I'm facing performance issue while accessing the PLAF Table

Question

Dar all,
I'm facing performance issue while accessing the PLAF Table.
The START-OF-SELECTION of the report starts with the following select query.
    SELECT plnum  pwwrk matnr gsmng psttr FROM plaf
    INTO CORRESPONDING FIELDS OF TABLE it_tab
    WHERE matnr IN s_matnr
      AND pwwrk = p_pwwrk
      AND psttr IN s_psttr
      AND auffx = 'X'
      AND paart = 'LA' .
While executing the report in the Quality system it does not face any performance issue...
When it comes to Production System the above said select query itself it is taking 15 - 20 minutes time to move further.
Kindly help me to over come this problem...
Regards,
Jessi

Answer 1

Hi,
"Just implement its primary Key
WHERE PLNUM BETWEEN '0000000001' AND '9999999999' " By this you are implementing the Primary Key
This statement has nothing to do with performance, because system is not able to use primary key or uses every row.
Jessica, your query uses secondary index created by SAP:
1     (Material, plant) which uses fields MANDT MATNR and PLWRK.
but it is not suitable in your case.
You can consider adding new one, which would containt all fields: MANDT, MATNR, PWWRK, PSTTR AUFFX PAART
or - but it depends on number of rows meeting and not meeting (auffx = 'X' AND paart = 'LA' ) condition.
It could speed the performance, if you would create secondary index based on fields MANDT, MATNR, PWWRK, PSTTR
and do like Ramchander suggested: remove AUFFX and PAART from index and where section, and remove these unwanted rows
after the query using DELETE statement.
Regards,
Przemysław
Please check how many rows in production system