Book Image

Oracle Information Integration, Migration, and Consolidation

Book Image

Oracle Information Integration, Migration, and Consolidation

Overview of this book

The book covers data migration, data consolidation, and data integration, the three scenarios that are typically part of the information integration life cycle. Organizations typically find themselves migrating data to Oracle and either later, or at the same time, consolidating multiple database instances into a single global instance for a department, or even an entire company. The business savings and technical benefits of data consolidation cannot be overlooked, and this book will help you to use Oracle's technology to achieve these goals. This highly practical and business-applicable book will teach you to be successful with the latest Oracle data and application integration, migration, information life-cycle management, and consolidation products and technologies.In this book, you will gain hands-on advice about data consolidation, integration, and migration using tools and best practices. Along the way you will leverage products like Oracle Data Integrator, Oracle GoldenGate, and SQL Developer, as well as Data Hubs and 11gR2 Database. The book covers everything from the early background of information integration and the impact of SOA, to products like Oracle GoldenGate and Oracle Data Integrator. By the end you'll have a clear idea of where information and application integration is headed and how to plan your own projects.
Table of Contents (17 chapters)
Oracle Information Integration, Migration, and Consolidation
Credits
About The Author
About the Contributing Authors
About the Reviewers
www.PacktPub.com
Preface

Database migration scenarios


Most common database migrations involve migrating from:

  • Sybase, SQL Server, DB2, and so on, to Oracle due to a combination of the previously discussed drivers for such migrations.

  • Migration of an Oracle database from one platform to another. This effort is typically undertaken due to changes in the underlying platform, for example operating systems change (Unix to Linux, Windows to Linux), periodic hardware refresh cycles, a platform change (HP to IBM, IBM to Oracle SUN, and so on), and moving from 32 bit platforms to 64 bit platforms.

Complexities of the database migrations depend on factors such as:

  • A large number of database(s)/schema objects

  • The complexity of the business logic: embedded within stored procedures/triggers involving temporary tables, multiple result sets, database-specific functionality involving system tables/functions

  • The size of the stored procedure/triggers/views in terms of lines of code (LOC)

  • Very large databases (multi-terabytes+)

  • The downtime...