How to Fix: Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session
Learn how to fix: Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session.
📋 Table of Contents
The NonUniqueObjectException in Hibernate occurs when you try to save an object that already exists in the database with the same identifier value. This is often due to a concurrency issue where two or more threads are trying to update the same object simultaneously.
🛑 Root Causes of the Error
- Concurrency issues when multiple threads try to update the same object.
🚀 How to Resolve This Issue
Method 1: Lazy Loading
- Step 1: Use lazy loading by setting the 'fetch' property to 'join' in your Hibernate configuration file.
Method 2: Pessimistic Locking
- Step 1: Use pessimistic locking by setting the 'lock' property to 'pessimistic' in your Hibernate configuration file.
💡 Conclusion
By implementing one of these methods, you can resolve the NonUniqueObjectException and ensure that your application can handle concurrent updates to the same object.
❓ Frequently Asked Questions
🛠️ Related Fixes
How to Fix: Pc crashes shortly after launching game (rainbow
Fix Pc crashes shortly after launching game (rainbow six siege). Compl
How to Fix: Installing an APK on a locked down phone
Installing an APK on a locked down phone: Try using a rooted device, e
How to Fix: New PC build- no signal and no clue
Fix New PC build- no signal and no clue. Complete troubleshooting guid