Where can I find answers to my questions about persistence and the Java Persistence API?

The Java Persistence API FAQ is a great place to start.

You can download the Java Persistence API part of the JSR 220: Enterprise JavaBeansTM 3.0 from the specification page.

The following chapters of the Java EE 5 Tutorial cover use of Java Persistence API:

• Introduction to the Java Persistence API
• Persistence in the Web Tier
• Persistence in the EJB Tier
• The Java Persistence Query Language

There is also a user mailing list for Glassfish:persistence, which is also hosted as a forum on, Nable

Glassfish persistence is the TopLink Essentials product and questions may also be posted to the Oracle TopLink forum or the GlassFish forum.