Or a similar message when we use a different JPA provider than the Hibernate Entity Manager.
But, if I get the element (without get by Lazy Data Model), directly from entitymanager, merge can update this element.
A detached object is one that is not managed in the current persistence context.
Product; @Stateless public class Product Manager Bean implements Product Manager Vijay, That's an awesome explanation!!!
This is not an introduction to Hibernate and you should already know the basics of configuration, object-relational mapping and working with entity instances.
Ensure you are calling merge on the correct Entity Manager that is in a transaction.
For an introductory article to Hibernate, visit our tutorial on Hibernate 4 with Spring.