Sun Java System Application Server Platform Edition 9 Upgrade and Migration Guide

System Properties

The default security policy of Application Server 9 does not allow you to change some system properties. For example, in Application Server 7, the read/write permission for java.util.PropertyPermission was "*", "read,write";. In Application Server 9the read/write permission for java.util.PropertyPermission is "*", "read";. The administrator can change the security policy to grant write access to specific system properties.