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Home -> Community -> Mailing Lists -> Oracle-L -> RE: controlling CPU usage through Oracle
Ed - Have you looked at Oracle's Database Resource Manager feature? It may
have had another name in 8i. The idea is that if you can segregate the
queries and let Oracle allocate the resources, a lot more can be done, in
theory, than the O.S. scheduler can.
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-----Original Message-----
Sent: Tuesday, August 27, 2002 3:18 PM
To: Multiple recipients of list ORACLE-L
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.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: DENNIS WILLIAMS
INET: DWILLIAMS_at_LIFETOUCH.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 Tue Aug 27 2002 - 16:38:34 CDT
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