Oracle-L: Re:How to use profiles??

From: <dgoulet_at_vicr.com>
Date: Mon, 15 Apr 2002 06:38:27 -0800
Message-ID: <F001.004445C7.20020415063827@fatcity.com>

Helmut,

This thing with app servers and everyone ending up on the DB as a single user (like PeopleSoft likes it) is one BIG pain in the &^%. Basically your stuck with not being to limit anything. Reason is that you cannot predict what jobs/sessions should have the longer vs. shorter limits. Setting any one of these will cause the offending session to abort. OH, BTW: there's a bug in 8.1.7.0.0 (BUG # 2085332) where you set the CPU_PER_CALL and your user gets an ORA-2394 vs. an ORA-2393 when they exceed the per call CPU utilization. It's supposedly fixed in 9.2.

OH, don't forget for any profile limits to work you need to set RESOURCE_LIMIT=TRUE in init.ora.

Dick Goulet

____________________Reply Separator____________________
Author: "Daiminger; Helmut" <Helmut.Daiminger_at_KirchGruppe.de>
Date:       4/15/2002 6:08 AM

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.

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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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.

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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Received on Mon Apr 15 2002 - 09:38:27 CDT