Re: How accurate is ADDM?
- From: "Syed Jaffar Hussain" <sjaffarhussain@xxxxxxxxx>
- To: David.Best@xxxxxxxxxx
- Date: Wed, 5 Dec 2007 06:48:07 +0300
We use ADDM report as a quick starting point to investigate the database
issues instead of taking the awr reports, analyzing them to understand the
problems.
Regards,
jaffar
On 12/4/07, Best, David <David.Best@xxxxxxxxxx> wrote:
>
>
> Hey all,
>
> How accurate is ADDM? Today we had a severe performance issue with
> one our of databases. The ADDM recommendation for that period put the
> most weight on the following:
>
> ---[ADDM Snip]---
> Action Investigate the possibility of improving the performance of I/O
> to the online redo log files.
>
> Rationale The average size of writes to the online redo log files was
> 932 K and the average time per write was 3020 milliseconds.
> ---[ADDM Snip]---
>
>
> The problem is, our storage team doesn't see the same level of
> degredation. Any suggestions?
>
> tnx
> --
> //www.freelists.org/webpage/oracle-l
>
>
>
--
Best Regards,
Syed Jaffar Hussain
Oracle ACE
8i,9i & 10g OCP DBA
http://jaffardba.blogspot.com/
http://apex.oracle.com/pls/otn/f?p=19297:4:1579866181463918::NO:4:P4_ID:126
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