The Java Composite Application Platform Suite Installation Guide, available on the product media and the Enterprise Manager Documentation tab, and the Sun B2B Suite Release Notes, available on http://docs.sun.com, contain up-to-date operating system requirements for each supported platform.
Sun B2B Suite 5.1.1 is compatible with the following operating system platforms:
Sun Solaris 8 (on SPARC), 9 (on SPARC), and 10 (on SPARC) with required patches
HP-UX v11i (11.11) on PA-RISC, and 11i v2.0 (11.23) on Itanium with required patches and parameter changes
IBM AIX 5L, versions 5.2 and 5.3, with required maintenance level patches
Microsoft Windows 2000 SP3 and SP4, Windows XP SP1 and SP2, and Windows Server 2003 SP1
Red Hat Enterprise Linux AS 4 (on Intel x86)