Red Hat Application Stack V.1.1 has been tested and certified on Red Hat Enterprise Linux 4 U4 systems. It is not certified for use with earlier versions of Red Hat Enterprise Linux. Please follow the separate instructions for installing Red Hat Enterprise Linux 4 before installing Red Hat Application Stack V.1.1.

Red Hat Application Stack V.1.1 is available for 32- and 64-bit Intel architectures only (i386 and x86_64).

Red Hat Application Stack V.1.1 includes JBoss AS 4.0.5, for running web applications in a standard middleware environment. Note that JBoss AS uses an embedded Tomcat and does not require a stand-alone Tomcat. Before installing and running JBoss AS you will require a working installation of Java 1.4 or 1.5. Currently Red Hat Application Stack is certified with the Sun JVM version 1.4.2 update 13 or later, 1.5.0 update 11 or later, and the latest BEA JVM available through RHN. Please refer to Chapter 2, Configuring the Java Environment for instructions on configuring the Java environment for JBoss AS.

Red Hat Application Stack V.1.1 also includes JBoss EJB3 1.0.0-RC9, available as a technology preview. You will need a working Java 1.5 installation in order to use this package.