Performance Issue in a Query

Question

Hi,
I have written a query,
SELECT VBAK~VKORG VBAK~VBTYP VBAK~AUART VBAK~VTWEG VBAK~SPART
             VBAK~KUNNR VBAK~KVGR1 VBAK~KVGR3 VBAP~WERKS VBAP~MATNR
             VBAP~MVGR1 VBAP~MVGR2 VBAP~MVGR3 VBAP~MVGR3 VBAP~MVGR4
             VBAP~MVGR5 VBEP~VBELN VBEP~POSNR VBEP~ETENR VBEP~MBDAT
             VBEP~WADAT
             VBAP~KDMAT VBAP~ERDAT VBAP~ERZET VBAP~KWMENG
             INTO CORRESPONDING FIELDS OF
             TABLE INT_OPEN_SCH_LINES
             FROM VBAK
             INNER JOIN VBAP ON VBAK~VBELN = VBAP~VBELN
             INNER JOIN VBEP ON VBEP~POSNR = VBAP~POSNR AND
                                VBEP~VBELN = VBAK~VBELN AND
                                VBEP~VBELN = VBAP~VBELN
             FOR ALL ENTRIES IN T_TVEP
             WHERE VBAP~WERKS IN S_WERKS   AND
                   VBAP~MATNR IN S_MATNR   AND
                   VBAP~MATKL IN S_MATKL   AND
                   VBAP~ABGRU IN S_ABGRU   AND
                   VBAK~KUNNR IN S_KUNNR   AND
                   VBEP~ETENR = C_0001 AND
                   VBEP~WADAT = D0         AND
                   VBAK~VBTYP IN S_VBTYP   AND
                   VBAK~AUART IN S_AUART   AND
                   VBEP~ETTYP = T_TVEP-ETTYP AND
                   VBAK~KVGR3 IN S_KVGR3.
This is working fine in Development and Production systems and takes just 2 sec to execute. But the code takes more than 5 min to execute in Quality system. What could be the problem? The query cannot be modified, as this is the requirement.
Please help me out.
Thanks,
DhanaLakshmi M S

Answer 1

Hi,
As Christine Evans  mentioned mostly likely this could be the issue. Check out in quality system the statistics are upto date or not. If the statistics are not upto date, optimizer will choose the wrong index if there is no statistics mostly likely could be full table scans in the tables included in the where clause. which will take longer time. Which database you are using ?? if you are using oracle 10g, compare the following database parameter in prod and qa. make necessary changes for these parameters if needed.
Refer SAP Note 830576.
OPTIMIZER_INDEX_CACHING
OPTIMIZER_INDEX_COST_ADJ
INDEXJOIN_ENABLED
Hope this helps,
Regards
Dileep