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Home -> Community -> Mailing Lists -> Oracle-L -> RE: RE: Time to read 6000 (block size 2k) blocks
Jay
EXTENDEDATTRIBUTES E returns 1 row. I would guess that customerid will have better selectivity and would guess that as a number column. So, do you have an index on that column ? And Is that column declared as number (probably not, but I will ask anyway) ? If it is a string column how many distinct values does your statistics indicates assuming CBO for that column.
This would be a good time to turn on that damning 10053 event
too.
Thanks
Riyaj "Re-yas" Shamsudeen
Certified Oracle DBA
-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of
jaysingh1_at_optonline.net
Sent: Friday, August 06, 2004 10:15 AM
To: oracle-l_at_freelists.org
Subject: Re: RE: Time to read 6000 (block size 2k) blocks
Jurijs
Same execution plan. Nothing got changed.
> jaysingh1_at_optonline.net,
> Can you try:
>
> SELECT --+ ORDERED USE_NL(P, E)
> DISTINCT P.PROFILEDUSERID PROFILEDUSERID,
> SEARCH_LAST_NAME,
> SEARCH_FIRST_NAME
> FROM EXTENDEDATTRIBUTES E,
> PROFILEDUSER P
> WHERE P.PROFILEDUSERID = E.PROFILEDUSERID
> AND P.SEARCH_COMPANY_NAME LIKE 'ACME%' ESCAPE '/'
> AND E.CUSTOMERID = 'ABCDEFGH'
> AND HSBC_USER_CATEGORY IN ('VAL1','VAL2')
> AND ROWNUM < 150
> ORDER BY SEARCH_LAST_NAME,SEARCH_FIRST_NAME
>
>
> Jurijs
> +371 9268222 (+2 GMT)
> ============================================
> Thank you for teaching me. http://otn.oracle.com/ocm/jvelikanovs.html
>
>
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