Thanks Thomas for sending this to the list. Lisa Koivu Oracle Database Baby Oven Fairfield Resorts, Inc. 5259 Coconut Creek Parkway Ft. Lauderdale, FL, USA 33063
> -----Original Message----- > From: Thomas Day [SMTP:[EMAIL PROTECTED]] > Sent: Monday, April 29, 2002 9:59 AM > To: Multiple recipients of list ORACLE-L > Subject: RE: CPU Pegged at 100% > > > I don't think that increasing the db_writer_processes will help. NT is, > as > noted elsewhere, multi-threaded. Increasing the db_writer_processes will > not start a new process. > > My experience with Oracle on NT is that when the CPU is pegged at 100% it > is because the OS is constantly writing and fetching the contents of RAM > to > the swapfile. > > Meghraj Thakkar from Quest has a good paper on running Oracle 9i on > Windows > NT/2000. A search on Yahoo will probably find it for you. I don't have > the URL. > > The following points are taken from that paper. > > Decrease the size of SGA so that all of the SGA and the OS will fit in > physical RAM. This will decrease the use of the swapfile. > > Choose "Maximum throughput for network applications" in the control panel. > Oracle does it's own memory management. Trying to let Windows memory > manage on top of that adds to swapfile use. > > From the Services panel, disable all unneeded services. This includes > License logging service, plug and play, remote access autodial manager, > remote access connection manager, remote access server, and telephony > service. > > You should not touch alerter, browser, eventlog, messenger, Oracle > ServiceXXXX, Oracle TNSListener, Server, spooler and workstation. > > If you have 9i, set PRE_PAGE_SGA = TRUE. This tells Windows to keep the > SGA in physical memory (RAM) as much as possible. It will get paged out > --- that's the nature of Windows --- but not as often. > > Windows does IO buffering. However, Oracle does its own IO buffering > apart > from the OS. Performance can be increased and more of the RAM made > available to the SGA by using REGEDIT and editing the registry. Go to > \HKEY_LOCAL_MACHINE\Control\SessionManager\MemoryManagement and setting > LargeSystemCache to 0. Be sure to back up the Registry before editing. > > HTH > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Thomas Day > INET: [EMAIL PROTECTED] > > 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: [EMAIL PROTECTED] (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: Koivu, Lisa INET: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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).
