While including/adjusting information in the database, Hibernate maintains sessions. In the session, it stores a form of the instances which are to be held on. If these instances or records are altered or modified before the session is closed, it is known as filthy checking.  Nonetheless, we can keep Hibernate from holding the elements in its session longer than really required. So once the requirements are done, we will not have to keep the instances in the session any longer. For this situation, we can securely flush and clear the EntityManager to adjust the condition of elements in the database and expel the instances from the session. This will keep the application far from memory requirements and beyond any doubt to affect the execution on a higher side.

The following is a piece of code that can be used to flush() and clear() the Hibernate session:

entityManager.flush();
entityManager.clear();