GlassFish Server includes complete product documentation. Search the documentation to see if your problem is addressed. Documentation is available at http://docs.sun.com/coll/1343.9. See GlassFish Server Documentation Set for the books in the documentation set and a description of their contents. Also see the Administration Console online help for detailed information about performing administrative tasks using the graphical interface.
The following books will be especially helpful for troubleshooting:
Oracle GlassFish Server 3.0.1 Release Notes, which provides the latest information regarding known issues and possible workarounds.
Oracle GlassFish Server 3.0.1 Error Message Reference, which lists error messages you might encounter when using GlassFish Server.
Use the product documentation to learn more about GlassFish Server 3.0.1. The more you know about the product the easier it might be to figure out why something isn't working.