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Home -> Community -> Mailing Lists -> Oracle-L -> RE: query help.
Are you representing the Republican Party or the Democrats? That could determine which of us would be willing to answer your question 8-)
No, really. Tuning a query is not something we can do just by looking a the query in the absence of any other information (although, once in a long while that does work). You probably should start by looking at an explain plan of the query and go from there. Maybe you are missing a critical index. Maybe you don't have table statistics. Are you using parallel processing? Maybe you are simply cranking through a huge volume of data and it's just gonna take eight hours. Maybe you need a bigger, faster machine. Certainly, you need to go out and buy a good book on Oracle Tuning if you haven't already and if you intend to remain in this field.
Kevin Kennedy
First Point Energy Corporation
If you take RAC out of Oracle you get OLE! What can this mean?
-----Original Message-----
Sent: Thursday, August 22, 2002 10:09 AM
To: Multiple recipients of list ORACLE-L
I am a new oracle pl/sql developer. This is a very expensive query and it takes eight hours to produce a report. I just need some validation from guru's.
>Hello,
>
>Did I miss portion of this email ?
>what help is needed for this query ? (tuning, explanation ....???)
>
>Thanks,
>Kavi
>
>cw wrote:
>
>> Hey list Guru, Can anyone help me with this query? Many thanks,
>>
>> SELECT
>> A.COUNTY_CODE,
>> C.COUNTY_NAME,
>> lpad(B.PRECINCT,4,' '),
>> count(*),
>> sum(DECODE(0,floor((months_between(sysdate,
>> A.DOB)-(18*12))/(1*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> A.DOB)-(19*12))/(11*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> A.DOB)-(30*12))/(10*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> A.DOB)-(40*12))/(10*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> A.DOB)-(50*12))/(10*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> A.DOB)-(60*12))/(5*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> A.DOB)-(65*12))/(10*99)),1,0)),
>> sum(decode(A.DOB, NULL, 1, 0))
>> FROM ONLINE_VOTERS A, ADDRESS_INDEX B, COUNTIES C
>> WHERE A.COUNTY_CODE = B.COUNTY_CODE
>> AND A.ADDRESS_ID = B.ADDRESS_ID
>> AND A.COUNTY_CODE = C.COUNTY_CODE
>> AND A.STATUS IN ('V','S')
>> GROUP BY A.COUNTY_CODE, C.COUNTY_NAME, lpad(B.PRECINCT,4,' ')
>> UNION ALL
>> SELECT
>> D.COUNTY_CODE,
>> C2.COUNTY_NAME,
>> lpad(D.PRECINCT,4,' '),
>> count(*),
>> sum(DECODE(0,floor((months_between(sysdate,
>> D.DOB)-(18*12))/(1*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> D.DOB)-(19*12))/(11*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> D.DOB)-(30*12))/(10*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> D.DOB)-(40*12))/(10*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> D.DOB)-(50*12))/(10*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> D.DOB)-(60*12))/(5*12)),1,0)),
>> sum(DECODE(0,floor((months_between(sysdate,
>> D.DOB)-(65*12))/(10*99)),1,0)),
>> sum(decode(D.DOB, NULL, 1, 0))
>> FROM OFFLINE_VOTERS D, COUNTIES C2
>> WHERE D.COUNTY_CODE = C2.COUNTY_CODE
>> AND D.STATUS IN ('V','S')
>> GROUP BY D.COUNTY_CODE, C2.COUNTY_NAME, lpad(D.PRECINCT,4,' ');
>>
>> _____________________________________________
>> Free email with personality! Over 200 domains!
>> http://www.MyOwnEmail.com
>>
>> --
>> Please see the official ORACLE-L FAQ: http://www.orafaq.com
>> --
>> Author: cw
>> INET: cw_at_netlimit.com
>>
>> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
>> San Diego, California -- Public Internet access / Mailing Lists
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>
>
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: cw INET: cw_at_netlimit.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: kkennedy INET: kkennedy_at_firstpoint.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Thu Aug 22 2002 - 13:22:19 CDT
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