'X'.
            ELSE.
            Si c'est une qté en transit alors on recupere
            la quantité et la date.
              IF itb_ekes-dabmg < itb_ekes-menge.
                itb_pca-qtran = itb_pca-qtran + itb_ekes-menge -
                                itb_ekes-dabmg.
              ENDIF.
              IF itb_ekes-etens > w_etens.
                w_etens = itb_ekes-etens.
                itb_pca-dtran = itb_ekes-eindt.
              ENDIF.
            ENDIF.
          ELSEIF itb_ekes-ebeln > itb_ekpo-ebeln
          OR ( itb_ekes-ebeln = itb_ekpo-ebeln
          AND itb_ekes-ebelp > itb_ekpo-ebelp ).
            w_index_ekes = sy-tabix.
            EXIT.
          ENDIF.
        ENDLOOP.
      S'il n'y a pas d'AR alors récupérat° de la date livraison dans EKET.
        LOOP AT itb_eket
                FROM w_index_eket.
          IF  itb_eket-ebeln = itb_ekpo-ebeln
          AND itb_eket-ebelp = itb_ekpo-ebelp.
            IF w_temoin_ar IS INITIAL.
              itb_pca-eindt = itb_eket-eindt.
            ENDIF.
            itb_pca-slfdt = itb_eket-slfdt.
          Calcul du portefeuille fournisseur à partir de la
          qté commandée et la qté reçue
            itb_pca-attdu = itb_pca-attdu + itb_eket-menge -
                            itb_eket-wemng.
          Calcul du montant du poste
            itb_pca-netpr = itb_ekpo-netpr * itb_pca-attdu.
            IF itb_ekpo-peinh NE 0.
              itb_pca-netpr = itb_pca-netpr / itb_ekpo-peinh.
            ENDIF.
          Calcul quantité réceptionnée.
            itb_pca-wemng = itb_pca-wemng + itb_eket-wemng.
          Calcul du retard en nombre de jours calendaires
          Le calcul du retard  ne doit pas prendre en compte
          le jour de livraison
            ADD 1 TO itb_eket-eindt.
            IF NOT itb_pca-attdu  IS INITIAL
            AND    itb_eket-eindt LT sy-datum.
            Calcul du retard en nombre de jours ouvrés
              CLEAR w_retard.
              CALL FUNCTION 'Z_00_BC_WORKDAYS_PER_PERIOD'
                   EXPORTING
                        date_deb = itb_eket-eindt
                        date_fin = sy-datum
                   IMPORTING
                        jours    = w_retard.
              itb_pca-rtard = itb_pca-rtard + w_retard .
            ENDIF.
          ELSEIF itb_eket-ebeln > itb_ekpo-ebeln
          OR (   itb_eket-ebeln = itb_ekpo-ebeln
          AND    itb_eket-ebelp > itb_ekpo-ebelp ).
            w_index_eket = sy-tabix.
            EXIT.
          ENDIF.
        ENDLOOP.
      Recherche de la derniere date de livraison.
        LOOP AT itb_mseg
                FROM w_index_mseg.
          IF  itb_mseg-ebeln = itb_ekpo-ebeln
          AND itb_mseg-ebelp = itb_ekpo-ebelp.
            READ TABLE itb_mkpf
                       WITH KEY mblnr = itb_mseg-mblnr
                                mjahr = itb_mseg-mjahr
                       BINARY SEARCH.
            IF sy-subrc = 0.
              IF itb_mkpf-bldat > itb_pca-bldat.
                itb_pca-bldat = itb_mkpf-bldat.
              ENDIF.
            ENDIF.
          ELSEIF itb_mseg-ebeln > itb_ekpo-ebeln
          OR (   itb_mseg-ebeln = itb_ekpo-ebeln
          AND    itb_mseg-ebelp > itb_ekpo-ebelp ).
            w_index_mseg = sy-tabix.
            EXIT.
          ENDIF.
        ENDLOOP.
        APPEND itb_pca.
        CLEAR itb_pca.
    FAE26446 suppression parag. suivant
         ELSEIF itb_ekpo-ebeln > itb_ekko-ebeln.
           w_index_ekpo = sy-tabix.
           EXIT.
         ENDIF.
       ENDLOOP.
    Fin FAE26446
      ENDLOOP.
    =========================
    PREVISIONS DE COMMANDES *
    =========================
      SORT itb_eord        BY matnr werks lifnr ekgrp.
      SORT itb_eban        BY matnr werks flief ekgrp.
      SORT itb_plaf        BY matnr plwrk flief.
      SORT itb_z03_bw_cmp1 BY matnr werks.
      SORT itb_z03_bw_cmp2 BY matnr werks."+DE3K937051
      SORT itb_pca         BY matnr werks lifnr.
      w_index_eban = 1.
      w_index_plaf = 1.
      w_index_z03_bw_cmp1 = 1.
      w_index_pca = 1.
      w_index_z03_bw_cmp2 = 1."+DE3K937051
    Remplissage de la table des prévisions de commande.
      LOOP AT itb_eord.
        CLEAR: str_prev_pfc,
               w_trouve.
        MOVE-CORRESPONDING itb_eord TO str_index1.
        MOVE-CORRESPONDING itb_eord TO str_index3_eord.
        MOVE-CORRESPONDING itb_eord TO itb_prev_cde.
      Recherche dans table division/article (MARC) afin de déterminer si
      article PFS (prod fabriqué à stock) ou PFC (Prod fabriqué sur cde)
        AT NEW werks.
          READ TABLE itb_marc_eord
                     WITH KEY matnr = itb_eord-matnr
                              werks = itb_eord-werks
                     BINARY SEARCH.
          IF sy-subrc NE 0.
            CLEAR itb_marc_eord.
          ENDIF.
        ENDAT.
    a - Prévisions pour les PFS : DA + OP *
    *Calcul des quantités de commande.
        IF itb_eord-disls = text-tl1.
          itb_prev_cde-bstmi =  itb_eord-bstfe.
        ELSEIF itb_eord-disls = text-tl2
        OR     itb_eord-disls = text-tl3.
          IF  itb_eord-bstrf NE 0
          AND itb_eord-bstmi = 0
          AND itb_eord-bstma = 0.
            itb_prev_cde-bstmi = itb_eord-bstrf.
          ELSEIF itb_eord-bstrf NE 0
          AND    itb_eord-bstmi NE 0.
            itb_prev_cde-bstmi = itb_eord-bstmi.
          ELSEIF itb_eord-bstrf = itb_eord-bstma
          AND    itb_eord-bstrf NE 0
          AND    itb_eord-bstmi = 0.
            itb_prev_cde-bstmi = itb_eord-bstma.
          ENDIF.
        ENDIF.
      si article PFS (Prod fabriqué à stock) recherche des
      demandes d'achat ou ordres planfiés
        IF itb_marc_eord-strgr IN r_type_pfs.
      Récupérat° calendrier de la division pour calcul correct lors de
      l'ajout de eban-webaz ou plaf-webaz jours ouvrés
          CLEAR w_trouve_pfs ."+DE3K937051
          READ TABLE itb_t001w
                     WITH KEY werks = itb_eord-werks
                     BINARY SEARCH.
          IF sy-subrc = 0.
            LOOP AT itb_eban
                    FROM w_index_eban.
              MOVE-CORRESPONDING itb_eban TO str_index2.
              IF str_index1 = str_index2.
                w_trouve_pfs = 'X'."+DE3K937051
              si qte commandées pour la DA  < quantité de la DA
                IF itb_eban-bsmng < itb_eban-menge.
                ajout de quantité de la DA - qte  commandée pour la DA
                  PERFORM affect_da.
                ENDIF.
              ELSEIF str_index2 > str_index1.
                w_index_eban = sy-tabix.
                EXIT.
              ENDIF.
            ENDLOOP.
          ENDIF.
        ajout des quantité des OP (ordres planifiés)
          LOOP AT itb_plaf
                  FROM w_index_plaf.
            MOVE-CORRESPONDING itb_plaf TO str_index4.
            str_index4-werks = itb_plaf-plwrk.
          str_index4-lifnr = itb_plaf-flief.
            IF str_index4 = str_index3_eord.
            Ajout de webaz jours ouvrés à pedtr
              CALL FUNCTION 'Z_03_MM_ADD_TO_FACTORYDATE'
                   EXPORTING
                        i_date        = itb_plaf-pedtr
                        i_calendar_id = itb_t001w-fabkl
                        i_nb_days     = itb_plaf-webaz
                   IMPORTING
                        o_date        = w_dat_op
                   EXCEPTIONS
                        conv_error    = 1
                        OTHERS        = 2.
              IF sy-subrc
       If forecasts found in Z03_BW_CMP2 for the article
       IF w_trouve_pfs = 'X'."-DE3K937602
    Recalculation prev month M in fct of Nb of wrought days of the month
        IF NOT itb_prev_cde-men00 IS INITIAL.
       one does not hold any more account of the day in progress
          w_lendemain = w_date0 + 1.
          CLEAR:w_nb_j,w_nb_j_tot.         "DE3K938206+
          CALL FUNCTION 'Z_00_BC_WORKDAYS_PER_PERIOD'
               EXPORTING
                    date_deb = w_lendemain
                    date_fin = w_fin_mois
               IMPORTING
                    jours    = w_nb_j.
          CALL FUNCTION 'Z_00_BC_WORKDAYS_PER_MONTH'
               EXPORTING
                    date  = w_lendemain
               IMPORTING
                    jours = w_nb_j_tot.
          itb_prev_cde-men00  = itb_prev_cde-men00 * w_nb_j / w_nb_j_tot
    *CLA DE3K925301 FAE27197
    *to round has the higher entirety
        itb_prev_cde-men00  = ceil( itb_prev_cde-men00 ). "DE3K938206-
        ENDIF.
       ENDIF."-DE3K937602
    *End change BNI
    b - Prévisions pour les PFC (Z03_BW_CMP1 puis rééquilibrage) *
      Recherche des previsions dans Z03_BW_CMP1
      si article PFC (Prod fabriqué sur cde) recherche des prévisions
        IF  NOT itb_marc_eord-strgr IN r_type_pfs.
          CLEAR str_prev_pfc.
          MOVE-CORRESPONDING itb_eord TO str_prev_pfc.
          CLEAR w_trouve_pfc .
          LOOP AT itb_z03_bw_cmp1
                  FROM w_index_z03_bw_cmp1.
            MOVE-CORRESPONDING itb_z03_bw_cmp1 TO str_index7.
            MOVE-CORRESPONDING itb_eord TO str_index6.
            IF str_index6 = str_index7.
          si on trouve des prévisions dans z03_bw_cmp1 pour la source
          d'appro eord alors c'est un article  PFC
              w_trouve_pfc = 'X'.
              CASE itb_z03_bw_cmp1-pdatu+0(6).
                WHEN w_date0+0(6).
                  str_prev_pfc-men00 = itb_z03_bw_cmp1-plnmg.
                WHEN w_date1+0(6).
                  str_prev_pfc-men01 = itb_z03_bw_cmp1-plnmg.
                WHEN w_date2+0(6).
                  str_prev_pfc-men02 = itb_z03_bw_cmp1-plnmg.
                WHEN w_date3+0(6).
                  str_prev_pfc-men03 = itb_z03_bw_cmp1-plnmg.
                WHEN w_date4+0(6).
                  str_prev_pfc-men04 = itb_z03_bw_cmp1-plnmg.
                WHEN w_date5+0(6).
                  str_prev_pfc-men05 = itb_z03_bw_cmp1-plnmg.
                WHEN w_date6+0(6).
                  str_prev_pfc-men06 = itb_z03_bw_cmp1-plnmg.
                WHEN OTHERS.
              ENDCASE.
            ELSEIF str_index7 > str_index6.
              w_index_z03_bw_cmp1 = sy-tabix.
              EXIT.
            ENDIF.
          ENDLOOP.
    *Begin change BNI
        Si des prévisions trouvées dans Z03_BW_CMP1 pour l'article
          IF w_trouve_pfc = 'X'.
          Recalcul prev mois M en fct du nb de jours ouvrés du mois
            IF NOT str_prev_pfc-men00 IS INITIAL.
            on ne tient plus compte du jour en cours
              w_lendemain = w_date0 + 1.
              CLEAR:w_nb_j,w_nb_j_tot.               "DE3K938206+
              CALL FUNCTION 'Z_00_BC_WORKDAYS_PER_PERIOD'
                   EXPORTING
                        date_deb = w_lendemain
                        date_fin = w_fin_mois
                   IMPORTING
                        jours    = w_nb_j.
              CALL FUNCTION 'Z_00_BC_WORKDAYS_PER_MONTH'
                   EXPORTING
                        date  = w_lendemain
                   IMPORTING
                        jours = w_nb_j_tot.
              str_prev_pfc-men00 = str_prev_pfc-men00 * w_nb_j / w_nb_j_tot.
    *CLA DE3K925301 FAE27197
    *arrondir a l'entier supèrieur
              str_prev_pfc-men00 = ceil( str_prev_pfc-men00 ).
            ENDIF.
          Equilibrage PFC : commande/prévision du mois
          Recherche COMMANDES cumulées pour M à M+6
            CLEAR str_pca_pfc.
            LOOP AT itb_pca
                    FROM w_index_pca.
              MOVE-CORRESPONDING itb_pca TO str_index5.
              IF str_index5 = str_index3_eord.
                IF NOT itb_pca-menge IS INITIAL.
                  CASE itb_pca-eindt+0(6).
                    WHEN w_date0+0(6).
                      IF itb_pca-eindt >= w_date0.
                      str_pca_pfc-men00 = str_pca_pfc-men00 + itb_pca-menge.
                      ENDIF.
                    WHEN w_date1+0(6).
                      str_pca_pfc-men01 = str_pca_pfc-men01 + itb_pca-menge.
                    WHEN w_date2+0(6).
                      str_pca_pfc-men02 = str_pca_pfc-men02 + itb_pca-menge.
                    WHEN w_date3+0(6).
                      str_pca_pfc-men03 = str_pca_pfc-men03 + itb_pca-menge.
                    WHEN w_date4+0(6).
                      str_pca_pfc-men04 = str_pca_pfc-men04 + itb_pca-menge.
                    WHEN w_date5+0(6).
                      str_pca_pfc-men05 = str_pca_pfc-men05 + itb_pca-menge.
                    WHEN w_date6+0(6).
                      str_pca_pfc-men06 = str_pca_pfc-men06 + itb_pca-menge.
                  ENDCASE.
                ENDIF."NOT itb_pca-menge IS INITIAL
              ELSEIF str_index5 > str_index3_eord.
                w_index_pca = sy-tabix.
                EXIT.
              ENDIF.
            ENDLOOP."itb_pca
    *. Equilibrer commande / prévision des mois : diminuer la quantité de
    prévision de chaque mois par le portefeuille de commande client du
    mois*. Si ce solde est négatif alors lui donner la valeur 0.
            w_i = 0.
          Ajustement commandes/prévisions pour les mois M à M+6
            WHILE w_i .
            Pour un mois, SI Prévisions > Commandes en cours
              IF .
              Prévisions = Prévisions - Commandes en cours
                 = 0.
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    You check in SM50 by executing the programing, You will come to know which select is taking more time and accordingly you modify that select.
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    2) If possible use for all entries in addition
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    5) You can also use inner joins
    6) You can try to put the data from the first select statement into an Itab and then in order to select the data from the second table use for all entries in.
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    https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/5d0db4c9-0e01-0010-b68f-9b1408d5f234
    ABAP performance depends upon various factors and in devicded in three parts:
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    also if u find runtime of parts of codes then use :
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    *To turn runtim analysis off within ABAP code insert the following code
    SET RUN TIME ANALYZER OFF.
    Always check the driver internal tables is not empty, while using FOR ALL ENTRIES
    Avoid for all entries in JOINS
    Try to avoid joins and use FOR ALL ENTRIES.
    Try to restrict the joins to 1 level only ie only for tables
    Avoid using Select *.
    Avoid having multiple Selects from the same table in the same object.
    Try to minimize the number of variables to save memory.
    The sequence of fields in 'where clause' must be as per primary/secondary index ( if any)
    Avoid creation of index as far as possible
    Avoid operators like <>, > , < & like % in where clause conditions
    Avoid select/select single statements in loops.
    Try to use 'binary search' in READ internal table. Ensure table is sorted before using BINARY SEARCH.
    Avoid using aggregate functions (SUM, MAX etc) in selects ( GROUP BY , HAVING,)
    Avoid using ORDER BY in selects
    Avoid Nested Selects
    Avoid Nested Loops of Internal Tables
    Try to use FIELD SYMBOLS.
    Try to avoid into Corresponding Fields of
    Avoid using Select Distinct, Use DELETE ADJACENT
    Check the following Links
    Re: performance tuning
    Re: Performance tuning of program
    http://www.sapgenie.com/abap/performance.htm
    http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
    check the below link
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    http://www.sap-press.com/product.cfm?account=&product=H973
    http://www.sap-img.com/abap/more-than-100-abap-interview-faqs.htm
    http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
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    http://www.sap-img.com/abap/performance-tuning-for-data-selection-statement.htm
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    http://www.cba.nau.edu/haney-j/CIS497/Assignments/Debugging.doc
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    performance issues...
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    performance tuning
    performance tuning
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    2 Avoid for all entries in JOINS
    3 Try to avoid joins and use FOR ALL ENTRIES.
    4 Try to restrict the joins to 1 level only ie only for 2 tables
    5 Avoid using Select *.
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    7 Try to minimize the number of variables to save memory.
    8 The sequence of fields in 'where clause' must be as per primary/secondary index ( if any)
    9 Avoid creation of index as far as possible
    10 Avoid operators like <>, > , < & like % in where clause conditions
    11 Avoid select/select single statements in loops.
    12 Try to use 'binary search' in READ internal table. Ensure table is sorted before using BINARY SEARCH.
    13 Avoid using aggregate functions (SUM, MAX etc) in selects ( GROUP BY , HAVING,)
    14 Avoid using ORDER BY in selects
    15 Avoid Nested Selects
    16 Avoid Nested Loops of Internal Tables
    17 Try to use FIELD SYMBOLS.
    18 Try to avoid into Corresponding Fields of
    19 Avoid using Select Distinct, Use DELETE ADJACENT.
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    Anji

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    performance issues...
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    Performance issues
    performance tuning
    performance tuning
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