Hibernate Exceptions

Learn to solve java exception UnexpectedTypeException while using hibernate validator for java bean validations.

If you are working on Hibernate and HSqlDB, and you are trying to fetch collection of entities, then you may face this error. For single entity you may or may not find this error. Exception will look like this: Solution This error is due to version mismatch of hibernate and …

1. Reason we might face this exception if we are trying to execute stored procedure using JPA 2.1 and hibernate’s entity manager, and we are not using the entity manager’s registerStoredProcedureParameter() correctly. Incorrect usage may look like below OR the one you have written. The exception will look like this: …

We might face this exception if we are trying to execute any query OR stored procedure, and parameters are not set in the correct datatype.

You may get NotYetImplementedException exception when you are trying to include some native SQL queries in your project as named native queries, and you do not expect any result after execution of those sql queries. e.g. SQL UPDATE queries which does not return any result. Problem Let’s say you want …

If you are trying to setup your project/ or adding dependency for hibernate 4 then you might face this error in your server logs. Stack-trace will be looking like this: Solution: If you have anything like below declaraions in your hibernate configuration for “sessionFactory” then remove it. OR Once you …

If you are trying to setup your project/ or adding dependency for hibernate 4 then you might face this error in your server logs. Stack-trace will be looking like this: Solution: Reason is that you have incompatible jar’s versions in your application classpath. To resolve this issue, make sure you …

1. Reason If we are trying to setup your project/ or adding a dependency for hibernate then we might face this error in your server logs. Stack-trace will be looking like this: 2. Solution The reason is that we have incompatible jar versions in our application classpath. To resolve this …

1. Reason The ObjectNotFoundException exception is thrown when we try to load an entity in hibernate with session.load() method and entity is not found. The exception trace looks like this: 2. Solution The correct way to solve this problem is to use session.get() method. The get() method will return null …

1. Reason While working on post “Named queries in hibernate“, I encountered this error. Hibernate entity I coded was like this: And the error was: 2. Solution The problem is with the entity names in most of the cases. Actually, we have to follow HQL syntax, and it tells us …