I am having the same problem. I've been working on it for two days and can't find anything or any help anywhere else on the internet. I think it has something to do with how my connection here is referred to as a Proxy, and I think that may have something to do with where the ojdbc14.jar is located. In our other application we get a similar error when it IS under server//lib while I can't even access this installtion if it is not under there. java.lang.reflect.UndeclaredThrowableException at $Proxy52.getConnection(Unknown Source) at com.hpc.dms2.dao.ByteArrayBlobType.nullSafeSet(ByteArrayBlobType.java:156) at org.hibernate.type.CustomType.nullSafeSet(CustomType.java:140) at org.hibernate.persister.entity.BasicEntityPersister.dehydrate(BasicEntityPersister.java:1607) at org.hibernate.persister.entity.BasicEntityPersister.update(BasicEntityPersister.java:1953) at org.hibernate.persister.entity.BasicEntityPersister.updateOrInsert(BasicEntityPersister.java:189 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3991805#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...