Performance Issue [message #304415] |
Wed, 05 March 2008 01:53 |
ramanajv1968
Messages: 168 Registered: December 2005 Location: HYDERABAD
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Senior Member |
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Hi,
I am facing a Performance issue with the below query.It is taking too much time even though all the columns
in the where clause of the below query are indexed and the below query is dynamically generated through java.
TableNmae --------No_of_recd
agnt_dim ----415884
clear_daily_fact_vw --- 3298510
PRDCT_DIM ----8446
cov_dim ---3165302
CLNT_DIM ---2098316
SELECT *
FROM (SELECT A.PLCY_NBR,
A.CO_CD,
A.PLCY_STATUS_CD PLCY_STATUS_CD,
TO_CHAR(B.RISK_COMMNCD_DT, 'YYYY-MM-DD') RISK_COMMNCD_DT,
C.PLAN_TXT_DESC PRDCT_CATGRY_NAME,
DECODE(B.PYMT_FREQ_CD, 'A', 1, 'M', 12, 'Q', 4, 'S', 2, 0) * B.TOTL_PREM_INSMNT_AMT CRRNT_ANNUAL_PREM_AMT,
TO_CHAR(B.HOME_OFFC_RCVD_DT, 'YYYY-MM-DD') HOME_OFFC_RCVD_DT,
C.BASIC_RIDER_IND,
ROW_NUMBER() OVER(PARTITION BY B.PLCY_NBR, B.CO_CD ORDER BY C.BASIC_RIDER_IND, B.ELMNT_NBR DESC) SEQ_NBR
FROM CLEAR_DAILY_FACT_VW A,
COV_DIM B,
PRDCT_DIM C,
CLNT_DIM E
WHERE A.COV_DIM_ID = B.COV_DIM_ID
AND A.PRDCT_DIM_ID = C.PRDCT_DIM_ID
AND A.PLCY_STATUS_CD = 'A'
AND E.FIRST_NAME LIKE 'AL%'
AND A.CLNT_REF_NBR = E.CLNT_REF_NBR
AND (B.SVCNG_AGNT_NBR IN (SELECT AGNT_NBR FROM AGNT_DIM WHERE 1 = 1
AND AGNT_FIRST_NAME LIKE 'RE%')
)
)
WHERE SEQ_NBR = 1
ORDER BY PLCY_NBR,
CO_CD
Any suggestions please.
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Re: Performance Issue [message #304530 is a reply to message #304415] |
Wed, 05 March 2008 09:20 |
S.Rajaram
Messages: 1027 Registered: October 2006 Location: United Kingdom
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Senior Member |
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Quote: | It is taking too much time even though all the columns
in the where clause of the below query are indexed and the below query is dynamically generated through java
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Quantify your statement when you say it is taking too much time what's the time taken by your query to execute.
How about doing/answering the following questions/queries:
a) Posting the explain plan of your query
b) Are the stats updated
c) Going through the performance tuning sticky link in this forum
d) How many records you are expecting
Regards
Raj
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