spring+hibernate的c3p0 连接池配置

网上关于C3P0在spring中的配置，几乎没有完全正确的（至少我还没发现）。查了c3p0的文档，又试验过N次。得出如下配置是正确的：

<!-- com.mchange.v2.c3p0.ComboPooledDataSource  -->
 <bean id="dataSource"
  class="com.mchange.v2.c3p0.ComboPooledDataSource">
  <property name="driverClass"
   value="oracle.jdbc.driver.OracleDriver">
  </property>
  <property name="jdbcUrl"
   value="jdbc:oracle:thin:@127.0.0.1:1521:db">
  </property>
  <property name="user" value="123"></property>
  <property name="password" value="123"></property>
  <property name="minPoolSize"><value>1</value></property>
  <property name="maxPoolSize"><value>20</value></property>
  <property name="maxIdleTime"><value>1800</value></property>
  <property name="acquireIncrement"><value>2</value></property>
  <property name="maxStatements"><value>0</value></property>
  <property name="initialPoolSize"><value>2</value></property>
  <property name="idleConnectionTestPeriod"><value>1800</value></property>
  <property name="acquireRetryAttempts"><value>30</value></property>
  <property name="breakAfterAcquireFailure"><value>true</value></property>
  <property name="testConnectionOnCheckout"><value>false</value></property>
 </bean>
<!--  
 <bean id="dataSource"
  class="org.apache.commons.dbcp.BasicDataSource">
  <property name="driverClassName"
   value="oracle.jdbc.driver.OracleDriver">
  </property>
  <property name="url"
   value="jdbc:oracle:thin:@221.232.148.68:1521:starmap">
  </property>
  <property name="username" value="htgis"></property>
  <property name="password" value="htgis"></property>
 </bean>
-->
 <bean id="sessionFactory"
  class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
  <property name="dataSource">
   <ref bean="dataSource" />
  </property>
  <property name="hibernateProperties">
   <props>
    <prop key="hibernate.dialect">
     org.hibernate.dialect.Oracle9Dialect
    </prop>
       <prop key="hibernate.show_sql">true</prop>
       <prop key="hibernate.generate_statistics">true</prop>
                <prop key="hibernate.connection.release_mode">auto</prop>                     
                <prop key="hibernate.autoReconnect">true</prop>
                <prop key="hibernate.cglib.use_reflection_optimizer">true</prop>
    <!-- 
    <prop key="hibernate.c3p0.min_size">5</prop>
                <prop key="hibernate.c3p0.max_size">20</prop>
                <prop key="hibernate.c3p0.timeout">1800</prop>
                <prop key="hibernate.c3p0.max_statements">50</prop>   
    <prop key="hibernate.show_sql">false</prop>-->
   </props>
  </property>
  <property name="mappingResources">
   <list>
    <value>ht/gisoa/entity/CmppSubmitCache.hbm.xml</value>
    <value>ht/gisoa/entity/CmppDeliver.hbm.xml</value>
    <value>ht/gisoa/entity/CmppSubmit.hbm.xml</value>
    <value>ht/gisoa/entity/CmppReport.hbm.xml</value>
    <value>ht/gisoa/entity/SGpstraceinfo.hbm.xml</value>
    <value>ht/gisoa/entity/SDeviceinfo.hbm.xml</value>
    <value>ht/gisoa/entity/SLbstraceinfo.hbm.xml</value>
    <value>ht/gisoa/entity/Lbsschemainfo.hbm.xml</value>
   </list>
  </property>
 </bean>