Checkpoint & Redo ratio(High)

From: Seema Singh <oracledbam_at_hotmail.com>
Date: Thu, 17 Jan 2002 11:57:45 -0800
Message-ID: <F001.003F31AF.20020117112518@fatcity.com>

Hi
I checked my database and see redo ratio is high. I ran the folling query
select (req.value * 5000) / entries.value "Redo Ratio"

   from v$sysstat req, v$sysstat entries    where req.name = 'redo log space requests'    and entries.name = 'redo entries';
But the
background checkpoints completed and background checkpoints started are having diffrence 1.
When I do large insert and delete I receive message in alert log "Checkpoint not completed." but not regulary. My redo log file size is 20m.
oracle is running on 8.1.6 on unix.
LEt me know group suggestion.
Thanks
-Seema

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Author: Seema Singh
  INET: oracledbam_at_hotmail.com

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