Chapter 2. Configuring the Java Environment
JBoss AS relies on an installed JVM, such as those by Sun, or BEA. The BEA JVM is available from the Red Hat Enterprise Linux (AS/ES) Extras channel. The Sun SDK must be downloaded directly from Sun (instructions below).
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. This may change in future releases.