Hibernate session factory close drops all auto generated tables

Question

Using hibernate4

SessionFactory factory = new Configuration().configure()
            .buildSessionFactory();
    Session session = factory.openSession();
    session.beginTransaction();
    //do some task
    session.getTransaction().commit();
    session.close();
    factory.close();

Using auto generated proprty

<property name="hibernate.hbm2ddl.auto">create-drop</property>

as you can see I am closing my session factory it drops all my tables after this code completed as I see on console. Is it the default behaviour

Answer 1

This is expected behavior for the create-drop mode.

See this documentation for more information.

Additionally, see this article for more exposition on the values.

Answer 2

That's the intention of the property create-drop.

Use create or update to keep your tables.

Answer 3

change hbm2dll.auto property in your hibernate mapping to "update" to keep the changes you do in the database.