Although I have ibm-jdk and sun-jdk, java-config says: !!! No Java installation found As I see, it looks for a file named: /etc/env.d/20java, but that doesn't exist, only a directory /etc/env.d/java, with all the files inside it. I think java-config should be updated or something...
Have you actually run something like: java-config --set-system-vm=ibm-jdk-1.3.1
yes... it seems it works, but the message is confusing ('No Java installation found').