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RE: Recommended number of redo log switches per hour

From: Khedr, Waleed <Waleed.Khedr_at_FMR.COM>
Date: Thu, 14 Mar 2002 07:03:31 -0800
Message-ID: <F001.00429246.20020314070331@fatcity.com>


In my opinion not less than 5-10 minutes in very busy times.

-----Original Message-----
Sent: Thursday, March 14, 2002 8:19 AM
To: Multiple recipients of list ORACLE-L

An Oracle Support technician recommended that I try to aim for three log switches per hour, during busy times.

According to the throughput I got yesterday between 3 and 4 o'clock PM, my redo log files would each have to be 1G in size.

That seems much too large to me, and I am not even sure it is possible to create redo log files that size. Under Oracle 7.3. the largest I could create on Tru64 UNIX 4.0g was 40M redo log files.

Is this another "rule of thumb" that should go down the drain?

Regards,
Patrice Boivin
Systems Analyst (Oracle Certified DBA)

Systems Admin & Operations | Admin. et Exploit. des systèmes
Technology Services        | Services technologiques
Informatics Branch         | Direction de l'informatique 
Maritimes Region, DFO      | Région des Maritimes, MPO

E-Mail: boivinp_at_mar.dfo-mpo.gc.ca
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Author: Boivin, Patrice J
  INET: BoivinP_at_mar.dfo-mpo.gc.ca

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Author: Khedr, Waleed
  INET: Waleed.Khedr_at_FMR.COM
Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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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 Mar 14 2002 - 09:03:31 CST

Original text of this message

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