Select query take long time

Hi All.
When i execute select query from View it takes about 00:00:45:12 sec to pull the data , but when i execute same query in some other system(different database with same table structure) it takes about 00:00:02:05 sec.
1)I have tried by dropped and recreated the index then i tried by exec dbms_stats.gather_table_stats procedure still no luck.
Please help me to understand the reason difference in response time
Thanks
sankar

did you run the EXPLAIN PLAN?

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  • Select query takes long time....

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  • SELECT statement takes long time

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  • Select statemnet takes long time

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  • Select Query Takes more time

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    Edited by: spur230 on Apr 1, 2009 10:28 AM
    Edited by: spur230 on Apr 1, 2009 10:30 AM

    Query just takes a second from toad It's possible that the query starts returning rows in a second, but that's not the time required for the entire query.

  • Query Takes Longer time

    SELECT CAL_EMPCALENDAR.START_DATE as main,
    bit_empname(CAL_EMPCALENDAR.EMPLOYEE_ID) || ' /' ||
    CAL_EMPCALENDAR.EMPLOYEE_ID as secondary,
    TO_DATE('1-4-2006', 'DD-MM-YYYY') as FROM_DATE,
    TO_DATE('30-4-2006', 'DD-MM-YYYY') as TO_DATE,
    bit_empname(CAL_EMPCALENDAR.EMPLOYEE_ID) || ' / ' ||
    CAL_EMPCALENDAR.EMPLOYEE_ID as name,
    CAL_EMPCALENDAR.START_DATE as sdate,
    CAL_EMPCALENDAR.OVERTIME_REASON as OTReason,
    CAL_EMPCALENDAR.POSTED_ON as POSTED_ON,
    TO_CHAR(CAL_EMPCALENDAR.START_DATE, 'Dy') as dayname,
    TAM_GET_ADJUSTED_IN(CAL_EMPCALENDAR.EMPCALENDAR_ID) as adj_in,
    TAM_GET_ADJUSTED_OUT(CAL_EMPCALENDAR.EMPCALENDAR_ID) as adj_out,
    CAL_EMPCALENDAR.SHIFT_ID AS SHIFT_ABBREV,
    CAL_EMPCALENDAR.LATE_IN,
    CAL_EMPCALENDAR.EARLY_OUT,
    CAL_EMPCALENDAR.UNDER_TIME,
    CAL_EMPCALENDAR.OVERTIME,
    TAM_GET_LEAVE_DESC(CAL_EMPCALENDAR.EMPCALENDAR_ID, 'ALL') Leave,
    CAL_EMPCALENDAR.EMPLOYEE_ID as empid,
    HRM_CURR_CAREER_V.DEPARTMENT_CODE as deptcode,
    BIT_CODEDESC(HRM_CURR_CAREER_V.DEPARTMENT_CODE) as deptname,
    (SELECT shift_id
    FROM CAL_GRPWORKDAY
    WHERE CAL_GRPWORKDAY.calgrp_id =
    (SELECT calgrp_id
    FROM CAL_CALASSIGNMENT
    WHERE employee_id = CAL_EMPCALENDAR.employee_id
    AND CAL_CALASSIGNMENT.START_DATE <=
    CAL_EMPCALENDAR.START_DATE
    AND (CAL_CALASSIGNMENT.END_DATE is null or
    CAL_CALASSIGNMENT.END_DATE >=
    CAL_EMPCALENDAR.START_DATE))
    AND CAL_GRPWORKDAY.start_date = CAL_EMPCALENDAR.start_date) AS shift_id,
    (SELECT max(entry_dt)
    FROM , LV_TXN txn, CAL_EMPDAILYEVENT cale
    WHERE status = 'Approved'
    AND LV_APPSTATUSHIST.application_id = txn.application_id
    AND cale.reference_id = txn.txn_id
    AND cale.empcalendar_id = CAL_EMPCALENDAR.empcalendar_id
    ) AS entry_dt,
    (SELECT ENTITLEMENT + ADJUST
    FROM TAM_ALLOWANCE
    WHERE (WF_STATUS = 'Pending' OR WF_STATUS = 'Approved' OR
    WF_STATUS = 'Verified' OR WF_STATUS is Null OR
    WF_STATUS = 'No Action')
    and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
    AND ITEM_ID = (SELECT ITEM_ID
    FROM TAM_CLAIM_FORMAT
    WHERE SEQUENCE = 1
    and BIZUNIT_ID like 'SG')) F1,
    --TAM_GET_ENT_AND_ADJUSTED(CAL_EMPCALENDAR.EMPCALENDAR_ID, 'SG', 1) F1,                            
    (SELECT ENTITLEMENT + ADJUST
    FROM TAM_ALLOWANCE
    WHERE (WF_STATUS = 'Pending' OR WF_STATUS = 'Approved' OR
    WF_STATUS = 'Verified' OR WF_STATUS is Null OR
    WF_STATUS = 'No Action')
    and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
    AND ITEM_ID = (SELECT ITEM_ID
    FROM TAM_CLAIM_FORMAT
    WHERE SEQUENCE = 2
    and bizunit_id like 'SG')) F2,
    (SELECT ENTITLEMENT + ADJUST
    FROM TAM_ALLOWANCE
    WHERE (WF_STATUS = 'Pending' OR WF_STATUS = 'Approved' OR
    WF_STATUS = 'Verified' OR WF_STATUS is Null OR
    WF_STATUS = 'No Action')
    and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
    AND ITEM_ID = (SELECT ITEM_ID
    FROM TAM_CLAIM_FORMAT
    WHERE SEQUENCE = 3
    and bizunit_id like 'SG')) F3,
    (SELECT ENTITLEMENT + ADJUST
    FROM TAM_ALLOWANCE
    WHERE (WF_STATUS = 'Pending' OR WF_STATUS = 'Approved' OR
    WF_STATUS = 'Verified' OR WF_STATUS is Null OR
    WF_STATUS = 'No Action')
    and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
    AND ITEM_ID = (SELECT ITEM_ID
    FROM TAM_CLAIM_FORMAT
    WHERE SEQUENCE = 4
    and bizunit_id like 'SG')) F4,
    (SELECT ENTITLEMENT + ADJUST
    FROM TAM_ALLOWANCE
    WHERE (WF_STATUS = 'Pending' OR WF_STATUS = 'Approved' OR
    WF_STATUS = 'Verified' OR WF_STATUS is Null OR
    WF_STATUS = 'No Action')
    and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
    AND ITEM_ID = (SELECT ITEM_ID
    FROM TAM_CLAIM_FORMAT
    WHERE SEQUENCE = 5
    and bizunit_id like 'SG')) F5
    From CAL_EMPCALENDAR, HRM_CURR_CAREER_V, CAL_SHIFT, HRM_EMPLOYEE
    Where CAL_SHIFT.SHIFT_ID(+) = CAL_EMPCALENDAR.ACTUAL_SHIFT_ID
    AND (CAL_EMPCALENDAR.WF_STATUS = 'Approved' Or
    CAL_EMPCALENDAR.WF_STATUS = 'No Action')
    AND CAL_EMPCALENDAR.EMPLOYEE_ID = HRM_EMPLOYEE.EMPLOYEE_ID
    --and CAL_EMPCALENDAR.START_DATE between TO_DATE('1-4-2006','DD-MM-YYYY') AND TO_DATE('31-4-2006','DD-MM-YYYY')
    AND CAL_EMPCALENDAR.START_DATE BETWEEN
    GREATEST(HRM_EMPLOYEE.COMMENCE_DATE,
    TO_DATE('1-4-2006', 'DD-MM-YYYY')) AND
    LEAST(TO_DATE('30-4-2006', 'DD-MM-YYYY'),
    NVL(HRM_EMPLOYEE.CESSATION_DATE,
    TO_DATE('30-4-2006', 'DD-MM-YYYY')))
    And CAL_EMPCALENDAR.EMPLOYEE_ID like 'SG' || '%'
    And CAL_EMPCALENDAR.EMPLOYEE_ID like 'SGTAM001'
    And CAL_EMPCALENDAR.EMPLOYEE_ID = HRM_CURR_CAREER_V.EMPLOYEE_ID
    -- AND HRM_CURR_CAREER_V.DEPARTMENT_CODE like 'DPHR'
    --AND HRM_EMPLOYEE.EMPLOYMENT_TYPE_CODE like '$P!{EmploymentType}'
    --$P!{ExceptionSQL}
    --$P!{iHRFilterClause}
    --order by $P!{OrderBy}
    order by main
    Hi all this query takes a very long time to run.
    On the explain plan the The table in bold letter is using full tablescan rest all go for index scanning.
    Table got Indexe on those CLOMUNS REFERREED
    Oracle version 9.2.0.6
    Message was edited by:
    Maran.E
    Message was edited by:
    Maran.E

    Maran,
    With tags and indentation it should be easiest to analyze at least for you :
    SELECT CAL_EMPCALENDAR.START_DATE as main,
           bit_empname(CAL_EMPCALENDAR.EMPLOYEE_ID) || ' /' || CAL_EMPCALENDAR.EMPLOYEE_ID as secondary,
           TO_DATE('1-4-2006', 'DD-MM-YYYY') as FROM_DATE,
           TO_DATE('30-4-2006', 'DD-MM-YYYY') as TO_DATE,
           bit_empname(CAL_EMPCALENDAR.EMPLOYEE_ID) || ' / ' || CAL_EMPCALENDAR.EMPLOYEE_ID as name,
           CAL_EMPCALENDAR.START_DATE as sdate,
           CAL_EMPCALENDAR.OVERTIME_REASON as OTReason,
           CAL_EMPCALENDAR.POSTED_ON as POSTED_ON,
           TO_CHAR(CAL_EMPCALENDAR.START_DATE, 'Dy') as dayname,
           TAM_GET_ADJUSTED_IN(CAL_EMPCALENDAR.EMPCALENDAR_ID) as adj_in,
           TAM_GET_ADJUSTED_OUT(CAL_EMPCALENDAR.EMPCALENDAR_ID) as adj_out,
           CAL_EMPCALENDAR.SHIFT_ID AS SHIFT_ABBREV,
           CAL_EMPCALENDAR.LATE_IN,
           CAL_EMPCALENDAR.EARLY_OUT,
           CAL_EMPCALENDAR.UNDER_TIME,
           CAL_EMPCALENDAR.OVERTIME,
           TAM_GET_LEAVE_DESC(CAL_EMPCALENDAR.EMPCALENDAR_ID, 'ALL') Leave,
           CAL_EMPCALENDAR.EMPLOYEE_ID as empid,
           HRM_CURR_CAREER_V.DEPARTMENT_CODE as deptcode,
           BIT_CODEDESC(HRM_CURR_CAREER_V.DEPARTMENT_CODE) as deptname,
           (SELECT shift_id
            FROM   CAL_GRPWORKDAY
            WHERE  CAL_GRPWORKDAY.calgrp_id = (SELECT calgrp_id
                                               FROM   CAL_CALASSIGNMENT
                                               WHERE employee_id = CAL_EMPCALENDAR.employee_id
                                               AND CAL_CALASSIGNMENT.START_DATE <= CAL_EMPCALENDAR.START_DATE
                                               AND (   CAL_CALASSIGNMENT.END_DATE is null
                                                    or CAL_CALASSIGNMENT.END_DATE >= CAL_EMPCALENDAR.START_DATE))
            AND CAL_GRPWORKDAY.start_date = CAL_EMPCALENDAR.start_date) AS shift_id,
           (SELECT max(entry_dt)
            FROM   LV_TXN txn, CAL_EMPDAILYEVENT cale
            WHERE status = 'Approved'
            AND LV_APPSTATUSHIST.application_id = txn.application_id
            AND cale.reference_id = txn.txn_id
            AND cale.empcalendar_id = CAL_EMPCALENDAR.empcalendar_id) AS entry_dt,
           (SELECT ENTITLEMENT + ADJUST
            FROM TAM_ALLOWANCE
            WHERE (   WF_STATUS = 'Pending'
                   OR WF_STATUS = 'Approved'
                   OR WF_STATUS = 'Verified'
                   OR WF_STATUS is Null
                   OR WF_STATUS = 'No Action')
            and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
            AND ITEM_ID = (SELECT ITEM_ID
                           FROM   TAM_CLAIM_FORMAT
                           WHERE  SEQUENCE = 1
                           and BIZUNIT_ID like 'SG')) F1,
           --TAM_GET_ENT_AND_ADJUSTED(CAL_EMPCALENDAR.EMPCALENDAR_ID, 'SG', 1) F1,
           (SELECT ENTITLEMENT + ADJUST
            FROM TAM_ALLOWANCE
            WHERE (   WF_STATUS = 'Pending'
                   OR WF_STATUS = 'Approved'
                   OR WF_STATUS = 'Verified'
                   OR WF_STATUS is Null
                   OR WF_STATUS = 'No Action')
            and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
            AND ITEM_ID = (SELECT ITEM_ID
                           FROM   TAM_CLAIM_FORMAT
                           WHERE  SEQUENCE = 2
                           and    bizunit_id like 'SG')) F2,
           (SELECT ENTITLEMENT + ADJUST
            FROM   TAM_ALLOWANCE
            WHERE (   WF_STATUS = 'Pending'
                   OR WF_STATUS = 'Approved'
                   OR WF_STATUS = 'Verified'
                   OR WF_STATUS is Null
                   OR WF_STATUS = 'No Action')
            and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
            AND ITEM_ID = (SELECT ITEM_ID
                           FROM   TAM_CLAIM_FORMAT
                           WHERE SEQUENCE = 3
                           and   bizunit_id like 'SG')) F3,
           (SELECT ENTITLEMENT + ADJUST
            FROM TAM_ALLOWANCE
            WHERE (   WF_STATUS = 'Pending'
                   OR WF_STATUS = 'Approved'
                   OR WF_STATUS = 'Verified'
                   OR WF_STATUS is Null
                   OR WF_STATUS = 'No Action')
            and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
            AND ITEM_ID = (SELECT ITEM_ID
                           FROM TAM_CLAIM_FORMAT
                           WHERE SEQUENCE = 4
                           and bizunit_id like 'SG')) F4,
           (SELECT ENTITLEMENT + ADJUST
            FROM TAM_ALLOWANCE
            WHERE (   WF_STATUS = 'Pending'
                   OR WF_STATUS = 'Approved'
                   OR WF_STATUS = 'Verified'
                   OR WF_STATUS is Null
                   OR WF_STATUS = 'No Action')
            and EMPCALENDAR_ID = CAL_EMPCALENDAR.EMPCALENDAR_ID
            AND ITEM_ID = (SELECT ITEM_ID
                           FROM TAM_CLAIM_FORMAT
                           WHERE SEQUENCE = 5
                           and bizunit_id like 'SG')) F5
    From CAL_EMPCALENDAR,
         HRM_CURR_CAREER_V,
         CAL_SHIFT,
         HRM_EMPLOYEE
    Where CAL_SHIFT.SHIFT_ID(+) = CAL_EMPCALENDAR.ACTUAL_SHIFT_ID
    AND   (   CAL_EMPCALENDAR.WF_STATUS = 'Approved'
           Or CAL_EMPCALENDAR.WF_STATUS = 'No Action')
    AND   CAL_EMPCALENDAR.EMPLOYEE_ID = HRM_EMPLOYEE.EMPLOYEE_ID
    --and CAL_EMPCALENDAR.START_DATE between TO_DATE('1-4-2006','DD-MM-YYYY') AND TO_DATE('31-4-2006','DD-MM-YYYY')
    AND   CAL_EMPCALENDAR.START_DATE BETWEEN GREATEST(HRM_EMPLOYEE.COMMENCE_DATE, TO_DATE('1-4-2006', 'DD-MM-YYYY'))
                                         AND LEAST(TO_DATE('30-4-2006', 'DD-MM-YYYY'), NVL(HRM_EMPLOYEE.CESSATION_DATE, TO_DATE('30-4-2006', 'DD-MM-YYYY')))
    And CAL_EMPCALENDAR.EMPLOYEE_ID like 'SG' || '%'
    And CAL_EMPCALENDAR.EMPLOYEE_ID like 'SGTAM001'
    And CAL_EMPCALENDAR.EMPLOYEE_ID = HRM_CURR_CAREER_V.EMPLOYEE_ID
    -- AND HRM_CURR_CAREER_V.DEPARTMENT_CODE like 'DPHR'
    --AND HRM_EMPLOYEE.EMPLOYMENT_TYPE_CODE like '$P!{EmploymentType}'
    --$P!{ExceptionSQL}
    --$P!{iHRFilterClause}
    --order by $P!{OrderBy}
    order by mainNicolas.

  • Query takes long time to load

    Hello experts,
    My users have queries on a MultiProvider. Today, the queries take a long time to load. When they want to put a filter on it, the selection pop-up takes a long time to show the possible selections.
    Is there any way to find out what causes the long wait time? And what can I do about it, to optimize it?
    Thanks in advance.

    Hi Erica,
    Please check load on system(how many users are logged in..?)
    Please check : [Checklist for Query Performance|http://sapbwneelam.blogspot.com/2007/10/checklist-for-query-performance.html] some tips for query performance.
    Hope it Helps
    Srini

  • Query takes long time from one machine but 1 sec from  machine

    I got a update query which is like a application patch which takes 1 sec from one machine.I need to apply that on the other machine where application is installed
    Both applications are same and connecting to the same DB server.The query ran from second machine takes so long time ....
    but i can update other thing from the secon machine.
    IS there anything to do with page size ,line size
    Urgent Please

    HI
    Everything is same except from the diff machine.
    Any client version issue because the script us so wide like 240 chars
    PLAN_TABLE_OUTPUT
    | Id | Operation | Name | Rows | Bytes | Cost |
    | 0 | UPDATE STATEMENT | | | | |
    | 1 | UPDATE | IDI_INTERFACE_MST | | | |
    | 2 | INDEX UNIQUE SCAN | PK_IDI_INTMST | | | |
    Note: rule based optimization, PLAN_TABLE' is old version
    10 rows selected.
    Message was edited by:
    Maran.E

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