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

Home -> Community -> Mailing Lists -> Oracle-L -> Re: Redolog size question?

Re: Redolog size question?

From: Alexandre Gorbatchev <alexandre.gorbatchev_at_avermann.de>
Date: Tue, 06 Aug 2002 23:28:20 -0800
Message-ID: <F001.004AD321.20020806232820@fatcity.com>


RE: Redolog size question?Hi,
I guess the question was about absolute minimum for redo logs. Indeed, I'm just curious what is the theoretic absolute minimum for redo log size if any. few blocks? "Metablank" doc mentioned below gives sizing strategy. But there is one interesting sentence:

The LGWR is responsible for recording checkpoints in the datafile headers.

I thought that DBWRs are the only processes that make writes to the datafiles, so my understanding was that LGWR kicks DBWRs to refresh headers of datafiles and waits until DBWRs finish. Question: Do LGWR and CKPT change headers directly or request DBWRs to make it?

Alexandre

>
> What is the minimum size for redolog files
>

  See Metalink doc id 1038851.6 for a good reference on this subject.

  Dan Straub
  McKesson Information Solutions
  541-681-8278
  4403'N 12305'W (or thereabouts)
  Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Alexandre Gorbatchev
  INET: alexandre.gorbatchev_at_avermann.de

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 Wed Aug 07 2002 - 02:28:20 CDT

Original text of this message

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