在线求助   Tomcat如何自动关闭数据库连接池的连接

我的服务器是Tomcat   5.0.28,其中数据库连接池的配置文件如下：
<Context   debug= "1 "   displayName= "WebRoot "   docBase= "WebRoot "   path= "/ "   reloadable= "true ">
    <Resource   auth= "Container "   name= "jdbc/connectDB "   type= "javax.sql.DataSource "/>
    <ResourceParams   name= "jdbc/connectDB ">
        <parameter>
            <name> factory </name>
            <value> org.apache.commons.dbcp.BasicDataSourceFactory </value>
        </parameter>
        <parameter>
            <name> url </name>
            <value> jdbc:microsoft:sqlserver://localhost:1433;databasename=zgws </value>
        </parameter>
        <parameter>
            <name> maxWait </name>
            <value> 5000 </value>
        </parameter>
        <parameter>
            <name> maxActive </name>
            <value> 200 </value>
        </parameter>
        <parameter>
            <name> driverClassName </name>
            <value> com.microsoft.jdbc.sqlserver.SQLServerDriver </value>
        </parameter>
        <parameter>
            <name> maxIdle </name>
            <value> 20 </value>
        </parameter>
        <parameter>
            <name> username </name>
            <value> sa </value>
        </parameter>
        <parameter>
            <name> password </name>
            <value> ****** </value>
        </parameter>
        <parameter>
            <name> removeAbandoned </name>
            <value> true </value>
        </parameter>
        <parameter>
            <name> removeAbandonedTimeout </name>
            <value> 10 </value>
        </parameter>
        <parameter>
            <name> logAbandoned </name>
            <value> true </value>
        </parameter>
    </ResourceParams>
</Context>
在这个配置文件中removeAbandoned设定了自动关闭连接，但是Tomcat服务器没有自动关闭连接，当连接数超过200个时，报如下的错误：
DBCP   object   created   2007-06-07   11:01:28   by   the   following   code   was   never   closed:
java.lang.Exception
at   org.apache.commons.dbcp.AbandonedTrace.init(AbandonedTrace.java:96)
at   org.apache.commons.dbcp.AbandonedTrace. <init> (AbandonedTrace.java:79)
at   org.apache.commons.dbcp.DelegatingStatement. <init> (DelegatingStatement.java:60)
at   org.apache.commons.dbcp.DelegatingConnection.createStatement(DelegatingConnection.java:173)
at   org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.createStatement(PoolingDataSource.java:209)
at   operate.DBOperate.PoolConnect(DBOperate.java:143)
at   operate.DBOperate.Connect(DBOperate.java:79)
at   dao.init.index.IndexINIT. <init> (IndexINIT.java:31)
at   org.apache.jsp.news.news_jsp._jspService(news_jsp.java:361)
at   org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at   org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at   tools.EncodingFilter.doFilter(EncodingFilter.java:55)
at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at   org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at   org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at   org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at   org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at   org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at   org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at   org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at   org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at   org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at   org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at   org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at   org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at   org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at   org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at   org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at   org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at   org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at   org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at   org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at   org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at   org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at   java.lang.Thread.run(Thread.java:595)

报错完之后数据库的连接才被关闭，然后连接数目一直增加，当再次超过200个时就又报上面的错误，这样情况重复出现，当Tomcat运行两天左右之后，Tomcat就不能服务，网站就打不开了，请高手指点，怎么让Tomcat自动关闭连接池的连接！