Class not found: com.mchange.v2.c3p0.ComboPooledDataSource,该怎么处理

Class not found: com.mchange.v2.c3p0.ComboPooledDataSource
2012-9-18 23:07:49 org.apache.catalina.core.AprLifecycleListener init
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: E:\Program Files\Myeclipse8.6\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;E:\Tomcat 7.0\bin
2012-9-18 23:07:49 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["http-bio-8080"]
2012-9-18 23:07:49 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["ajp-bio-8009"]
2012-9-18 23:07:49 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 606 ms
2012-9-18 23:07:49 org.apache.catalina.mbeans.GlobalResourcesLifecycleListener createMBeans
严重: Exception processing Global JNDI Resources
javax.naming.NamingException: Class not found: com.mchange.v2.c3p0.ComboPooledDataSource
at org.apache.naming.factory.BeanFactory.getObjectInstance(BeanFactory.java:137)
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:143)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.apache.naming.NamingContext.lookup(NamingContext.java:826)
at org.apache.naming.NamingContext.lookup(NamingContext.java:145)
at org.apache.naming.NamingContextBindingsEnumeration.nextElementInternal(NamingContextBindingsEnumeration.java:119)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:73)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:36)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:140)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:147)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:112)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.lifecycleEvent(GlobalResourcesLifecycleListener.java:84)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:389)
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:334)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:720)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:148)
at org.apache.catalina.startup.Catalina.start(Catalina.java:621)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450)
2012-9-18 23:07:49 org.apache.catalina.core.StandardService startInternal
信息: Starting service Catalina
2012-9-18 23:07:49 org.apache.catalina.core.StandardEngine startInternal
信息: Starting Servlet Engine: Apache Tomcat/7.0.22

请各位大侠帮忙查错。。。