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Introduction to the Zero Downtime //Migrations Are Real!

About Zero Downtime Upgrades and Planning
The zero downtime methodology is an alternative to the in-place upgrade methodology that is described in Part II and Part III of this book. The zero downtime upgrade methodology is also known as an out-of-place upgrade for reasons that are described in this chapter. Before you decided which method is appropriate for use when upgrading your deployment, Oracle recommends that you read all information about zero downtime upgrades as well as the in-place upgrade.
The zero downtime upgrade method is available as an option for those who want to upgrade with very little disruption to their original deployment and the services that are provided to internal and external customers. The zero downtime method provides the following features for mission-critical deployments:


http://download.oracle.com/docs/cd/E12530_01/oam.1014/b32416/zdt_ovr.htm[

http://www.greatlittlebook.com/Products/ZDTM/

http://www.networkmigrationworkbook.com/

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