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Re: controlling CPU usage through Oracle

From: Ed Lewis <eglewis_at_hotmail.com>
Date: Wed, 28 Aug 2002 05:13:23 -0800
Message-ID: <F001.004C1407.20020828051323@fatcity.com>


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 Jamadagni MIS, ESPN Inc.

  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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Author: Ed Lewis
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Received on Wed Aug 28 2002 - 08:13:23 CDT

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