How to properly close and open a Hibernate session?

Question

I have the following method that inserts a large batch of records every few seconds. After some time of running I get errors like the following:

ERROR: C

Answer 1

Rather make a generic method for any object type and pass the object. Add logic of any List too.

public void save(Object obj) {
    Session session = null;
    Transaction transaction = null;
    try {
        session = sessionFactory.getCurrentSession();
        transaction = session.beginTransaction();
        session.save(obj);
        session.flush();
        transaction.commit();
    } catch (JDBCException jde) {
        logger.fatal("Error occured in database communication", jde);
        transaction.rollback();
        throw new RuntimeException(jde);
    } finally {
        if (session.isOpen()) {
            session.close();
        }
    }
}