Enhancer e = new Enhancer();

        e.setCallbackTypes(new Class[]{
            MethodInterceptor.class,
            NoOp.class,
        });

        e.setCallbackFilter(


         new CallbackFilter(){

             int accept(Method m){
               //return callback index in CallbackTypes array
                if(isFinalize(m))
                  return 1; //NoOp code generator
                 else return 0;
             
              }

           }

       );

import org.hibernate.*;
import org.hibernate.cfg.Configuration;

import java.util.logging.*;


/**
* A simple test class to demonstrate pause times in hibernate due
* to finalizers.  Based on the simple cats example in the quickstart
* guide using Hypersonic as a database.<p>
*/

public class PauseTest {

    /**
     *Empty Constructor.<p>
     */
    public PauseTest(){
   Level newLevel =Level.SEVERE; // We still want to log errors
        Logger tmpLogger = java.util.logging.Logger.getLogger("org.hibernate");
        tmpLogger.setLevel(newLevel);
    }

    /**
     * Create the session factory for this test.<p>
     *
     */
    public SessionFactory getSessionFactory(){
   Configuration configuration = new Configuration()
       .setProperty("hibernate.hbm2ddl.auto","update")
       .setProperty("hibernate.dialect", "org.hibernate.dialect.HSQLDialect")
       .setProperty("hibernate.connection.driver_class", "org.hsqldb.jdbcDriver")
       .setProperty("hibernate.connection.url","jdbc:hsqldb:mem:test")
       .setProperty("hibernate.connection.username", "sa")
       .setProperty("hibernate.connection.pool_size", "1")
       .setProperty("hibernate.cache.provider_class", "org.hibernate.cache.HashtableCacheProvider")
       .setProperty("hibernate.show_sql", "false")
       .addClass(Cat.class);

   return configuration.buildSessionFactory();
    }

    /**
     * Starts the test routine.<p>
     * @param n The number of iterations.
     */
    public void start(int n) throws Exception {

   SessionFactory factory = getSessionFactory();
   Session session = null;

   for (int i=0 ;i<n; i++) {
       try {      
      session = factory.openSession();
      Cat princess = new Cat();
      princess.setName("Princess"+i);
      princess.setSex('F');
      princess.setWeight(7.4f);
      session.save(princess);
      session.flush();
      session.connection().commit();
       } catch (HibernateException he) {
      he.printStackTrace();
       }
       finally {
      session.close();
       }
   }
    }

    /**
     * Start the pause test.<p>
     *
     */
    public static void main(String[] args) throws Exception{

   long timeStamp = System.currentTimeMillis();
   PauseTest aTest = new PauseTest();
   System.out.println("Starting test.");
   if (args[0] !=null){
       aTest.start(Integer.parseInt(args[0]));
   }else {
       aTest.start(200);
   }
   long delta = System.currentTimeMillis() - timeStamp;
   System.out.println("Time to complete test: "+delta+" ms.");
    }

}