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Re: Database Performance Metrics - What to use?

From: Jim Kennedy <kennedy-down_with_spammers_at_attbi.com>
Date: Fri, 14 Mar 2003 02:08:05 GMT
Message-ID: <9Qaca.85282$sf5.57186@rwcrnsc52.ops.asp.att.net>


Niall,
That's why I put it in there. <grin>
Jim

--
Replace part of the email address: kennedy-down_with_spammers_at_attbi.com
with family.  Remove the negative part, keep the minus sign.  You can figure
it out.
"Niall Litchfield" <n-litchfield_at_audit-commission.gov.uk> wrote in message
news:3e70b37f$0$21982$ed9e5944_at_reading.news.pipex.net...

> "Jim Kennedy" <kennedy-down_with_spammers_at_attbi.com> wrote in message
> news:EM1ca.67048$F1.2859_at_sccrnsc04...
> > One way is to have a baseline of measurements for each DB at a time when
> > performance is acceptable and then compare against a base line. (eg % of
> > sorts to disk is <1% for oltp, but for DW it is 30% and be concerned
when
> > things deviate from norm sorts to disk for oltp >3% or some such thing.)
> > On the other hand, if you just want to look good you could just report
> > statistics in a vacumm eg buffer cache hit ratio.
>
> This is a particularly good one, since you can generate whatever hit ratio
> you require to give the precise impression that you want.
>
> What I have been looking at is
>
> user commits/sec - labelled "Transaction Rate" as it gives an indication
of
> busy times
> and *Database* Response time, though I'm not exactly sure how to measure
> this in a way I feel that I can backup.
> As Tanel says Application Response time would be the better measurement,
but
> in the absence of control of the source code for the app that becomes
> somewhat tricky.
>
>
> --
> Niall Litchfield
> Oracle DBA
> Audit Commission UK
>
>
Received on Thu Mar 13 2003 - 20:08:05 CST

Original text of this message

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