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SAP NetWeaver Application Server 7.10 / AS Java 7.10 Internal Server Error

i received the following error with every webdynpro application including the SAP NetWeaver Administrator or the System Information, User Administration

the following exception appears in every request to any webdynpro application

do you have any idea?

com.sap.engine.services.servlets_jsp.client.RequestInfoServer#sap.com/tcwddispwda#com.sap.engine.services.servlets_jsp.client.RequestInfoServer#J2EE_GUEST#4052##n.a.##0f1333502f9611dec4a1da6baddafd03#HTTP Worker [49]##0#0#Error##Plain###Processing HTTP request to servlet [dispatcher] finished with error. The error is: com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Failed to retrieve client for current request. Causing exception is nested.

at com.sap.tc.webdynpro.clientserver.task.Task.getClient(Task.java:493)

at com.sap.tc.webdynpro.serverimpl.wdc.um.ClientUserFactory.checkAuthentication(ClientUserFactory.java:200)

at com.sap.tc.webdynpro.serverimpl.core.um.AbstractClientUserFactory$1.checkAuthentication(AbstractClientUserFactory.java:151)

at com.sap.tc.webdynpro.services.sal.um.api.WDClientUser.checkAuthentication(WDClientUser.java:214)

at com.sap.tc.webdynpro.clientserver.session.RequestManager.checkAuthentication(RequestManager.java:681)

at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:212)

at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.delegateToRequestManager(AbstractExecutionContextDispatcher.java:205)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.DispatchHandlerForRequestManager.doService(DispatchHandlerForRequestManager.java:38)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.AbstractDispatchHandler.service(AbstractDispatchHandler.java:116)

at com.sap.engine.services.servlets_jsp.server.deploy.impl.module.IRequestDispatcherImpl.dispatch(IRequestDispatcherImpl.java:93)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.ExecutionContextDispatcher.dispatchToRequestManager(ExecutionContextDispatcher.java:140)

at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.dispatch(AbstractExecutionContextDispatcher.java:93)

at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.dispatch(AbstractExecutionContextDispatcher.java:105)

at com.sap.tc.webdynpro.serverimpl.core.AbstractDispatcherServlet.doContent(AbstractDispatcherServlet.java:87)

at com.sap.tc.webdynpro.serverimpl.core.AbstractDispatcherServlet.doGet(AbstractDispatcherServlet.java:54)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)

at com.sap.engine.services.servlets_jsp.server.Invokable.invoke(Invokable.java:66)

at com.sap.engine.services.servlets_jsp.server.Invokable.invoke(Invokable.java:32)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:431)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:289)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:387)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:376)

at com.sap.engine.services.servlets_jsp.filters.ServletSelector.process(ServletSelector.java:85)

at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)

at com.sap.engine.services.servlets_jsp.filters.ApplicationSelector.process(ApplicationSelector.java:160)

at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)

at com.sap.engine.services.httpserver.filters.WebContainerInvoker.process(WebContainerInvoker.java:67)

at com.sap.engine.services.httpserver.chain.HostFilter.process(HostFilter.java:9)

at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)

at com.sap.engine.services.httpserver.filters.ResponseLogWriter.process(ResponseLogWriter.java:60)

at com.sap.engine.services.httpserver.chain.HostFilter.process(HostFilter.java:9)

at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)

at com.sap.engine.services.httpserver.filters.DefineHostFilter.process(DefineHostFilter.java:27)

at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)

at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)

at com.sap.engine.services.httpserver.filters.MonitoringFilter.process(MonitoringFilter.java:29)

at com.sap.engine.services.httpserver.chain.ServerFilter.process(ServerFilter.java:12)

at com.sap.engine.services.httpserver.chain.AbstractChain.process(AbstractChain.java:71)

at com.sap.engine.services.httpserver.server.Processor.chainedRequest(Processor.java:309)

at com.sap.engine.services.httpserver.server.Processor$FCAProcessorThread.run(Processor.java:222)

at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)

at java.security.AccessController.doPrivileged(Native Method)

at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:152)

at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:181)

Caused by: com.sap.tc.webdynpro.services.cal.core.exceptions.WDClientException: Found no client for parameter: null, useragent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)

at com.sap.tc.webdynpro.clientserver.cal.ClientInspector.findClientContainer(ClientInspector.java:217)

at com.sap.tc.webdynpro.clientserver.cal.ClientInspector.getClient(ClientInspector.java:106)

at com.sap.tc.webdynpro.clientserver.task.Task.getClient(Task.java:491)

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4 Answers

  • author's profile photo Former Member
    Former Member
    Posted on Apr 23, 2009 at 08:07 PM

    Did you check network connectivity and you can monitor few things via JCMON too.

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  • Posted on Jul 07, 2009 at 03:57 PM

    Hi,

    I also faced the same issue.

    My error log as shown below, pointed me to Mozilla....

    **************************************

    Caused by: com.sap.tc.webdynpro.services.cal.core.exceptions.WDClientException: Found no client: clientNameReqParam=null, clientNameAppParam=null, useragent=Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618; InfoPath.2

    **************************************

    I remember that i used firefox earlier.

    So, when i started using firefox, it started working perfectly fine.

    Although this does not solve the original problem, i hope it helps as a quick solution.

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  • author's profile photo Former Member
    Former Member
    Posted on Jul 09, 2009 at 01:49 PM

    Hi,

    I'm getting the same error message on an AS Java 7.00 with IE 7.0

    "com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Found no client for parameter: null"

    And yes, the workaround with Firefox also works for me, but it would be good to get it to work also with IE.

    Did anyone found a solution yes?

    Thank you

    Markus

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  • author's profile photo Former Member
    Former Member
    Posted on Jul 18, 2009 at 10:53 AM

    Hi,

    As for User administration you can find one note by typing the exact problem, If you have the access to service market place.

    If you do not have the access please let me know I will update you with the note.

    Regards

    Naveen

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