anonymous wrote : which exact version of JBoss-5 do you use? I am using the JBoss 5.0.0.GA compiled by JDK 5 anonymous wrote : Please post more details including the entire exception stacktrace and the console logs. The error in the log file is java.lang.UnsatisfiedLinkError java.lang.UnsatisfiedLinkError: no JT in java.library.path Although I see the following when JBoss start 09:30:53,929 INFO [ServerImpl] Server Native Dir: /usr/local/jboss-5.0.0.GA/server/default/tmp/native But not only my libJT.so is not in there, The native directory does not exist. I can't set the java.library.path to the tmp/native directory because the so file is not there. I used to see the following line In JBoss 4 09:25:45,679 INFO [SARDeployer] Loading native library: /usr/local/jboss-4.2.3.GA/server/default/tmp/native/libJT.so View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4200252#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...