tomcat报错：DBCP object created 2006-01-10 16:41:33 by the following code was never closed，是什么原因呀

Question

我的WEB服务用的是TOMCAT5.0，数据库用的是SQL2000，在TOMCAT里配置了数据库连接池，server.xml配置如下：
<Host name="www.xxx.com" debug="0" appBase="webapps"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">
<Logger className="org.apache.catalina.logger.FileLogger"
directory="webapps/lybbs/log" prefix="ur-time_log." suffix=".txt"
timestamp="true"/><Context path="" docBase="ftp" debug="0" reloadable="true">
<Resource name="ftp/connectDB" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="ftp/connectDB">
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>100</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>
<parameter>
<name>removeAbandoned</name>
<value>true</value>
</parameter>
<parameter>
<name>removeAbandonedTimeout</name>
<value>60</value>
</parameter>
<parameter>
<name>logAbandoned</name>
<value>true</value>
</parameter>
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>username</name>
<value>admin</value>
</parameter>
<parameter>
<name>password</name>
<value></value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>com.microsoft.jdbc.sqlserver.SQLServerDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:microsoft:sqlserver://127.0.0.1:1433;DatebaseName=ftp</value>
</parameter>
</ResourceParams>
</Context>
</Host>
网站刚运行正常，外面能访问网站，但运行一段时间，TOMCAT就会报错，但网站也能运行，就是速度比以前慢了，错误信息如下：
DBCP object created 2006-01-10 16:41:33 by the following code was never closed:
java.lang.Exception
at org.apache.commons.dbcp.AbandonedTrace.setStackTrace(AbandonedTrace.j
ava:157)
at org.apache.commons.dbcp.AbandonedObjectPool.borrowObject(AbandonedObj
ectPool.java:76)
at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSo
urce.java:95)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource
.java:540)
at com.bnuep.DatabaseConn.<init>(DatabaseConn.java:19)
at org.apache.jsp.ftpsite.searchAllSources_jsp._jspService(searchAllSour
ces_jsp.java:66)
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:2
92)
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(Appl
icationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:157)
at net.lybbs.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEnco
dingFilter.java:170)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(Standard
ContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:117)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:16
0)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ssConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java
:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
ool.java:683)
at java.lang.Thread.run(Thread.java:595)
不知是什么原因，请教各位了，谢谢！！！

Answer 1

这个大概是起用removeAbandoned引起的最好的解决的办法就是换db池， 不用org.apache.commons.dbcp.BasicDataSourceFactory

Answer 2

用这个试试:
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSource</value>

Answer 3

用<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSource</value>这个配置，不能连接到数据库，

Answer 4

在网上找了好半天,没有找到在tomcat下配置C3P0连接池的,有谁知道呀