java.lang.NoClassDefFoundError: org/hibernate/MappingException in weblogic 10.3.6

I am trying to deploy our EAR file in the dev environment server(Weblogic 10.3.6), After deployment while starting it is showing java.lang.NoClassDefFoundError: org/hibernate/MappingException. I have checked that in lib folder i found hibernate jars. More over it is working fine in my local weblogic 10.3.6 server. Any help will appreciable