Hibernate JPA and Spring javax.persistence.TransactionRequiredException: no transaction is in progress

Question

When I call:

entityManager.flush()

I get the exception mentioned in the title.

I am using Hibernate JPA.

Answer 1

Ensure that you have an active transaction when this statement executes. If you are using JPA use EntityManager.getTransaction().begin(). This is assuming that you are using JPA outside a JTA transaction scope.

If you are running the application inside a container with JTA support you can also use JTA UserTransaction to manage transactions.