Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
Home -> Community -> Mailing Lists -> Oracle-L -> Re: DB Sizing and init parameters
Pradeep,
Unfortunately it isn't that simple. Other factors, primarily based around the purpose of the database play a big role in many parameters. For example, the sort_area_size is determined by the number and size of sort operations which will be performed. An OLTP system will typically have a much smaller sort area than a warehousing application. The number of open cursors will depend heavily on the maximum number of concurrent users connecting to the system. Also, many parameters can be tuned over time in response to particular performance problems and therefore don't need a lot of attention initially.
So, the values for init.ora parameters is unfortunately much more complex than simple database size. Having said that, if you have accurate sizing information then you quite possibly have a lot of the other information you will require, such as concurrent users, etc. You can search the web for various rules and guidelines for each individual parameter. Be careful that the guidelines are appropriate for the version of Oracle you will be working with - rules change over time.
I'd start with the parameters that cannot be easily changed - block size immediately comes to mind. At least things like sort_area_size can be changed later on if you notice a performance problem.
Good luck,
Mark.
pradeep_at_ibsplc .com To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Sent by: cc: root_at_fatcity.c Subject: DB Sizing and init parameters om 09/05/2003 14:56 Please respond to ORACLE-L
Dear All,
If we have done the DB Sizing for a particular database, Can we arrive upon the initialization parameters for that database ? If so, Can someone help me in attaining the formula or relation of these the parameters based on the db sizing.
Thanks and Regards,
Pradeep
Disclaimer:
"The information in this e-mail is intended only for the person to
whom it is addressed and may contain confidential and/or privileged
material. IBS makes no warranty, express or implied, nor guarantees
the accuracy, adequacy or completeness of the information and is not
liable for any errors, defects, omissions, viruses, or for resultant
loss or damage, if any, direct or indirect."
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: INET: pradeep_at_ibsplc.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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 Fri May 09 2003 - 00:46:37 CDT
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<---->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Privileged/Confidential information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply e-mail or by telephone on (61 3) 9612-6999. Please advise immediately if you or your employer does not consent to Internet e-mail for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of Transurban City Link Ltd shall be understood as neither given nor endorsed by it. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<---->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Mark Richard INET: mrichard_at_transurban.com.au Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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).