Re: Database Performance Question

You may want to look at using materialized views. They are easy to setup and can be refreshed manualy or automaticaly.

Thanks,
cj

                                                                                       
                            
                    SRAJENDRAN_at_nlf                                                     
                            
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                    root_at_fatcity.c       Subject:     Database Performance Question    
                            
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                    01/29/2002                                                         
                            
                    10:25 AM                                                           
                            
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Hello all:

We have an application that is having slow response time against an 8i database, I would like to improve the response time. This is a web based application accessing the database with about 2000 users. Most of the application queries are based on complex joins on 4 big tables with each having over 5 million rows( biggest table has 18 million rows). I have tuned the Package queries for the best explain plan possible, but still do not seem to make dramatic change in the response time. Though, I was able to make significant headway tuning these packages by bringing down response times from 7 minutes to under 3 minutes. But this is not an acceptable response time from a web-application perspective.

I am considering creating data cubes based on the most frequently used join conditions and pre-populate them on a nightly basis or use triggers to update the cube simultaneously.
I am hoping that this enhance the response times.

I would greatly appreciate your suggestions or opinions on this idea. If you
have an alternative/better way of achiving this please enlighten me.

Thank very much.
Srini Rajendran.

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