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02.08.2005 at 11:34PM PST, ID: 21307483
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8.0

Query optimization - help required

Asked by INDIRA_K in Oracle Database

Tags: , , ,

I have a query which is having a huge performance degrade. Could you help in optimizaiton of the same.
Select
DPS_NUM,
DPS_TYPE,
DPS_STATUS,  
CUSTOMER_TYPE,
CUSTOMER_NAME,
SEVERITY_ID,
PRODUCT_NO,  
ENGG_PART_ETA,
DECODE(ENGINEER_PART_ETA_FLAG,'','None',ENGINEER_PART_ETA_FLAG) ENGINEER_PART_ETA_FLAG ,
PROBLEM_COUNT,
DPS_ALERT_FLAG,
DPS_OWNER,  
REASON_CODE,  
DPS_REPEAT_DISPATCH_FLAG,
DPS_ACK_FLAG,  
CALL_AGE,  
TAKE,  
CLAIM_ALERT_FLAG,  
REPEATDISPATCH_ALERT_FLAG,  
SEVERITY_ALERT_FLAG,  
DPS_TYPE_FLAG,  
SERVICE_ACC_DATE_TIME,
DPS_VERSION_NUM,
IS_TANDEM_CLIENT_UPDATE
FROM
        (
        SELECT
        VWJDPSIS.DPS_NUM AS DPS_NUM,
        VWJDPSIS.DPS_TYPE as DPS_TYPE,
        VWJDPSIS.DPS_STATUS as DPS_STATUS,
        ECCPRD.fnGetRefCodeValue(VWJDPSIS.CALL_TYPE,'CUSTOMERTYPE') as CUSTOMER_TYPE,
        VWJDPSIS.CUSTOMER_NAME as CUSTOMER_NAME,
        ECCPRD.fnGetRefCodeValue(VWJDPSIS.SEVERITY_ID,'SEVERITYCODE') as SEVERITY_ID,
        VWJDPSIS.BRAND_DESCRIPTION AS PRODUCT_NO,  
        substr(VWJDPSIS.ENGINEER_PART_ETA,3,28) AS ENGG_PART_ETA,
        substr(VWJDPSIS.ENGINEER_PART_ETA,1,2) ENGINEER_PART_ETA_FLAG,
        decode(PROBLEM_COUNT,NULL,0,ECCDPS.PROBLEM_COUNT) AS PROBLEM_COUNT,
        ECCDPS.DPS_ALERT_FLAG as DPS_ALERT_FLAG,
        Lower(ECCDPS.DPS_OWNER_ID) as DPS_OWNER,
        VWJDPSIS.REASON_CODE as REASON_CODE,  
        CASE WHEN  
                REASON_CODE LIKE ('02%')
        THEN
                'Y'
        ELSE  
                DPS_REPEAT_DISPATCH_FLAG END AS  DPS_REPEAT_DISPATCH_FLAG,
        DPS_ACK_FLAG AS DPS_ACK_FLAG,
        ECCPRD.fnGetCallAgeValue(SERVICE_ACC_DATE_TIME) AS CALL_AGE,  
        'Take' AS TAKE,  
        CASE WHEN  
                REASON_CODE LIKE ('01TA')
        THEN
                'Y'
        ELSE  
                'N' END AS  CLAIM_ALERT_FLAG,
        CASE WHEN
                REASON_CODE IN ( SELECT
                                INFO_VALUE
                                FROM ECCPRD.SYSTEM_INFO  
                                WHERE
                                UPPER(INFO_CATEGORY) = UPPER('ALERTTYPE')
                                AND UPPER(INFO_CODE) = UPPER('REPEAT'))  
        THEN
                'Y'
        ELSE
                'N' END AS REPEATDISPATCH_ALERT_FLAG,  
        CASE WHEN
                to_char(SEVERITY_ID) IN ( SELECT
                                        INFO_VALUE
                                        FROM ECCPRD.SYSTEM_INFO  
                                        WHERE UPPER(INFO_CATEGORY) = UPPER('ALERTTYPE')
                                        AND UPPER(INFO_CODE) = UPPER('SEVERITY'))  
        THEN
                'Y'
        ELSE
                'N' END AS SEVERITY_ALERT_FLAG,  
        VWJDPSIS.LOB_PRODUCT_DESCRIPTION AS DPS_TYPE_FLAG,  
        SERVICE_ACC_DATE_TIME,
        VWJDPSIS.DPS_VERSION_NUM ,
        VWJDPSIS.IS_TANDEM_CLIENT_UPDATE  
        FROM
        ECCPRD.JDPSIS_DPS_INFO_VIEW VWJDPSIS
                LEFT OUTER JOIN
        ECCPRD.DPS_INFO ECCDPS ON VWJDPSIS.DPS_NUM  =  ECCDPS.DPS_NUM
        WHERE  
        VWJDPSIS.DSP_CODE in
                ( SELECT
                INFO_CODE
                FROM
                ECCPRD.SYSTEM_INFO
                WHERE
                INFO_CATEGORY = 'DSPCODE')
        AND VWJDPSIS.DPS_TYPE in
                ( SELECT
                INFO_CODE
                FROM
                ECCPRD.SYSTEM_INFO
                WHERE
                INFO_CATEGORY = 'DPSTYPE'
                AND INFO_VALUE<>'NBD') AND
                (DPS_STATUS <> 'DONE'  
                AND DPS_STATUS <> 'CNL'
                AND DPS_STATUS <> 'DCNL'  
                AND DPS_STATUS <> 'CLO'
                AND DPS_STATUS <> 'DRCV'
                AND DPS_STATUS <> 'RCV'
                AND DPS_STATUS <> 'TWFA')
                AND VWJDPSIS.DPS_VERSION_NUM = (SELECT
                                                MAX(DPS_VERSION_NUM)
                                                from
                                                ECCPRD.JDPSIS_DPS_INFO_VIEW DPSIN
                                                WHERE
                                                DPSIN.DPS_NUM=VWJDPSIS.DPS_NUM)  
        UNION
        Select
        VWJDPSIS.DPS_NUM AS DPS_NUM,
        VWJDPSIS.DPS_TYPE as DPS_TYPE,
        VWJDPSIS.DPS_STATUS as DPS_STATUS,
        ECCPRD.fnGetRefCodeValue(VWJDPSIS.Call_TYPE,'CUSTOMERTYPE') as CUSTOMER_TYPE,
        VWJDPSIS.CUSTOMER_NAME as CUSTOMER_NAME,
        ECCPRD.fnGetRefCodeValue(VWJDPSIS.SEVERITY_ID,'SEVERITYCODE') as SEVERITY_ID,
        VWJDPSIS.BRAND_DESCRIPTION AS PRODUCT_NO,      
        substr(VWJDPSIS.ENGINEER_PART_ETA,3,28) AS ENGG_PART_ETA,
        DECODE(substr(VWJDPSIS.ENGINEER_PART_ETA,1,2),'','None',substr(VWJDPSIS.ENGINEER_PART_ETA,1,2))
        ENGINEER_PART_ETA_FLAG ,
        decode(PROBLEM_COUNT,NULL,0,ECCDPS.PROBLEM_COUNT) AS PROBLEM_COUNT,
        ECCDPS.DPS_ALERT_FLAG as DPS_ALERT_FLAG,
        ECCDPS.DPS_OWNER_ID as DPS_OWNER,
        ECCPRD.VWJDPSIS.REASON_CODE  as REASON_CODE,  
        CASE WHEN  
                REASON_CODE LIKE ('02%')
        THEN
                'Y'
        ELSE
                DPS_REPEAT_DISPATCH_FLAG END AS DPS_REPEAT_DISPATCH_FLAG,
        DPS_ACK_FLAG AS DPS_ACK_FLAG,
        ECCPRD.fnGetCallAgeValue(SERVICE_ACC_DATE_TIME) AS CALL_AGE,  
        'Take' AS TAKE,  
        CASE WHEN  
                REASON_CODE LIKE ('01TA')
        THEN
                'Y'
        ELSE  
                'N' END AS  CLAIM_ALERT_FLAG,
        CASE WHEN
                REASON_CODE IN ( SELECT
                                INFO_VALUE
                                FROM
                                ECCPRD.SYSTEM_INFO  
                                WHERE
                                UPPER(INFO_CATEGORY) = UPPER('ALERTTYPE')
                                AND UPPER(INFO_CODE) = UPPER('REPEAT'))  
        THEN
                'Y'
        ELSE
                'N' END AS REPEATDISPATCH_ALERT_FLAG,  
        CASE WHEN
                to_char(SEVERITY_ID) IN ( SELECT
                                        INFO_VALUE
                                        FROM
                                        ECCPRD.SYSTEM_INFO  
                                        WHERE
                                        UPPER(INFO_CATEGORY) = UPPER('ALERTTYPE') AND
                                        UPPER(INFO_CODE) = UPPER('SEVERITY'))  
        THEN
                'Y'
        ELSE
                'N' END AS SEVERITY_ALERT_FLAG,  
        VWJDPSIS.LOB_PRODUCT_DESCRIPTION AS DPS_TYPE_FLAG,  
        SERVICE_ACC_DATE_TIME,
        VWJDPSIS.DPS_VERSION_NUM,
        VWJDPSIS.IS_TANDEM_CLIENT_UPDATE  
        FROM
        ECCPRD.JDPSIS_DPS_INFO_VIEW VWJDPSIS
                LEFT OUTER JOIN
        ECCPRD.DPS_INFO ECCDPS ON VWJDPSIS.DPS_NUM  =  ECCDPS.DPS_NUM
        WHERE  
        VWJDPSIS.DSP_CODE in (SELECT
                                INFO_CODE
                                FROM
                                ECCPRD.SYSTEM_INFO
                                WHERE
                                INFO_CATEGORY = 'DSPCODE')
        AND VWJDPSIS.DPS_TYPE in (SELECT
                                INFO_CODE
                                FROM
                                ECCPRD.SYSTEM_INFO
                                WHERE
                                INFO_CATEGORY = 'DPSTYPE'
                                AND INFO_VALUE = 'NBD')
        AND (VWJDPSIS.CALL_TYPE IN(SELECT
                                INFO_CODE
                                FROM
                                ECCPRD.SYSTEM_INFO
                                WHERE  
                                info_CATEGORY='CUSTOMERTYPE'
                                AND INFO_VALUE IN ('G/K','G','K') )
        OR  
        VWJDPSIS.LOB_PRODUCT_DESCRIPTION IN ('EMC','PowerConnect')
        OR  
        VWJDPSIS.DPS_NUM IN (SELECT
                                dps_num  
                                FROM
                                ECCPRD.DPS_INFO
                                WHERE
                                dps_repeat_dispatch_flag ='Y'  )
        OR  
        REASON_CODE LIKE ('01TA')
        OR  
        REASON_CODE LIKE ('02%')
        OR  
        to_char(VWJDPSIS.SEVERITY_ID) IN ( SELECT
                                        INFO_value
                                        FROM
                                        ECCPRD.SYSTEM_INFO
                                        WHERE
                                        INFO_code='SEVERITY'
                                        AND
                                        info_CATEGORY='ALERTTYPE')
        OR  
        VWJDPSIS.DPS_NUM IN (SELECT
                                dps_num
                                FROM
                                ECCPRD.ALERT_DETAILS  
                                WHERE alert_code= 'OVER5H'
                                AND ALERT_ACTIVE_FLAG='Y'))
        AND (DPS_STATUS <> 'DONE'  
                AND DPS_STATUS <> 'CNL'
                AND DPS_STATUS <> 'DCNL'  
                AND DPS_STATUS <> 'CLO'
                AND DPS_STATUS <> 'DRCV'  
                AND DPS_STATUS <> 'RCV'
                AND DPS_STATUS <> 'TWFA')  
        AND VWJDPSIS.DPS_VERSION_NUM = (SELECT
                                        MAX(DPS_VERSION_NUM)
                                        from
                                        ECCPRD.JDPSIS_DPS_INFO_VIEW DPSIN
                                        WHERE
                                        DPSIN.DPS_NUM=VWJDPSIS.DPS_NUM) )
        ORDER BY DPS_NUM DESC
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[+][-]02.09.2005 at 02:11AM PST, ID: 13262291

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About this solution

Zone: Oracle Database
Tags: query, decode, optimizaiton, optimization
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Solution Provided By: morphman
Participating Experts: 4
Solution Grade: A
 
 
[+][-]02.09.2005 at 05:48AM PST, ID: 13263613

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[+][-]02.09.2005 at 12:21PM PST, ID: 13268674

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[+][-]02.09.2005 at 01:08PM PST, ID: 13269150

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[+][-]02.09.2005 at 09:42PM PST, ID: 13272456

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[+][-]06.26.2005 at 04:52AM PDT, ID: 14303291

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[+][-]06.30.2005 at 08:32AM PDT, ID: 14339227

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