I encounter a problem with DB2

my DB2 is old, i am using JDBC-ODBC driver , setting is like below
<property name="connection.driver_class">COM.ibm.db2.jdbc.app.DB2Driver</property>
<property name="connection.url">jdbc:db2:XXXXX</property>
<property name="connection.username">XXXX</property>
<property name="connection.password">XXXX</property>
<property name="show_sql">true</property>
<property name="default_schema">XXXX</property>
<property name="dialect">org.hibernate.dialect.DB2Dialect</property>
<property name="current_session_context_class">thread</property>

If i use SessionFactory.getCurrentSession(), then when i use hibernate session to do any operation within transaction.
I will get excpetion said , transaction is not active.

but when i use SessionFactory.openSession() everything works fine.

Anyone knows the reason?

Rgds

According hibernate docu you must call



before you begin with transactional work (listing 11.2 in book "java persistence with hibernate").



can it be that there you did just some query, so hibernate did the queries with non-transactional read only access ?

Below is my code, i thought it is also correct

HibernateUtil.getSessionFactory().getCurrentSession()
.beginTransaction();
Criteria query = (Criteria) HibernateUtil.getSessionFactory().getCurrentSession().createCriteria(
Finaceauthority.class);
Collection<Finaceauthority> fas = query.list();
for (Finaceauthority fa : fas) {
logger.info(fa);
}
HibernateUtil.getSessionFactory().getCurrentSession()
.getTransaction().commit();

Then i got exception
org.hibernate.HibernateException: createCriteria is not valid without active transaction