Function module for VBFA table

Question

Hi Gurus,
Please Help me on this Issue..
I want to retrieve data from vbfa table..while making query to retrieve data from vbfa tabl,its making performance issue on production server.
    SELECT vbelv
           vbeln
                INTO TABLE i_ref_data
    FROM vbfa FOR ALL ENTRIES IN i_billing_main
    WHERE
         vbelv   EQ i_billing_main-vbeln AND
         vbtyp_n EQ c_vbtyp_n.
so i have tried to retrieve data using functiom module "RV_ORDER_FLOW_INFORMATION" .in this function i was not able to pass multiple document no to this function module so put this function module inside the loop but this option also making performance issue..
LOOP AT i_billing_main_temp INTO wa_billing_main.
    CLEAR : wa_comwa,wa_vbfa.
    REFRESH i_vbfa.
    wa_comwa-vbeln = wa_billing_main-vbeln.
This function module used for retrieving document flow data from VBFA
    CALL FUNCTION 'RV_ORDER_FLOW_INFORMATION'
      EXPORTING
        comwa    = wa_comwa
      TABLES
        vbfa_tab = i_vbfa.
    SORT i_vbfa BY vbelv vbeln vbtyp_n.
    DELETE ADJACENT DUPLICATES FROM i_vbfa COMPARING vbelv vbeln vbtyp_n.
    SORT i_vbfa BY vbtyp_n.
    READ TABLE i_vbfa
             INTO wa_vbfa
             WITH KEY vbtyp_n  =  c_vbtyp_n
    BINARY SEARCH.
    IF sy-subrc EQ 0.
      wa_ref_data-vbeln = wa_vbfa-vbeln.
      wa_ref_data-vbelv = wa_billing_main-vbeln.
      APPEND wa_ref_data TO i_ref_data.
    ENDIF.
  ENDLOOP.
so kindly give me the solution for improving performance of this issue.
Is it having any function module to pass multiple inputs to the function module.?
Regards
P.Senthil Kumar
Edited by: senthil kumar on Mar 23, 2009 12:23 PM

Answer 1

Please add  check condition to check  internal table is blank.
if not i_billing_main[] is initial.
SELECT vbelv
vbeln
INTO TABLE i_ref_data
FROM vbfa FOR ALL ENTRIES IN i_billing_main
WHERE
vbelv EQ i_billing_main-vbeln AND
vbtyp_n EQ c_vbtyp_n.
endif.
This is the best possible way to retrive data from VBFA table.
Other method you adopted will take more time since you are calling the FM in loop.
Please check ST05 trace for your above query to see if primary index is being used. Else contact Basis to help you out.