Proxool遇到怪异的问题

应该说研究proxool也有一段时间了，今天碰到怪事情，不知道大家遇到过没有？！
以前一直是用mysql，spring里面配置proxool数据源bean的方式运行的很正常。以下是我再spring中配置的数据源bean


<bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource">
      <property name="alias">
          <value>magice</value>
      </property>
      <property name="driver">
          <value>com.mysql.jdbc.Driver</value>
      </property>
      <property name="driverUrl">  
          <value>jdbc:mysql://localhost:3306/spring?useUnicode=true&amp;characterEncoding=GBK</value>
      </property>
      <property name="user">
          <value>root</value>
      </property>
      <property name="password">
          <value>1234</value>
      </property>
      <property name="minimumConnectionCount">
          <value>20</value>
      </property>
      <property name="maximumConnectionCount">
          <value>150</value>
      </property>
      <property name="maximumConnectionLifetime">
          <value>60000</value>
      </property>
      <property name="houseKeepingTestSql">
          <value>select CURRENT_DATE</value>
      </property>
    </bean>

可是这几天一个新的项目要放置到oracle上面去，于是我先用xml配置方法配置了一次，结果是配置成功，admin页面也可以正常的看到。以下是proxool.xml配置文件


<something-else-entirely>
  <proxool>
    <alias>magice</alias>
    <driver-url>jdbc:oracle:thin:@192.168.1.169:1521:eduqt</driver-url>
    <driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
    <driver-properties>
      <property name="user" value="root"/>
      <property name="password" value="root"/>
    </driver-properties>
    <minimum-connection-count>6</minimum-connection-count>
    <maximum-connection-count>20</maximum-connection-count>

    <house-keeping-test-sql>select sysdate from DUAL</house-keeping-test-sql>
  </proxool>
</something-else-entirely>

一切正常，可是当我按照spring数据源bean的方式配置的时候，结果后台报错说获取不到连接。以下是代码


<bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource">
      <property name="alias">
          <value>magice</value>
      </property>
      <property name="driver">
          <value>oracle.jdbc.driver.OracleDriver</value>
      </property>
      <property name="driverUrl">  
          <value>jdbc:oracle:thin:@192.168.1.169:1521:eduqt</value>
      </property>
      <property name="user">
          <value>root</value>
      </property>
      <property name="password">
          <value>root</value>
      </property>
      <property name="minimumConnectionCount">
          <value>6</value>
      </property>
      <property name="maximumConnectionCount">
          <value>20</value>
      </property>      
      <property name="houseKeepingTestSql">
          <value>select sysdate from DUAL</value>
      </property>
    </bean>

这到底是怎么会是啊？！