my dog learned polymorphism
The moose likes Object Relational Mapping and the fly likes Unable to instantiate default tuplizer [org.hibernate.tuple.entity.DynamicMapEntityTuplizer] Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Databases » Object Relational Mapping
Bookmark "Unable to instantiate default tuplizer [org.hibernate.tuple.entity.DynamicMapEntityTuplizer]" Watch "Unable to instantiate default tuplizer [org.hibernate.tuple.entity.DynamicMapEntityTuplizer]" New topic

Unable to instantiate default tuplizer [org.hibernate.tuple.entity.DynamicMapEntityTuplizer]

Ameya Thakur
Ranch Hand

Joined: Feb 04, 2004
Posts: 43
Hello All,

I have started with a small project with JSF / Hibernate which I have tested on my local enviroment and it works fine locally when deployed on the server it is throwing the following exception for the 1st time and If I login again and try to save I get the NoClassDefFoundError

1st Error
java.lang.NullPointerException - Unable to instantiate default tuplizer [org.hibernate.tuple.entity.DynamicMapEntityTuplizer

2nd Error
Caused by:
java.lang.NoClassDefFoundError - Exception while invoking expression #{IOPPRegBean.authenticate}

I have ftp all the classes from local to the server and JSF naviagtion is working fine.. I get this error when from my handler class I try to get the Instance of HibernateUtil for saving the value.... we are been struggling like any thing from last 3 days to get it working on the server.....

Our site is hosted on and it is not a decdicated server....

Snippet from HibernatUtil l

Code ffrom the Handler which call HibernateUtil

Also the problem is only on the server... and everything is same even the database is same....

Any thoughts suggestion , details would be welcomed......

Thanks & Regards,
I agree. Here's the link:
subject: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.DynamicMapEntityTuplizer]
It's not a secret anymore!