Re: Controlling performance impact of multiple users

At 09:04 PM 7/14/2002, Curt Sampson wrote:
>On Thu, 11 Jul 2002, John Moore wrote:
>
> > The issue is how to prevent users from hogging the system, and especially
> > from slowing down the on-line users.
>
>Mixing OLTP and OLAP on one database server has never seemed like a good
>idea to me. Part of the problem with the idea of resource limitation is
>that if someone, say, starts a large update where it becomes apparent
>that this is going to use too many resources only part-way into it,
>you're kind of stuck. You have to either see it though, or pay the cost
>of the rollback, which may be just as expensive by that point.

I agree

>Thus, I recommend somehow replicating the data from the OLTP server
>to another server for the OLAP folks.

This is how we did it at a previous employer. I was hoping somebody has
some other trick, since we don't have any easy way to replicate the data!

John