Peter, you're totally right... I have one problem. I follow your advices step by step. I installed jdk1.5.0_16 with JBoss 4.2.2.GA, but when i was verify if the installation was ok using the command "/usr/sbin/alternatives --config java or javac" the result is this: [thiago@xxxx ~]$ /usr/sbin/alternatives --config java There is 1 program that provides 'java'. Selection Command ----------------------------------------------- *+ 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java How can i change this? Like you tell me, i need to refresh this with the SUN JDK 1.5.0_16, but i don't know how can i do this. I will need your help for more one time. Thanks. Thiago. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165146#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...