Message Title

This is still a problem and source of potential data loss in hibernate 6.1.7. For my case, which is Spring Boot, I’ve implemented this workaround:

@Service
public class StatelessSessionRunner {
  private final Session session;
  
  public StatelessSessionRunner(Session session) {
    this.session = session;
  }

  public <T> T runWithStatelessSession(Function<StatelessSession, T> func) {
    return session.doReturningWork(connection -> {
      try (StatelessSession statelessSession = session.getSessionFactory().openStatelessSession(connection)) {
        var result = func.apply(statelessSession);
        // workaround for https://hibernate.atlassian.net/browse/HHH-4042
        ((SharedSessionContractImplementor) statelessSession).getJdbcCoordinator().executeBatch();
        return result;
      }
    });
  }
}

Which allows you to perform some operations using a stateless session within a larger transaction.