我在 oracle weblogic 服务器上部署了一个 JSF 应用程序。服务器在加载时崩溃，我开始使用 J-meter 进行性能测试，它给了我关于哪个页面加载失败的信息。我开始使用单个用户进行调试，并从管理日志中获得了以下提要：
管理服务器日志
####<Dec 7, 2012 2:53:34 PM GMT+05:30> <Error> <HTTP> <CDCUBPEDB> <AdminServer> <[STUCK]
ExecuteThread: '18' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>>
<> <> <1354872214767> <BEA-101107> <[ServletContext@6958453[app:dummyapp module:/app
path:/app spec-version:1.0]] Problem occurred while serving the error page.
java.lang.IllegalStateException: parent is null?
at javax.faces.webapp.UIComponentTag.findComponent(UIComponentTag.java:545)
at javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:315)
at org.apache.myfaces.taglib.core.ViewTag.doStartTag(ViewTag.java:73)
at jsp_servlet._pages.__errordisplay._jspService(__errordisplay.java:94)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper
.java:227)
at
weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:183)
at
weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java
:523)
at
weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalCo
ntextImpl.java:419)
at
org.apache.myfaces.tomahawk.application.jsp.JspTilesViewHandlerImpl.dispatch(JspTilesVie
wHandlerImpl.java:236)
at
org.apache.myfaces.tomahawk.application.jsp.JspTilesViewHandlerImpl.renderView(JspTilesV
iewHandlerImpl.java:222)
at
org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:
41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
at
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper
.java:227)
at
weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:183)
at
weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java
:523)
at
weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at
weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:720)
at
weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:591)
at weblogic.servlet.internal.ErrorManager.handleException(ErrorManager.java:150)
at
weblogic.servlet.internal.WebAppServletContext.handleThrowableFromInvocation(WebAppServl
etContext.java:2348)
at
weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2190)
at
weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:176)
>
当负载增加时，它会在控制台开始时显示“您的会话已过期”。一两个用户有时会很好，但有时仍然会在浏览器和控制台上显示：连接超时”，它说：
Problem occurred while serving the error page.
javax.servlet.ServletException: Connection reset by peer: socket write error
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:154)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:183)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:523)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at weblogic.servlet.internal.ForwardAction.run(ForwardAction.java:22)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.internal.ErrorManager.handleException(ErrorManager.java:144)
at weblogic.servlet.internal.WebAppServletContext.handleThrowableFromInvocation(WebAppServletContext.java:2348)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2190)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:176)
Caused By: javax.faces.FacesException: Connection reset by peer: socket write error
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:43)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:183)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:523)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at weblogic.servlet.internal.ForwardAction.run(ForwardAction.java:22)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.internal.ErrorManager.handleException(ErrorManager.java:144)
at weblogic.servlet.internal.WebAppServletContext.handleThrowableFromInvocation(WebAppServletContext.java:2348)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2190)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:176)
Caused By: java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at weblogic.servlet.internal.ChunkOutput.writeChunkNoTransfer(ChunkOutput.java:591)
at weblogic.servlet.internal.ChunkOutput.writeChunks(ChunkOutput.java:540)
at weblogic.servlet.internal.ChunkOutput.flush(ChunkOutput.java:427)
at weblogic.servlet.internal.ChunkOutputWrapper.flush(ChunkOutputWrapper.java:188)
at weblogic.servlet.jsp.JspWriterImpl.flush(JspWriterImpl.java:99)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlResponseWriterImpl.endDocument(HtmlResponseWriterImpl.java:160)
at org.apache.myfaces.taglib.core.ViewTag.doEndTag(ViewTag.java:103)
at jsp_servlet._pages.__errordisplay._jspService(__errordisplay.java:149)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:183)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:523)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:419)
at org.apache.myfaces.tomahawk.application.jsp.JspTilesViewHandlerImpl.dispatch(JspTilesViewHandlerImpl.java:236)
at org.apache.myfaces.tomahawk.application.jsp.JspTilesViewHandlerImpl.renderView(JspTilesViewHandlerImpl.java:222)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:183)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:523)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at weblogic.servlet.internal.ForwardAction.run(ForwardAction.java:22)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.internal.ErrorManager.handleException(ErrorManager.java:144)
at weblogic.servlet.internal.WebAppServletContext.handleThrowableFromInvocation(WebAppServletContext.java:2348)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2190)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:176)
>