Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> Is buffer gets same as logical reads?

Is buffer gets same as logical reads?

From: Johnson Poovathummoottil <joni_65_at_YAHOO.COM>
Date: Tue, 20 Aug 2002 13:13:27 -0800
Message-ID: <F001.004BA6C3.20020820131327@fatcity.com>


Hi all,

Statspack report for a query is the following

Statspack report CCMP 8-Aug.

  Buffer Gets Executions Gets per Exec % Total Hash Value
--------------- ------------ -------------- -------


      2,396,079 61 39,280.0 16.6 2618625321
SELECT
PLE.IDN_ENTITY_LEGAL_PROVR,TPLE.NAM_BUSNS,TPLE.NAM_FIRST ,TPLE.NAM_MI,TPLE.NAM_LAST,TPLE.NAM_SUFFIX,TPLE.NBR_PHONE,TPLE.N I did an explain plan for the same and the logical blocks read count is 272. I do not understand how the Buffer Gets in 61 executions can be 2.3 million. My understanding is that buffer gets is the same as logical block reads.

Any ideas why this is reported this way? Thanks in advance.



Do You Yahoo!?
HotJobs - Search Thousands of New Jobs
http://www.hotjobs.com
--

Please see the official ORACLE-L FAQ: http://www.orafaq.com
--

Author: Johnson Poovathummoottil
  INET: joni_65_at_yahoo.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 Tue Aug 20 2002 - 16:13:27 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US