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RE: Query takes more time when number of IN List value increases

From: DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM>
Date: Mon, 03 Feb 2003 06:49:22 -0800
Message-ID: <F001.0054204D.20030203064922@fatcity.com> 





Ranganath


   I notice that the "cost" for the explain plan is identical. Keep in mind
that the explain plan is a good quick look at how Oracle intends to perform
the query, but is not an actual execution. It can be fooled, and even make
bad choices. When I encounter a query where explain plan isn't giving me
good information, I turn trace on and then run the results through tkprof. 
I entered "tkprof tutorial" in Google and received several good links, this
one came out on top:


http://info-it.umsystem.edu/oradocs/doc/server/doc/A48506/strace.htm#1018



Dennis Williams


DBA, 40%OCP



Lifetouch, Inc.


dwilliams_at_lifetouch.com 




-----Original Message-----


[mailto:Ranganath.Krishnaswamy_at_blr.hpsglobal.com]
Sent: Monday, February 03, 2003 3:59 AM


To: Multiple recipients of list ORACLE-L




Hi Listers,



I have the below query which takes 36 sec. to execute:



SELECT /*+ordered*/


   S.HOUSEBILL,


   OH.ORDER_REF_NO,
   V.CONTAINER_NUM,
   S.AEI_REFERENCE,
   CE1.SEQUENCE,




   TL1.COMPONENT_VALUE,



   TL2.COMPONENT_VALUE,(


      SELECT
         to_char(SCT1.TIMESTAMP,


         'YYYYMMDDHH24MISS')

      FROM
         SHIPMENT_CONTAINER_TIMESTAMP SCT1
      WHERE
         SCT1.EVENT_ID = XM1.EVENT_ID
         AND SCT1.SHIPMENT_ID = S.SHIPMENT_ID
         AND SCT1.CONTAINER_ID = v.CONTAINER_ID
         AND XM1.TABLE_NAME = 'SHIPMENT_CONTAINER_TIMESTAMP'
      UNION
      SELECT
         to_char(ST1.TIMESTAMP,


         'YYYYMMDDHH24MISS')

      FROM
         SHIPMENT_TIMESTAMP ST1
      WHERE
         ST1.EVENT_ID = XM1.ALT_EVENT_ID
         AND ST1.SHIPMENT_ID = S.SHIPMENT_ID
         AND XM1.ALT_EVENT_ID IS NOT NULL
         AND XM1.TABLE_NAME ='SHIPMENT_CONTAINER_TIMESTAMP'
         AND NOT EXISTS (
            SELECT
               SCT1.TIMESTAMP
            FROM
               SHIPMENT_CONTAINER_TIMESTAMP SCT1
            WHERE
               SCT1.EVENT_ID = XM1.EVENT_ID
               AND SCT1.SHIPMENT_ID = S.SHIPMENT_ID
               AND SCT1.CONTAINER_ID = v.CONTAINER_ID
               AND XM1.TABLE_NAME ='SHIPMENT_CONTAINER_TIMESTAMP'
         )
      UNION
      SELECT
         to_char(ST1.TIMESTAMP,


         'YYYYMMDDHH24MISS')

      FROM
         SHIPMENT_TIMESTAMP ST1
      WHERE
         XM1.TABLE_NAME = 'SHIPMENT_TIMESTAMP'
         AND ST1.SHIPMENT_ID = S.SHIPMENT_ID
         AND ST1.EVENT_ID = XM1.EVENT_ID
      UNION
      SELECT
         to_char(OT1.TIMESTAMP,


         'YYYYMMDDHH24MISS')

      FROM
         ORDER_TIMESTAMP OT1
      WHERE
         OT1.EVENT_ID = XM1.EVENT_ID
         AND OT1.SHIPMENT_ORDER_ID = SO.SHIPMENT_ORDER_ID
         AND XM1.TABLE_NAME = 'ORDER_TIMESTAMP'


   ) AS FROM_DATE,



   S.SHIPMENT_ID,



   OH.ORDER_ID,



   V.CONTAINER_ID



FROM



   SHIPMENT S,



   V_SHIP V,



   SHIPMENT_CUSTOMER SC,



   ORDER_HEADER OH,



   SHIPMENT_ORDER SO,



   TRAFFIC_LANE TL1,



   TRAFFIC_LANE TL2,



   CUSTOMER_EVENT CE1,



   XM_FIELD XM1



WHERE 



   (SC.CUSTOMER_MOT_ID = 1040130842248


   AND SC.SHIPMENT_ID = S.SHIPMENT_ID
   AND trunc(S.MSG_CREATION_DATE) >= trunc(sysdate - 90)
   AND trunc(S.MSG_CREATION_DATE) <= trunc(sysdate)


   AND S.SHIPMENT_ID = V.SHIPMENT_ID



   AND V.SHIPMENT_ID = SO.SHIPMENT_ID(+)

   AND SO.ORDER_ID = OH.ORDER_ID(+))



   AND (TL1.TRAFFIC_LANE_NO = TL2.TRAFFIC_LANE_NO


   AND TL1.LANE_ID = 10413530577392 
   and TL2.LANE_ID = 10413530577393
   AND TL2.COMPONENT_VALUE = S.ORG_STATION_CODE
   AND TL1.COMPONENT_VALUE = S.DEST_STATION_CODE)
   AND CE1.CUSTOMER_MOT_ID = 1040130842248
   and XM1.FIELD_ID = CE1.FIELD_ID
   AND XM1.table_name in ('SHIPMENT_TIMESTAMP')


ORDER BY



   S.SHIPMENT_ID,



   ORDER_ID,



   CONTAINER_ID,



   CE1.SEQUENCE


Here is the explain plan for the query:


Operation	Object Name	Rows	Bytes	Cost	TQ	In/Out
PStart	PStop

SELECT STATEMENT Hint=CHOOSE		349  	 	23589

  SORT ORDER BY		349  	103 K	23589

    HASH JOIN		349  	103 K	23561

      TABLE ACCESS BY INDEX ROWID	XM_FIELD	6  	348  	2

        INDEX RANGE SCAN	XM_FIELD_TABLE_NAME	6  	 	1

      MERGE JOIN CARTESIAN		5 K	1 M	23537

        NESTED LOOPS		182  	41 K	23355

          HASH JOIN		364 K	67 M	23355

            TABLE ACCESS BY INDEX ROWID	TRAFFIC_LANE	5  	190  	1

              INDEX RANGE SCAN	TL_LANE_ID_VALUE	5  	 	2

            HASH JOIN OUTER		7 M	1G	6630

              HASH JOIN OUTER		197 K	27 M	2918

                HASH JOIN		197 K	20 M	1096

                  TABLE ACCESS BY INDEX ROWID	SHIPMENT_CUSTOMER	39
1014  	2  	 	      	             	 
                    INDEX RANGE SCAN	SHIP_CUS_CMOT_ID	39
1  	 	      	             	 
                  HASH JOIN		506 K	39 M	450

                    TABLE ACCESS BY INDEX ROWID	SHIPMENT	102  	4 K
6  	 	      	             	 
                      INDEX RANGE SCAN	SHIP_MSG_CREATION_DT	102
2  	 	      	             	 
                    VIEW	V_SHIP	496 K	16 M	124

                      HASH JOIN OUTER		496 K	22 M	124

                        INDEX FAST FULL SCAN	SHP_SHP_ID_DEST_COUNTRY	40 K
514 K	4  	 	      	             	 
                        TABLE ACCESS FULL	SHIPMENT_CONTAINER	1 K
41 K	3  	 	      	             	 
                TABLE ACCESS FULL	SHIPMENT_ORDER	82  	3 K	1

              TABLE ACCESS FULL	ORDER_HEADER	3 K	36 K	7

          INDEX UNIQUE SCAN	XPKTRAFFIC_LANE	5  	190

        SORT JOIN		32  	416  	23537

          TABLE ACCESS BY INDEX ROWID	CUSTOMER_EVENT	32  	416  	1

            INDEX RANGE SCAN	CUST_EVENT_CMOT_ID	32






But when the query is changed to below query it takes 20 min. to execute:



SELECT /*+ordered*/


   S.HOUSEBILL,


   OH.ORDER_REF_NO,
   V.CONTAINER_NUM,
   S.AEI_REFERENCE,
   CE1.SEQUENCE,




   TL1.COMPONENT_VALUE,



   TL2.COMPONENT_VALUE,(


      SELECT
         to_char(SCT1.TIMESTAMP,


         'YYYYMMDDHH24MISS')

      FROM
         SHIPMENT_CONTAINER_TIMESTAMP SCT1
      WHERE
         SCT1.EVENT_ID = XM1.EVENT_ID
         AND SCT1.SHIPMENT_ID = S.SHIPMENT_ID
         AND SCT1.CONTAINER_ID = v.CONTAINER_ID
         AND XM1.TABLE_NAME = 'SHIPMENT_CONTAINER_TIMESTAMP'
      UNION
      SELECT
         to_char(ST1.TIMESTAMP,


         'YYYYMMDDHH24MISS')

      FROM
         SHIPMENT_TIMESTAMP ST1
      WHERE
         ST1.EVENT_ID = XM1.ALT_EVENT_ID
         AND ST1.SHIPMENT_ID = S.SHIPMENT_ID
         AND XM1.ALT_EVENT_ID IS NOT NULL
         AND XM1.TABLE_NAME ='SHIPMENT_CONTAINER_TIMESTAMP'
         AND NOT EXISTS (
            SELECT
               SCT1.TIMESTAMP
            FROM
               SHIPMENT_CONTAINER_TIMESTAMP SCT1
            WHERE
               SCT1.EVENT_ID = XM1.EVENT_ID
               AND SCT1.SHIPMENT_ID = S.SHIPMENT_ID
               AND SCT1.CONTAINER_ID = v.CONTAINER_ID
               AND XM1.TABLE_NAME ='SHIPMENT_CONTAINER_TIMESTAMP'
         )
      UNION
      SELECT
         to_char(ST1.TIMESTAMP,


         'YYYYMMDDHH24MISS')

      FROM
         SHIPMENT_TIMESTAMP ST1
      WHERE
         XM1.TABLE_NAME = 'SHIPMENT_TIMESTAMP'
         AND ST1.SHIPMENT_ID = S.SHIPMENT_ID
         AND ST1.EVENT_ID = XM1.EVENT_ID
      UNION
      SELECT
         to_char(OT1.TIMESTAMP,


         'YYYYMMDDHH24MISS')

      FROM
         ORDER_TIMESTAMP OT1
      WHERE
         OT1.EVENT_ID = XM1.EVENT_ID
         AND OT1.SHIPMENT_ORDER_ID = SO.SHIPMENT_ORDER_ID
         AND XM1.TABLE_NAME = 'ORDER_TIMESTAMP'


   ) AS FROM_DATE,



   S.SHIPMENT_ID,



   OH.ORDER_ID,



   V.CONTAINER_ID



FROM



   SHIPMENT S,



   V_SHIP V,



   SHIPMENT_CUSTOMER SC,



   ORDER_HEADER OH,



   SHIPMENT_ORDER SO,



   TRAFFIC_LANE TL1,



   TRAFFIC_LANE TL2,



   CUSTOMER_EVENT CE1,



   XM_FIELD XM1



WHERE 



   (SC.CUSTOMER_MOT_ID = 1040130842248


   AND SC.SHIPMENT_ID = S.SHIPMENT_ID
   AND trunc(S.MSG_CREATION_DATE) >= trunc(sysdate - 90)
   AND trunc(S.MSG_CREATION_DATE) <= trunc(sysdate)


   AND S.SHIPMENT_ID = V.SHIPMENT_ID



   AND V.SHIPMENT_ID = SO.SHIPMENT_ID(+)

   AND SO.ORDER_ID = OH.ORDER_ID(+))



   AND (TL1.TRAFFIC_LANE_NO = TL2.TRAFFIC_LANE_NO


   AND TL1.LANE_ID = 10413530577392 
   and TL2.LANE_ID = 10413530577393
   AND TL2.COMPONENT_VALUE = S.ORG_STATION_CODE
   AND TL1.COMPONENT_VALUE = S.DEST_STATION_CODE)
   AND CE1.CUSTOMER_MOT_ID = 1040130842248
   and XM1.FIELD_ID = CE1.FIELD_ID
   AND XM1.table_name in ('SHIPMENT_TIMESTAMP', 'ORDER_TIMESTAMP,


'SHIPMENT_CONTAINER_TIMESTAMP')



ORDER BY



   S.SHIPMENT_ID,



   ORDER_ID,



   CONTAINER_ID,



   CE1.SEQUENCE


Here is the explain plan for the query:


Operation	Object Name	Rows	Bytes	Cost	TQ	In/Out
PStart	PStop

SELECT STATEMENT Hint=CHOOSE		349  	 	23589

  SORT ORDER BY		349  	103 K	23589

    HASH JOIN		349  	103 K	23561

      INLIST ITERATOR

        TABLE ACCESS BY INDEX ROWID	XM_FIELD	6  	348  	2

          INDEX RANGE SCAN	XM_FIELD_TABLE_NAME	6  	 	2

      MERGE JOIN CARTESIAN		5 K	1 M	23537

        NESTED LOOPS		182  	41 K	23355

          HASH JOIN		364 K	67 M	23355

            TABLE ACCESS BY INDEX ROWID	TRAFFIC_LANE	5  	190  	1

              INDEX RANGE SCAN	TL_LANE_ID_VALUE	5  	 	2

            HASH JOIN OUTER		7 M	1G	6630

              HASH JOIN OUTER		197 K	27 M	2918

                HASH JOIN		197 K	20 M	1096

                  TABLE ACCESS BY INDEX ROWID	SHIPMENT_CUSTOMER	39
1014  	2  	 	      	             	 
                    INDEX RANGE SCAN	SHIP_CUS_CMOT_ID	39
1  	 	      	             	 
                  HASH JOIN		506 K	39 M	450

                    TABLE ACCESS BY INDEX ROWID	SHIPMENT	102  	4 K
6  	 	      	             	 
                      INDEX RANGE SCAN	SHIP_MSG_CREATION_DT	102
2  	 	      	             	 
                    VIEW	V_SHIP	496 K	16 M	124

                      HASH JOIN OUTER		496 K	22 M	124

                        INDEX FAST FULL SCAN	SHP_SHP_ID_DEST_COUNTRY	40 K
514 K	4  	 	      	             	 
                        TABLE ACCESS FULL	SHIPMENT_CONTAINER	1 K
41 K	3  	 	      	             	 
                TABLE ACCESS FULL	SHIPMENT_ORDER	82  	3 K	1

              TABLE ACCESS FULL	ORDER_HEADER	3 K	36 K	7

          INDEX UNIQUE SCAN	XPKTRAFFIC_LANE	5  	190

        SORT JOIN		32  	416  	23537

          TABLE ACCESS BY INDEX ROWID	CUSTOMER_EVENT	32  	416  	1

            INDEX RANGE SCAN	CUST_EVENT_CMOT_ID	32






Can anybody let me know as to how do I bring down the response time of the
query if the IN List is hardcoded with more than 1 value?  Any help in this
regard is very much appreciated.



Thanks and Regards,



Ranganath


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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Krishnaswamy, Ranganath
  INET: Ranganath.Krishnaswamy_at_blr.hpsglobal.com

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Received on Mon Feb 03 2003 - 08:49:22 CST












Original text of this message













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