Sun GlassFish Enterprise Server 2.1 Developer's Guide

Using the System Class Loader

To use the System class loader, do one of the following, then restart the server:

Using the System class loader makes an application or module accessible to all applications or modules deployed on servers that share the same configuration.

Add the classes to the system-classpath attribute of the DAS in addition to the system-classpath attribute on the server instances that use the classes. The default name for the DAS configuration is server-config.