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java.lang.ClassCastException: 	at com.sun.gjc.spi.DSManagedConnectionFactory.createManagedConnection(DSManagedConnectionFactory.java:70)	at com.sun.enterprise.connectors.ConnectorConnectionPoolAdminServiceImpl.getUnpooledConnection(ConnectorConnectionPoolAdminServiceImpl.java:1190)	at com.sun.enterprise.connectors.ConnectorConnectionPoolAdminServiceImpl.testConnectionPool(ConnectorConnectionPoolAdminServiceImpl.java:507)	at com.sun.enterprise.connectors.ConnectorRuntime.testConnectionPool(ConnectorRuntime.java:504)	at com.sun.enterprise.admin.mbeans.ResourcesMBean.pingConnectionPool(ResourcesMBean.java:1920)	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:324)	at com.sun.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:305)	at com.sun.enterprise.admin.config.BaseConfigMBean.invoke(BaseConfigMBean.java:360)	at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(DynamicMetaDataImpl.java:213)	at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(MetaDataImpl.java:220)	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:815)	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:784)	at sun.reflect.GeneratedMethodAccessor23.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:324)	at com.sun.enterprise.admin.util.proxy.ProxyClass.invoke(ProxyClass.java:54)	at $Proxy1.invoke(Unknown Source)	at com.sun.enterprise.admin.server.core.jmx.SunoneInterceptor.invoke(SunoneInterceptor.java:272)	at com.sun.enterprise.tools.admingui.util.MBeanUtil.invoke(MBeanUtil.java:148)	at com.sun.enterprise.tools.admingui.util.MBeanUtil.invoke(MBeanUtil.java:46)	at com.sun.enterprise.tools.admingui.handlers.CommonHandlers.invokeMBean(CommonHandlers.java:123)	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:324)	at com.sun.enterprise.tools.guiframework.view.DescriptorViewHelper.invokeHandler(DescriptorViewHelper.java:863)	at com.sun.enterprise.tools.guiframework.view.DescriptorViewHelper.invokeHandlers(DescriptorViewHelper.java:800)	at com.sun.enterprise.tools.guiframework.view.DescriptorViewHelper.dispatchEvent(DescriptorViewHelper.java:775)	at com.sun.enterprise.tools.guiframework.view.DescriptorViewHelper.execute(DescriptorViewHelper.java:291)	at com.sun.enterprise.tools.guiframework.view.DescriptorViewBeanBase.execute(DescriptorViewBeanBase.java:192)	at com.iplanet.jato.view.RequestHandlingViewBase.handleRequest(RequestHandlingViewBase.java:308)	at com.iplanet.jato.view.ViewBeanBase.dispatchInvocation(ViewBeanBase.java:802)	at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandlerInternal(ViewBeanBase.java:740)	at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandlerInternal(ViewBeanBase.java:760)	at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandler(ViewBeanBase.java:571)	at com.iplanet.jato.ApplicationServletBase.dispatchRequest(ApplicationServletBase.java:957)	at com.iplanet.jato.ApplicationServletBase.processRequest(ApplicationServletBase.java:615)	at com.sun.enterprise.tools.guiframework.view.BaseServlet.processRequest(BaseServlet.java:186)	at com.iplanet.jato.ApplicationServletBase.doPost(ApplicationServletBase.java:473)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:767)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)	at sun.reflect.GeneratedMethodAccessor68.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:324)	at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)	at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)	at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)	at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)	at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)	at java.security.AccessController.doPrivileged(Native Method)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)	at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)	at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:189)	at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doProcess(ProcessorTask.java:604)	at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:475)	at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:371)	at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:264)	at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:281)	at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:83)