anonymous wrote : still hibernate will not know of the class. Why does hibernate have to know about the process classes? As I see it, hibernate only needs to provide the byte array. It is SerializableToByteArrayConverter's responsibility to read an object from the bytes. A subclass of ObjectInputStream may be required to bring the ProcessClassLoader into the equation without touching the context class loader. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4155166#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...