@Entity
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE, region = "item")
public class CacheableItem {
	private Long id;
	private String name;

	public CacheableItem() {
	}

	public CacheableItem(String name) {
		this.name = name;
	}

	@Id
	@GeneratedValue(generator = "increment")
	@GenericGenerator(name = "increment", strategy = "increment")
	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
}

@Test
public void testUpdateAndRefresh() {
	// prepare data
	Session s = openSession();
	s.beginTransaction();
	CacheableItem item = new CacheableItem( "item" );
	s.save( item );
	s.getTransaction().commit();
	s.close();

	Session s1 = openSession();
	s1.beginTransaction();

	CacheableItem item1 = s1.get( CacheableItem.class, item.getId() ); // into persistent context
	item1.setName( "some name" );

	s1.flush();
	s1.clear(); // clear persistent context
	s1.refresh( item1 );

	item1 = s1.get( CacheableItem.class, item.getId() );
	assertEquals( "some name", item1.getName() );

	// open another session
	Session s2 = sessionFactory().openSession();
	try {
		s2.beginTransaction();
		CacheableItem item2 = s2.get( CacheableItem.class, item.getId() );

		assertEquals( "item", item2.getName() );

	} catch (PessimisticLockException expected) {
		// expected if MVCC is not enabled
	} catch (Exception e) {
		throw e;
	} finally {
		s2.getTransaction().rollback();
		s2.close();
	}

	s1.getTransaction().rollback();
	s1.close();

}

hibernate.dialect org.hibernate.dialect.H2Dialect
hibernate.connection.driver_class org.h2.Driver
hibernate.connection.url jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1;MVCC=true
hibernate.connection.username sa
...