After upgrading a Java ES component to Java ES 5 on a Linux system running Application Server, attempts to start some deployed applications throw Java.security.AccessControlException. This problem arises because the location of antchanged in Java ES 5
Solution Upgrade Application Server to Java ES 5, or follow these steps:
In Application Server's config/asenv.conf file, change the value of AS_ANT_LIB from "/opt/sun/lib" to "/opt/sun/share/lib".
Restart Application Server.