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Meaning of Webview error: " caused by com.wily.isengard.message.MessageUndeliverableException"


Article ID: 103086


Updated On:


CA Application Performance Management Agent (APM / Wily / Introscope) INTROSCOPE


The following error appears in the log file IntroscopeWebView.log on the MOM server (V10.5): 

...[ERROR] [WebView.EventPump] 

at com.wily.introscope.ui.dataviewer.AAsyncMetricDataDataProviderTracker$TopNDataCallback$ 
at com.wily.util.event.EventPump$2.IEventMarkedRunnable_run( 
at com.wily.util.event.EventPump.immediateRun( 
at com.wily.util.event.EventPump.access$7( 
at com.wily.util.event.EventPump$Posting.deliver( 
at com.wily.util.event.EventPump$ 
Caused by: com.wily.isengard.message.MessageUndeliverableException 
at com.wily.isengard.messageprimitives.service.MessageServiceClient.sendRequest( 
at com.wily.isengard.messageprimitives.service.MessageServiceClient.invoke( 
at com.sun.proxy.$Proxy49.executeAsyncQuery(Unknown Source) 
at com.wily.introscope.ui.dataviewer.AAsyncMetricDataDataProviderTracker$TopNDataCallback$ 
... 5 more 

There are no impacts deceled so far on the product and the connection on the application is fine. 

The closest error referenced on the support site is here: 
however the cause is slightly different: 

caused by: com.wily.introscope.spec.server.beans.session.IllegalSessionException 
While we have this: 
Caused by: com.wily.isengard.message.MessageUndeliverableException 


The error is mainly linked to slowness in Webview. 


APM 10.5

All Platforms


To improve this Webview slowness issue, increase Webview heap size. 
By default (IntroscopeWebview.lax) is set to 
"-Xms128m -Xmx512m -Djava.awt.headless=false -Dsun.java2d.noddraw=true". 
Increase the values -Xms and -Xmx to help prevent the issue. 

Additional Information

There is no lack of functionality and you can safely ignore this error.