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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Re[2]: controlling CPU usage through Oracle
I don't think Resource Manager is going to do the trick here (I just read about it over the last week while preparing for OCP exam 4). Resource Manager would work great for a single database but Ed is trying to divvy up resources between 5 databases.
I don't have any good solution. I suppose if everything running on this one database was less important than anything on the other 4 databases, you could renice the one database. I think that would be ok provided all components of the one database were at the same nice level.
Kevin Kennedy
First Point Energy Corporation
If you take RAC out of Oracle you get OLE! What can this mean?
-----Original Message-----
Sent: Wednesday, August 28, 2002 9:52 AM
To: Multiple recipients of list ORACLE-L
Ed,
The only way your going to do this is through Oracle Resource Manager. You'll need an 8.1.x Enterprise database. Then you can setup your resource plans and groups to manage who gets how much CPU at a time. Any of the operating level tools out there cannot get down to the level of granularity your asking for since all of the activity happens within Oracle. All those tools can do is control the amount of CPU that Oracle gets which has a global effect that hampers all users of the database.
Dick Goulet
____________________Reply Separator____________________ Author: "Ed Lewis" <eglewis_at_hotmail.com> Date: 8/28/2002 5:13 AM
Raj,
Thanks for your input.
>From what I understand with profiles,
the session will be terminated once a
threshold is reached.
In this particular case, I cannot
terminate the session. I need to be able
to control the CPU usage of a session, without
ending it.
If this cannot be done within Oracle, then maybe it can be accomplished through the OS.
thanks.
ed
You could use profiles to control CPU usage as well, more info is in manuals.
Raj
Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN Inc.
QOTD: Any clod can have facts, but having an opinion is an art!
-----Original Message-----
From: Ed Lewis [mailto:eglewis_at_hotmail.com]
Sent: Tuesday, August 27, 2002 4:18 PM
To: Multiple recipients of list ORACLE-L
Subject: controlling CPU usage through Oracle
Hi,
I'm looking for a way to control CPU usage of particular queries on a database.
After exploring, and implementing ways of optimizing the code, these queries can run anywhere from 45 seconds to 2 minutes.
This database is 1 of 5 on this box. So, although it's important to build effective queries, it's also important in this environment that these queries do not impact the other 4 databases.
What I want to do is place a limit on CPU usage without terminating the query. I've looked at profiles with the "cpu_per_call" and "cpu_per_session" settings. I have never used profiles, but from what I understand, these will kill the session once they reach a threshold.
I'm also looking at database resource management. This may be more appropriate for this situation.
Has anyone used this, and if so what are you experiences ? Would you recommend it ?
Would the only way to control CPU usage on this box, be through the operating system ?
I welcome any suggestions. I appreciate your time.
The environment is Oracle 8.1.7.2, AIX 4.3.3.
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<DIV><FONT face=Arial size=2>Raj,</FONT></DIV>
<DIV><FONT face=Arial size=2> Thanks for your
input.</FONT></DIV>
<DIV><FONT face=Arial size=2>From what I understand with profiles, </FONT></DIV>
<DIV><FONT face=Arial size=2>the session will be terminated</FONT><FONT
face=Arial size=2> once a </FONT></DIV>
title=ORACLE-L_at_fatcity.com>Multiple recipients of list ORACLE-L</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, August 27, 2002 4:48
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: controlling CPU usage
through Oracle</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=977503919-27082002><FONT color=#0000ff face="Courier New"
size=2>You could use profiles to control CPU usage as well, more info is in
manuals.</FONT></SPAN></DIV>
<DIV><SPAN class=977503919-27082002><FONT color=#0000ff face="Courier New"
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=977503919-27082002><FONT color=#0000ff face="Courier New"
size=2>Raj</FONT></SPAN></DIV>
<DIV><SPAN class=977503919-27082002></SPAN><FONT face="Courier New"
size=2>______________________________________________________</FONT></DIV><P align=left><FONT face="Courier New" size=2>Rajendra Jamadagni MIS, ESPN Inc.</FONT></P>
<P align=left><FONT face="Courier New" size=2>Rajendra dot Jamadagni at ESPN dot com</FONT></P> <P align=left><FONT face="Courier New" size=2>Any opinion expressed here ispersonal and doesn't reflect that of ESPN Inc. </FONT></P> <P align=left><FONT face="Courier New" size=2>QOTD: Any clod can have facts, but having an</FONT> <FONT face="Courier New" size=2>opinion is an</FONT> <FONT face="Courier New" size=2>art!</FONT></P> <BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px"> <DIV align=left class=OutlookMessageHeader dir=ltr><FONT face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> Ed Lewis [mailto:eglewis_at_hotmail.com]<BR><B>Sent:</B> Tuesday, August 27, 2002 4:18 PM<BR><B>To:</B> Multiple recipients of list ORACLE-L<BR><B>Subject:</B> controlling CPU usage through Oracle<BR><BR></FONT></DIV> <DIV><FONT face=Arial size=2>Hi,</FONT></DIV> <DIV><FONT face=Arial size=2> I'm looking for a way to control CPU usage of</FONT></DIV>
in this </FONT></DIV>
<DIV><FONT face=Arial size=2>environment that these queries do not impact
the other</FONT></DIV>
<DIV><FONT face=Arial size=2>4 databases. </FONT></DIV>
<DIV><FONT face=Arial size=2> What I want to do is place a
limit on CPU usage</FONT></DIV>
<DIV><FONT face=Arial size=2>without terminating the query. I've looked at
profiles</FONT></DIV>
<DIV><FONT face=Arial size=2>with the "cpu_per_call" and "cpu_per_session"
settings.</FONT></DIV>
<DIV><FONT face=Arial size=2>I have never used profiles, but from what I
understand, </FONT></DIV>
<DIV><FONT face=Arial size=2>these will kill the session once they reach a
threshold.</FONT></DIV>
<DIV><FONT face=Arial size=2> I'm also looking at database
resource management.</FONT></DIV>
<DIV><FONT face=Arial size=2>This may be more appropriate for this
situation.</FONT></DIV>
<DIV><FONT face=Arial size=2> Has anyone used this, and if
so what are you</FONT></DIV>
<DIV><FONT face=Arial size=2>experiences ? Would you recommend it
?</FONT></DIV>
<DIV><FONT face=Arial size=2> Would the only way to
control CPU usage on this</FONT></DIV>
<DIV><FONT face=Arial size=2>box, be through the operating system
?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I welcome any suggestions. I appreciate your
time.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>The environment is Oracle 8.1.7.2, AIX
4.3.3.</FONT></DIV>
<DIV> </DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: dgoulet_at_vicr.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: kkennedy INET: kkennedy_at_firstpoint.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Wed Aug 28 2002 - 16:23:35 CDT
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