Re: RE: Time to read 6000 (block size 2k) blocks

From: <J.Velikanovs_at_alise.lv>
Date: Fri, 6 Aug 2004 18:12:50 +0300
Message-ID: <OF9B976873.32C8FC68-ONC2256EE8.00534A1A-C2256EE8.005454EA@alise.lv>

Rows Row Source Operation

-------  ---------------------------------------------------
      1  SORT UNIQUE 
      1   COUNT STOPKEY 
      1    NESTED LOOPS 
   4766     TABLE ACCESS BY INDEX ROWID PROFILEDUSER (it has 450,000 rows)
   4767      INDEX RANGE SCAN (PROFILEDUSER_IX03)
      1     TABLE ACCESS BY INDEX ROWID EXTENDEDATTRIBUTES (it has 15,000 
rows)
   9530      INDEX UNIQUE SCAN (ATTRIBUTES_PK)

The idea is: to start NL with EXTENDEDATTRIBUTES table. Bacause in SQL you have E.CUSTOMERID = 'ABCDEFGH', and this seems ID value, which will return 1 row, instead 4766 loops thought PROFILEDUSER.

Try to get EXTENDEDATTRIBUTES as driven table. Or I am wrong ?

Jurijs
+371 9268222 (+2 GMT)

Thank you for teaching me.
http://otn.oracle.com/ocm/jvelikanovs.html

jaysingh1_at_optonline.net
Sent by: oracle-l-bounce_at_freelists.org
06.08.2004 18:14
Please respond to oracle-l

        To:     oracle-l_at_freelists.org
        cc: 
        Subject:        Re: RE: Time to read 6000 (block size 2k) blocks

Jurijs

Same execution plan. Nothing got changed.

Original Message ----- From: J.Velikanovs_at_alise.lv Date: Friday, August 6, 2004 11:02 am Subject: Re: RE: Time to read 6000 (block size 2k) blocks

> 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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Received on Fri Aug 06 2004 - 10:16:55 CDT