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Oracle Tips 

by Burleson Consulting

The Data Warehouse Development Life Cycle

Oracle Features for the Data Warehouse
While Oracle markets itself as a generic database management system, there are several features that greatly assist in the creation of fast and useful data warehouses. While many of the Oracle features are discussed throughout this text, this chapter will focus on those features of Oracle that are designed specifically for the data warehouse. The topics for this chapter will include managing tables, indexes, and tablespaces in a data warehouse context. In addition, we will cover bitmapped indexes, the table cache option, and other indispensable concepts for the Oracle data warehouse developer.

Planning For Growth of the Data Warehouse
One of the biggest problems in data warehousing is the issue of planning for growth and ensuring that your data warehouse continues to perform at an acceptable level. As we know, databases run within a well-defined domain of systems resources, and a shortage of these system resources can lead to performance degradation. The trick is to design a data warehouse architecture with the ability to add resources on an as-needed basis without interrupting processing.

Growth of a database can occur in several areas. As the physical size of the database increases, so does the need for disk storage. As the volume of users increases, so does the need for increased buffer and lock pool storage. As network traffic increases, an increasing demand falls on the routers and bandwidth may need to be increased.

This is an excerpt from "High Performance Data Warehousing". To learn more about Oracle, try "Oracle Tuning: The Definitive Reference", by Donald K. Burleson.  You can buy it direct from the publisher at 30% off here:


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