Re: What is the best way to estimate capacity?
- From: goran bogdanovic <goran00@xxxxxxxxx>
- To: martin.a.berger@xxxxxxxxx, nupendra@xxxxxxxxxxx
- Date: Sun, 29 Jan 2012 00:01:49 +0100
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$sysstat
hth,
goran
On Mon, Oct 17, 2011 at 11:11 PM, Martin Berger
<martin.a.berger@xxxxxxxxx>wrote:
> Upendra,
>
> you can check for "CPU Time" events in AWR and even in statspack.
> These data might be just imprecise, but at least it's a starting
> point. In recent versions you can also use V$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@xxxxxxxxxxx> 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
> >
> > --
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>
>
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