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Re: Redo Logs Problem

From: M Rafiq <rafiq9857_at_hotmail.com>
Date: Fri, 01 Aug 2003 08:14:24 -0800
Message-ID: <F001.005C8419.20030801081424@fatcity.com>


He should monitor v$session and v$sqlarea for all processes with status = 'ACTIVE' and track those DML which are resulting so much redolog specially when they are generating lot of redologs.

HTH,
Regards
Rafiq

Reply-To: ORACLE-L_at_fatcity.com
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Date: Fri, 01 Aug 2003 06:34:28 -0800

Hi!

Which version of DB?

Do you allow end users into database?
Maybe someone is doing massive DML?
Maybe your temporary tablespaces are dictionary managed and in logging mode - some user has forgot few where clauses in SQL and is doing huge sorting/joining?

You should check redo size statistic from v$session and find which one generates the most redo.

If you are monitoring only the number of archives, then you should check the size of them as well, for example in 9i you can have archive_lag_target parameter which can do logswitches before logs are full, thus increasing the number of archives, however the amount in bytes remains the same.

Tanel.

   Hi Listers,

   One of my remote Clients is facing a problem with Redo Logs. The Redo Logs and the Archive logs in turn have suddenly started to generate at an alarming Rate. This has suddenly started from the last 1 week without any changes to Database Configuration or any other system settings (as per client).

   Can anyone please help me and let me know all the reasons that could be responsible for this behavior. Any Help from u will be appreciated.

   Regards

   Munish Bajaj




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Author: M Rafiq
  INET: rafiq9857_at_hotmail.com

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