Hibernate exception _$$_javassist_0 cannot be cast to javassist.util.proxy.Proxy

hibernate 4.3.7 using javasssist new version and oracle weblogic older than that version for solve this problem will add this configuration to weblogic.xml

<wls:container-descriptor>
        <wls:prefer-application-packages>
            <wls:package-name>javassist</wls:package-name>
        </wls:prefer-application-packages>
    </wls:container-descriptor>