Re: 5 instances = too much ???

Refuse to buy their product.

I guess that is easier if your client is Boeing or AT&T where you have more leverage. But it is still the correct answer. One version of Oracle per server and one Oracle instance per server. In the end it costs the company less or the same ... never more.

Daniel A. Morgan

Terry Dykstra wrote:

> So how do you deal with different application vendors who certify their
> applications only on specific versions of Oracle?
>
> --
> Terry Dykstra
> Canadian Forest Oil Ltd.
> "Daniel A. Morgan" <dmorgan_at_exesolutions.com> wrote in message
> news:3ADE7CBE.7F0552F7_at_exesolutions.com...
> > Is it possible? Yes.
> >
> > Is it sensible? IM(not so)HO No.
> >
> > Why create multiple instances? Why not just add some more tablespaces to
> > your existing instance and use different schema names?
> >
> > I see this kind of thing all the time and I see no justification for have
> > multiple copies of the data dictionary. Multiple copies of each and every
> > process. Multiple listeners. And on and on and on. It buys you absolutely
> > nothing but maintenance headaches.
> >
> > My rule of thumb is one instance per machine. And when the financial types
> > start their whining about the cost of hardware I remind them what it costs
> > when they have to pay me to come in on a weekend and clean up the mess not
> > to mention of value of lost productivity. The last CFO that didn't listen
 to
> > reason got a lesson in reality. When the machine crashed I phoned him and
> > told him it was his responsibility to notify the company's CEO. And that
 if
> > he didn't I would forward all of his emails refusing our request for more
> > servers because it would save the company money.
> >
> > Yes he notified the CEO. And yes we got our servers in less than a month.
> >
> > Daniel A. Morgan
> >
> >
> >
> >
> > Feldman Roger wrote:
> >
> > > Oracle People:
> > >
> > > 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 ?
> > >
> > > Thanks,
> > >
> > > Roger
> >
Received on Thu Apr 19 2001 - 23:53:48 CDT