I am new to Hibernate and I am trying to run the Cat example from version 3.
I am using also Tomcat 5.5.7 and Java 1.5.

Do I need DBCP connection pooling as a must?
I didn't setup one.

I just want to use "hibernate.cfg.xml" like:

<hibernate-configuration>

<session-factory>

<property name="connection.driver_class">org.gjt.mm.mysql.Driver</property>
<property name="connection.url">jdbc:mysql://xxx/xxx</property>
<property name="connection.username">root</property>
<property name="connection.password">xxx</property>

<property name="show_sql">false</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>

<!-- Mapping files -->
<mapping resource="Cat.hbm.xml"/>

</session-factory>

</hibernate-configuration>


Then I want to use it in a jsp test:

=== jsp ===

SessionFactory sf;
Session s;
Transaction transaction;

try{
sf = new Configuration().configure().buildSessionFactory();

s = sf.openSession();

transaction = s.beginTransaction();

Cat princess = new Cat();
princess.setName("Princess");
princess.setSex('F');
princess.setWeight(7.4f);

s.save(princess);

transaction.commit();

s.close();

} catch (HibernateException e) { throw new ServletException(e); }

===

But the sessionFactory failes to create:
java.lang.NoClassDefFoundError
org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:111)
org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:166)
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:53)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:325)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


Is it because I do not have a pooled connection or I need something more in my "hibernate.cfg.xml"?

Thank you.

it works now,

just that jta.jar is required.

in quickstart.html, in the documentation,

it should be marked as required.

The documentation points you to README.txt in the lib directory - jta.jar is _NOT_ required on all deployment platforms.