Sun Java System Application Server Enterprise Edition 8.1 2005Q2 Deployment Planning Guide

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## Named Configurations

A named configuration is an abstraction that encapsulates Application Server property settings. Clusters and stand-alone server instances reference a named configuration to get their property settings. With named configurations, J2EE containers’ configurations are independent of the physical machine on which they reside, except for particulars such as IP address, port number, and amount of heap memory. Using named configurations provides power and flexibility to Application Server administration.

To apply configuration changes, you simply change the property settings of the named configuration, and all the clusters and stand-alone instances that reference it pick up the changes. You can only delete a named configuration when all references to it have been removed. A domain can contain multiple named configurations.

The Application Server comes with a default configuration, called default-config. The default configuration is optimized for developer productivity in Application Server Platform Edition and for security and high availability in the Application Server Enterprise Edition.

You can create your own named configuration based on the default configuration that you can customize for your own purposes. Use the Admin Console and `asadmin` command line utility to create and manage named configurations.

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