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 220.127.116.11 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 > > > -- http://www.freelists.org/webpage/oracle-l