struts下连接oracle数据库异常，如何配置？

Question

如果连接池配置正确(如下述内容)，那应该是代码中使用过的Connection没有close掉(Result/Statement/...都应该close掉)。...
<data-sources>
 <data-source type="org.apache.commons.dbcp.BasicDataSource">
  <set-property
    property="driverClassName"
    value="oracle.jdbc.driver.OracleDriver" />
  <set-property
    property="url"
    value="jdbc:oracle:thin:@localhost:1521:orcl" />
  <set-property
    property="username"
    value="system" />
  <set-property
    property="password"
    value="manager" />
  <set-property
    property="maxActive"
    value="100" />
  <set-property
    property="maxWait"
    value="5000" />
  <set-property
    property="defaultAutoCommit"
    value="true" />
  <set-property
    property="defaultReadOnly"
    value="false" />  
 </data-source>
</data-sources>
...