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Re: Info on large tables wanted

From: Romeo Olympia <>
Date: 6 Jun 2004 20:00:59 -0700
Message-ID: <>

36 million records (or even 150 million) isn't really that big a number. The structure even suggests that your average row length is quite well.. average. Of course it would help if we know your hardware capacity beforehand (number of CPUs, disk configuration, and memory which you already provided).

Your system is probably not a dedicated data warehouse but look up the Data Warehousing Guide for Oracle. The link below is for 9i; find the one for your specific version (hopefully you have at least 8i).

Oracle9i Data Warehousing Guide
Release 2 (9.2)
Part Number A96520-01

This document will introduce you to the different methods of handling "large" data in Oracle. Things to pay attention to (not exhaustive):

- Partitioning
- Parallelization
- Bitmap indexes (if applicable)
- etc.

Hope that helps.


"Markus Vohburger" <> wrote in message news:<c9vumj$3e9$05$>...
> Hello out there!
> I am just planning a new Reporting Application for a large chain of
> bakeries. I have done already applications like this, but not with that
> amount of Data.
> Roughly, the Bakery has 120 Shops.
> Each Bakery has about 500 Customers per Day
> Each customer buys 2 Different Items in Average. There are about 100
> different Items.
> so this makes
> 120*500*2 = 120000 Items bought per day
> 120000*6 = 720000 per week
> 720000*50 =36.000.000 per Year with 300 buisness days
> Raw data is delivered in the following Format
> Shop-ID Integer
> Item-Id Integer
> Item Amount Float
> Item Price Float
> Timestamp DateTime
> I need to build a database where each Item is stored with the above Data, so
> they can make Reports on when particular Items sell best eg.
> Is there a problem with tables that contain 36.000.000 records? maybe they
> want to accumulate 5 Year of Sales Data, so this would make over 150.000.000
> records.
> I have done several tests with about 10.000.000 Dummy Records on my test
> machine.
> AMD2000, 1GB Ram, Index Tablespace on a seperate harddisk and the like, the
> response time was quite satisfactory, but will it be with 20 times the data?
> Has anybody experience with such large Tables?
> How big are your Databases (number of Records)
> What machines do you use?
> Any comments welcome!
> regards
> MV
Received on Sun Jun 06 2004 - 22:00:59 CDT

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