JPA and MySQL transaction isolation level

Question

I have a native query that does a batch insert into a MySQL database:

    String sql = \"insert into t1 (a, b) select x, y from t2 where x = \'foo\'\";
    E         


        

Answer 1

You need to set it at the connection level, get the session from the entitymanager and do this:

org.hibernate.Session session = (Session)entityManager.getDelegate();
Connection connection = session.connection();
connection.setTransactionIsolation(Connection.READ_UNCOMMITTED);