使用Common dbutils时，出错了，希望大家帮忙解决一下

使用环境是，MYeclipse8.5+tomcat,在tomcat里配置了数据库池，配置数据库池的文件没错，
我所写的代码：SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String param[] = { StringUtil.filterHtml(name), StringUtil.filterHtml(request.getParameter("email")),
StringUtil.filterHtml(request.getParameter("phone")), StringUtil.filterHtml(title),request.getParameter("content"), sdf.format(new java.util.Date()) };

Context initContext = new InitialContext();
DataSource ds = (DataSource) initContext.lookup("java:/comp/env/jdbc/oracleds");
QueryRunner qr = new QueryRunner(ds);
result = qr.update(sql, param);以上是实现插入数据时的代码，
下面是检索数据的代码：
Context context = new InitialContext();
DataSource ds = (DataSource) context.lookup("java:/comp/env/jdbc/oracleds");
QueryRunner qr = new QueryRunner(ds);
List list = qr.query(sql,new MapListHandler());
检索时没问题，当执行上面插入数据的代码时，出现如下错误：
java.lang.AbstractMethodError: oracle.jdbc.driver.T4CPreparedStatement.getParameterMetaData()Ljava/sql/ParameterMetaData;
at org.apache.tomcat.dbcp.dbcp.DelegatingPreparedStatement.getParameterMetaData(DelegatingPreparedStatement.java:223)
at org.apache.commons.dbutils.QueryRunner.fillStatement(QueryRunner.java:176)
at org.apache.commons.dbutils.QueryRunner.update(QueryRunner.java:595)
at org.apache.commons.dbutils.QueryRunner.update(QueryRunner.java:655)
at com.guestbook.AddMessageServlet.doPost(AddMessageServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)