public void createObj(){   
      
      Session session = HibernateUtil.currentSession();   
      ObjectID objectId= new ObjectID(1,2,3);
      
      Object1 object1 = new Object1(objectId);
      Transaction transaction = null;
      try{
         transaction = session.beginTransaction();
         session.save(object1);                  
      
         try{            
            session.flush();
            session.clear();
         } catch (Exception except){
            log.warn("Unable to flush session due to : " + except.getMessage());
         }
         transaction.commit();
      }catch(Exception ex){
          if (transaction!=null)
             transaction.rollback();

         throw new DBException(ex);
      }
   }

   public Object1 getObject1(){
      Object1 object1 = null;
   
      try {
         
         Session session = HibernateUtil.currentSession();
         ObjectID objectId= new ObjectID(1,2,3);
         object1 = (Object1)session.load(Object1.class, objectId);
         
         try{session.flush();} catch (Exception except){log.warn("Unable to flush session due to : " + except.getMessage());}
      } catch (Exception ex) {
         log.error("Unable to get the list type due to " + ex.getMessage());
         throw new DBException(ex);
      }
      return object1;
   }

public class HibernateUtil {

   private static SessionFactory sessionFactory;

   public static SessionFactory getSessionFactory() {
      return sessionFactory;
   }

   public static void close() throws Exception {
      sessionFactory.close();
   }
   
   public static void closeFactory() {
      sessionFactory.close();
   }   

   public static void initInstance(String fileName) {
      try {
         Configuration config = new Configuration();
         sessionFactory = config.configure(new File(fileName)).buildSessionFactory();
      } catch (Throwable ex) {
         System.err.println("Initial SessionFactory creation failed." + ex);
         throw new ExceptionInInitializerError(ex);
      }
   }

   public static Session currentSession() {
      Session s = sessionFactory.getCurrentSession();
      
      if (!s.getTransaction().isActive()) {
         s.beginTransaction();
      }

      return s;
   }

   public static void closeSession() {
      Session s = sessionFactory.getCurrentSession();
      Connection usedConn=null;
      if (s != null && s.isOpen()) {
         if(s.getTransaction().isActive()){            
            s.clear();
         }         
         usedConn = s.close();
      }
   }
}

<hibernate-configuration>
    <session-factory>
        <property name="hibernate.cglib.use_reflection_optimizer">true</property>
        <property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property>
        <property name="hibernate.connection.password">pass/property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/db</property>
        <property name="hibernate.connection.username">user</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
   <property name="current_session_context_class">thread</property>
   <property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>

        <!-- Disable the second-level cache  -->
        <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

        <!-- Echo all executed SQL to stdout -->
        <property name="hibernate.c3p0.min_size">0</property>
   <property name="hibernate.c3p0.max_size">20</property>
   <property name="hibernate.c3p0.timeout">120</property>
   <property name="hibernate.c3p0.max_statements">0</property>

   <property name="hibernate.c3p0.acquireRetryDelay">1000</property>
   <property name="hibernate.c3p0.acquireRetryAttempts">30</property>
   <property name="hibernate.c3p0.breakAfterAcquireFailure">false</property>

   <property name="hibernate.c3p0.automaticTestTable">test_connection_table</property>
   <property name="hibernate.c3p0.idleConnectionTestPeriod">360</property>
   <property name="hibernate.c3p0.testConnectionOnCheckin">true</property>
   
        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>
        <property name="format_sql">true</property>
         <property name="hibernate.generate_statistics">true</property>
         <property name="hibernate.use_sql_comments">true</property>