Re: 5 instances = too much ???

You are correct from my standpoint. I don't know of any technical limits. But when it comes to sanity and productivity ... I think there are limits. (Unless you are a contractor billing by the hour in which case you may not care)

Daniel A. Morgan

Joe Kazimierczyk wrote:

> You make some good points, but I'm not sure if the original
> poster was asking about technical limits or administrative
> issues. I don't think there are any technical limits to
> how many instances a box can support other than the usual
> capacity issues. From the administrative side, there are
> pros and cons. It depends on the criticality of the
> applications, the money they can spend on hardware, and the
> staff available to support the hardware and software. Here,
> we have apps where 1 instance per box is the right answer,
> some apps where many instances per box is perfectly
> acceptable.
>
> "Daniel A. Morgan" wrote:
> >
> > I understand. But when the server goes down. All five instances go down. Which
> > can put a company, or a department, out of business for hours or days.
> >
> > If your company grosses $40 million per year you lose the cost of a $100,000
> > server every 24 hours you are out of business. I doubt there are too many
> > companies using Oracle on $100,000 servers that don't make that much money
> > annually. Tell your CFO to do the math.
> >
> > Daniel A. Morgan
> >
> > Joe Kazimierczyk wrote:
> >
> > > It's impossible to give a rule of thumb on this. It all
> > > depends on the resources consumed by your instances vs what
> > > your hardware can handle. 5 instances with 2Gb memory
> > > sounds reasonable if your instances are not big hitters (I
> > > don't know what 'rational' is - sorry).
> > >
> > > > I've never had a machine with more than 3 instances. Now we're thinking
> > > > of going from 3 - 5 instances on a machine that has 2Gig memory. None of
> > > > the databases are too big- mostly support for apps like rational.
> > > >
> > > > So- when do you hit the limit for instances ? Is there a rule of thumb ?
> > > >
  Received on Sat Apr 21 2001 - 01:57:17 CDT