RE: Checkpoint Duration

From: Gogala, Mladen <MGogala_at_oxhp.com>
Date: Fri, 09 Nov 2001 14:27:22 -0800
Message-ID: <F001.003C1686.20011109141047@fatcity.com>

Check v$system_event to see what are the most waited for things in your database.
You can also check v$session_wait for the wait events in sessions coresponding to
CKPT, DBW, LGW & SMON. Find those events in Oracle reference (available online)
and see if those guys are waiting for anything special. Pray.

-----Original Message-----

Sent: Friday, November 09, 2001 2:50 PM
To: Multiple recipients of list ORACLE-L

I have LOG_CHECKPOINTS_TO_ALERT set in my init.ora file and according to my alert log they are generally taking about 30 minutes to complete, sometimes only a couple minutes. Does that sound right?

The database is about 20G and doesn't have much transaction activity. It's a development database and export/import is run several times during the day. The DB is RAID-5 but the I/O wait is usually very low.

Any feedback/suggestions are appreciated. Thanks!
-w

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Author: Walter K
  INET: alden14004_at_yahoo.com

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Author: Gogala, Mladen
  INET: MGogala_at_oxhp.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: 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 Fri Nov 09 2001 - 16:27:22 CST