Answer: If you are new to Java ES installation, the following materials can help you become familiar with the installation process. In fact, you should not attempt to install Java ES software until you understand the process and have developed an installation plan.
Read about how the installer works. See How the Java ES Installer Works in Sun Java Enterprise System 5 Installation Guide for UNIX.
View the Sun Java Enterprise System 5 Installer Tutorial for UNIX.
Review the and create an installation plan. Refer to the Sun Java Enterprise System 5 Installation Planning Guide.
Determine if any of the examples in apply to your installation. See Chapter 2, Example Installation Sequences, in Sun Java Enterprise System 5 Installation Guide for UNIX.
Review the known issues for installation. Refer to the Installation Issues in Sun Java Enterprise System 5 Release Notes for UNIX.
Perform an evaluation installation on a single host. See Q2: Is there an installation tutorial or demo available? Additional information is available in the Evaluate page of the Java ES hub.
Plan your production deployment. Refer to the Sun Java Enterprise System Deployment Planning Guide.