• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 432
  • Last Modified:


Hi All,

Please advise on what we should do to prevent the following exception.

- MKOCO95200M42Q0 : a different object with the same identifier value was already associated with the session: web.enrollment.bean.organization.EnrollmentAccomodationsBean#308: org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: web.enrollment.bean.organization.EnrollmentAccomodationsBean#308
1 Solution
The Java objects and Hibernate objects are handled differently. In this case, you have opened a hibernate session and associated an object to that identifier. So when you try to merge in a new java object within the same hibernate session, that identifier is already used in hibernate cache and you get that exception.

What you should do is either complete the merge of the initial object and close or clear the session, or evict the hibernate object from the cache before reusing the identifier.

Chapter 11 of the documentation contains most of the information you need:

For the rest of the documentation see:
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Cloud Class® Course: Microsoft Windows 7 Basic

This introductory course to Windows 7 environment will teach you about working with the Windows operating system. You will learn about basic functions including start menu; the desktop; managing files, folders, and libraries.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now