The directory server requires that your system have an installed version of at least Java SE 5.0 (Sun version 1.5.0_08) Java runtime environment (JRE). The preferred JRE is the latest version of Java SE 6.0. Java SE runtime environments for Solaris, Linux, and Windows systems are available online at the following web site: http://java.sun.com/javase/downloads.
Tested up to Version:
Sun JRE 1.5.0_18 (32-bit and 64-bit)
Sun JRE 1.6.0_14 (32-bit and 64-bit)
(Works best on the latest revision of Sun Java 6.0)