Re: NT PERFMON Answer and question

From: Niall Litchfield <n-litchfield_at_audit-commission.gov.uk>
Date: Fri, 2 Feb 2001 09:12:35 -0000
Message-ID: <95dtm4$d1u$1@soap.pipex.net>

Oracle 8i writes to disk every 3 seconds - it is the DBWR process that does this.

Contrary to your response Perfmon *will* monitor disk io. This functionality is disabled by default. What the original poster needs to do is run a command prompt and type diskperf -y. This will enable the disk performance counters after a reboot.

HTH

--
Niall Litchfield
Oracle DBA
Audit Commission UK
"Harald Henkel" <Harald_at_Henkel.DAH.UUnet.DE> wrote in message
news:95cnmp$gph75$1_at_ID-56141.news.dfncis.de...


> Hi Scott.

>

> "Scott Watson" <swatson_at_datachest.com> schrieb im Newsbeitrag

> news:95chdb$561_at_NWNEWS.PCT.EDU...

> > I am trying to use NT perfmon to monitor what is going on at the OS

 level


> > and no matter what disk IO statistic I use it is always shows no IO (0

> > reads/writes).  (Even when I create a 400 Meg index)

> >

> > Can someone please let me know what I am doing wrong  NT4 SP6

>

> Nothing (PerfMon won't do the trick) -

> beside not using DiskMon or FileMon from www.sysinternals.com

>

> It (FileMon) showed me, that Oracle writes to its control files

 ctl1orcl.ora


> and ctl2orcl.ora every 3 seconds on one Oracle 8.1.6.3 installation - for

 no


> obvious reason (since the DB isn't doing much at the moment).

>

> Anybody has an idea what might be going on ?

> (it's WinNT 4 SP5)

>

> Can this be some installation / configuration problem ?

>

> It really looks like a configured interval. It's not "about" every 3

> seconds - it's exactly 3 seconds as far as I can see.

> Where would I configure this ?

>

> Ciao,

> Harald

>

>

>

Received on Fri Feb 02 2001 - 03:12:35 CST