I was trying to install both x86_64 and i386 versions of java-1.5.0-ibm but
there is packaging problem with conflicting files (message from yum):
Transaction Check Error: file /var/www/cgi-bin/java-rmi-188.8.131.52.cgi from
install of java-1.5.0-ibm-devel-184.108.40.206-1jpp.0.1.el5 conflicts with file from
32 and 64 bit IBM JDKs can now be installed in parallel.