频繁操作 出现的连接池无法获得 大家帮忙分析下

org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object
at org.apache.tomcat.dbcp.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:104)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
at com.xinhe.db.DBpool.getConnection(DBpool.java:23)
at com.xinhe.db.SubFileCategoryDAO.<init>(SubFileCategoryDAO.java:28)
at com.xinhe.action.FileCategoryAction.<init>(FileCategoryAction.java:38)
at sun.reflect.GeneratedConstructorAccessor27.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:123)
at com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:154)
at com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java:143)
at com.opensymphony.xwork2.ObjectFactory.buildAction(ObjectFactory.java:113)
at com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:275)
at com.opensymphony.xwork2.DefaultActionInvocation.init(DefaultActionInvocation.java:365)
at com.opensymphony.xwork2.DefaultActionInvocation.access$000(DefaultActionInvocation.java:38)
at com.opensymphony.xwork2.DefaultActionInvocation$1.doProfiling(DefaultActionInvocation.java:83)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.<init>(DefaultActionInvocation.java:74)
at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:189)
at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:41)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:494)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:422)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.util.NoSuchElementException: Timeout waiting for idle object
at org.apache.tomcat.dbcp.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:958)
at org.apache.tomcat.dbcp.dbcp.AbandonedObjectPool.borrowObject(AbandonedObjectPool.java:84)
at org.apache.tomcat.dbcp.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:96)
... 35 more快速频繁的操作 系统 出现 上面的异常
我数据源配置如下  用的是TOMCAT6.0
<Resource name="jdbc/DBpool"   
  auth="Container"
  type="javax.sql.DataSource"  
  username="root"
  password="root"
  maxIdle="50"
  maxAction="100"
  maxWait="5000"
  driverClassName="com.mysql.jdbc.Driver" 
  removeAbandoned="true"   
  removeAbandonedTimeout="30"
  url="jdbc:mysql://localhost:3306/oasystem?useUnicode=true&amp;characterEncoding=UTF-8"/>
 主要原因  获得不到连接了 我调用的连接都写了关闭
高手帮我分析分析下 什么原因   具体有上面方法解决  先谢了~~！