<hibernate-configuration>
<session-factory>
      <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
      <property name="hibernate.connection.url">jdbc:oracle:thin:@10.1.1.1:1521:test</property>
      <property name="hibernate.connection.username">ORV5_ETL_ZAIN_KSA_D2</property>
      <property name="hibernate.connection.password">ORV5_ETL_ZAIN_KSA_D2</property>
      <property name="hibernate.connection.pool_size">10</property>
      <property name="show_sql">true</property>
      <property name="dialect">org.hibernate.dialect.OracleDialect</property>
      <property name="hibernate.hbm2ddl.auto">update</property>
      <!-- Mapping files -->
      <mapping resource="contact.hbm.xml"/>
</session-factory>
</hibernate-configuration>

public class FirstExample {
   public static void main(String[] args) {
      Session session = null;
   
      try {
         // This step will read hibernate.cfg.xml and prepare hibernate for
         // use
         System.out.println(new   Configuration().configure().buildSessionFactory());
         SessionFactory sessionFactory = new   Configuration().configure().buildSessionFactory();
         session = sessionFactory.openSession();
         System.out.println("se->"+session);
         // Create new instance of Contact and set values in it by reading
         // them from form object
         System.out.println("Inserting Record");
         Contact contact = new Contact();
         contact.setId(3);
         contact.setFirstName("Deepak");
         contact.setLastName("Kumar");
         contact.setEmail("deepak_38@yahoo.com");
         session.save(contact);
         System.out.println("Done");
      } catch (Exception e) {
         e.printStackTrace();
         //System.out.println(e.getMessage());
      } finally {
         // Actual contact insertion will happen at this step
         session.flush();
         session.close();
   
      }
   
   }
}