Re: How to use profiles??

On Mon, Apr 15, 2002 at 06:08:21AM -0800, Daiminger, Helmut wrote:
> Hi!
>
> We are experiencing performance problems on one of our production boxes,
> because some sessions are using up all the resources. All the users connect
> to the db through an application server using the same database user (approx
> 30 simultaneous connections).
>
> I was thinking about using profiles to limit the amount of resources a
> session can use. But I am pretty unsure to what values I should set the
> single criterias. The db is running on a Sun server, 4 CPUs, 4 GB of RAM and
> a Raid 0+1 disk array.

Something is rotten in Denmark. 30 sessions are killing a 4 processor, 4GB ram system.... I have 50 sessions on an old 1 cpu 333mHz machine built back when DEC was a company. You have some serious tuning issues. Limiting per session resources seems like putting your thumb in the broken dike (more Northern Europe humor..)

>
> What would be reasonable ballpark numbers to set for
>
> cpu_per_session
> cpu_per_call
> logical_reads_per_session
> logical_reads_per_call
>
> What would happen if cpu_per_session is set to 500 (i.e. 5 seconds) and the
> session used up all that CPU time? Would the session error out then?
>
> This is 8.1.7 on Sun Solaris.
>
> Thanks,
> Helmut
>

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Ray Stell   stellr_at_vt.edu     (540) 231-4109     KE4TJC    28^D
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