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Re: query performance mystery

From: Lou Fiorino <lfiorino_at_louserium.com>
Date: 11 Jan 2003 18:34:55 -0800
Message-ID: <ecc5e35e.0301111834.30f97669@posting.google.com>


The box is on a private isolated network with no antivirus software installed on any of the three boxes... but thanks anyway

"Jim Kennedy" <kennedy-down_with_spammers_at_attbi.com> wrote in message news:<SYST9.11393$Dn.1177_at_sccrnsc03>...
> Does machine 3 have virus protection? (maybe 3 doesn't and one and 2 do)
> 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.
> "Lou Fiorino" <lfiorino_at_louserium.com> wrote in message
> news:ecc5e35e.0301110305.57a0ae0c_at_posting.google.com...
> > It's either gremlins or I'm completely stumped.
> >
> > Running Oracle 9i release 2 on Win2k and have identical setups running
> > on three separate machines.
> >
> > machine 1
> > - dual 900mhz cpus 4 gigs ram
> > - cpu maxes at 40%
> > - query runs in 7 seconds
> >
> > machine 2
> > - single 900mhz cpus 2 gigs ram
> > - cpu maxes at 40%
> > - query runs in 10 seconds
> >
> > machine 3
> > - dual 900mhz cpus 3 gigs ram
> > - cpu maxes at 8%
> > - query runs in 70 seconds!!!
> >
> >
> > The profiles are set with no CPU, memory, or other restrictions for
> > the user on all instances across machines. I've even gone so far as to
> > transfer all the instance related os level files from machine 1 to
> > machine 3 (DBFs, Control files, etc) and gotten the same results.
> > Results are the same after running stats. Same OS services are
> > running with the same memory utilization. We never exceed 1 GIG of
> > memory usage for the ENTIRE system. VM thrashing is not occurring.
> >
> > Now somebody explain this to me like I'm a four year old. We're not
> > I/O bound so why does it seem like the CPU utilization is being
> > throttled? Shouldn't we be using the same % of CPU on the 3rd box as
> > the other two? If there's no cpu usage limitation for the user on
> > this database instance, is there a global setting that limits cpu
> > utilization for Oracle on the box itself? If there is I can't seem to
> > find it.
> >
> > My forehead is getting FLATTENED from slamming my head against the
> > wall on this one.
> >
> > Any clues????
Received on Sat Jan 11 2003 - 20:34:55 CST

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