Re: What is the best way to estimate capacity?

From: goran bogdanovic <goran00_at_gmail.com>
Date: Sun, 29 Jan 2012 00:01:49 +0100
Message-ID: <CAGyPXK4OEnD-zP=id=z0ZdWXCNbsdWvJRvvrPvuVgyC9uzsL5Q_at_mail.gmail.com>

in addition to what Martin already said, further possibility is to use v$sys_time_model or v$active_session_history to get DB CPU time for 10g databases ... for 8i you can use v$sysstat hth,
goran

On Mon, Oct 17, 2011 at 11:11 PM, Martin Berger <martin.a.berger_at_gmail.com>wrote:

> Upendra,
>
> you can check for "CPU Time" events in AWR and even in statspack.
> These data might be just imprecise, but at least it's a starting
> point. In recent versions you can also use V$SYSMETRIC_HISTORY or
> DBA_HIST_SYSMETRIC_SUMMARY to compare the number of "CPU Time" to the
> system load.
>
> hopefully this is a start of some breadcrumbs for you,
> Martin
>
> On Thu, Oct 13, 2011 at 23:12, Upendra N <nupendra_at_hotmail.com> wrote:
> >
> >
> >
> >
> > Hello all,
> > If a server is running multiple databases (ranges from 8.1.7.4 to 10.2).
> Is there a way to estimate the CPU capacity that are used by each of the
> database which will relate to the OS system load?
> > We do have AWR (tuning/diagnostic packs) for 10.2 databases, but we may
> have to rely on other methods for 8i databases.
> >
> > I'm trying to arrive at something like this:
> > Database-1 = 30%
> > Database-2 = 20%
> > Database-3 = 10%
> > Database-4 = 40%
> >
> > The hardware platform is Sun Sparc Solaris 9.
> >
> > I'm trying to relocate a few databases to newer platform. With the move
> I'd like to recoup some of the Oracle licenses by reducing CPU capacity
> (turning the CPUs off or physically pull them out ) on the legacy servers.
> > Your suggestions are greatly appreciated.
> >
> > Thanks
> > -Upendra
> >
> > --
> > http://www.freelists.org/webpage/oracle-l
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>

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Received on Sat Jan 28 2012 - 17:01:49 CST