PQ82364: WHEN INVOKING THE PERFORMANCE SERVLET APPLICATION AFTER ENABLINGPMI WITH W502000 SERVER REGION STATS NOT RETURNED TO BROWSER.

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APAR status
Closed as program error.

Error description
After application of w502000 an error will occur if you run
the Perfservletapp.ear.  The stack trace shows:
ExtendedMessage: handleAdminFault; javax.management.RuntimeMBean
exception at
com.ibm.ws.management.connector.soap.SOAPConnectorClient.handle
AdminFault(S
at com.ibm.ws.management.connector.soap.SOAPConnectorClient
.invokeTemplate(SOAPConnectorClient.invokeTemplate(SOA
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.
invoke(SOAPConnect
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.
invoke(SOAPConnect at $Proxy0.invoke(Unknown Source)
at com.ibm.ws.management.AdminClientImpl.invoke(AdminClientImpl
at com.ibm.ws.pmi.perfServer.CollectorJMX.invoke(CollectorJMX.ja
at com.ibm.ws.pmi.perfServer.CollectorJMX.getStats(CollectorJMX.
at com.ibm.ws.pmi.perfServer.CollectorJMX.gets(CollectorJMX.java
at com.ibm.ws.pmi.perfServer.DataCache.retrieveDataFromServer(Da
at com.ibm.ws.pmi.perfServer.DataCache.getDataInOneServer(DataCa
at com.ibm.ws.pmi.perfServer.DataCache.getData(DataCache.java:32
Please note: The Server stats are not returned to the browser,
however, the node agent stats are returned to the browser in the
tests we ran in lab.
It has also been determined that TPV Tivoli Performance Viewer
does not work properly at the W502000 level.  Following are two
errors that have been reported to the lab:
PMON3008W Error connecting to appliction server
(in deployment manager)
Also the following is seen in Windows:
Java.lang.reflect.InvocationTargetException:
java.lang.NoClassDefFoundError: com
/ibm/logging/LoggerCfg at com.tivoli.jmx.utils.logging.CatUtil.
createJmxCatalog(CatUtil.java:76
Please reference cmvc defect MD18796
Local fix Problem summary
****************************************************************
* USERS AFFECTED: All users of WebSphere Application Server    *
*                 V5.0 for z/OS                                *
****************************************************************
* PROBLEM DESCRIPTION: PMI clients running on W502000 using    *
*                      certain PMI API runs into a             *
*                      NullPointerException on                 *
*                      PerfMBeanAggregationHandler's           *
*                      aggregateResults method generating a    *
*                      null result back in the response data.  *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
While using PerfServlet or other PMI clients running on W502000,
NullPointerException on PerfMBeanAggregationHandler's
aggregateResults method is hit and the client receives a result
that contains null data back. Following is a sample stacktrace
of the root cause of this failure that can be detected in the
controller of the server when getStatsArray method is invoked
from the PMI client:
 ---- Begin backtrace for nested exception
java.lang.NullPointerException
 at com.ibm.ws.pmi.dynamicproxy.PerfMBeanAggregationHandler.
   aggregateResults(PerfMBeanAggregationHandler.java:186)
 at com.ibm.ws390.management.ProxyMBeanSupport.
   mbeanInvokerSpray(ProxyMBeanSupport.java:493)
 at com.ibm.ws390.management.proxy.ServantMBeanInvokerProxy.
   invoke(ServantMBeanInvokerProxy.java(Compiled Code))
 at $Proxy5.getStatsArray(Unknown Source)
Problem conclusion
New design of the PerfMBean aggregation using a hybrid technique
to poll and push the PMI data in the controller and servant will
replace the PerfMBeanAggregationHandler class running in the
controller that causes this NullPointerException.

APAR PQ82364 is associated with SERVICE LEVEL W502001 of
WebSphere Application Server V5.0 for z/OS.
Temporary fix Comments
APAR information
APAR number PQ82364
Reported component name WEBSPHERE FOR Z
Reported component ID 5655I3500
Reported release 500
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2003-12-17
Closed date 2004-01-24
Last modified date 2004-02-04

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
BBOUBINF          

Publications Referenced

Fix information
Fixed component name WEBSPHERE FOR Z
Fixed component ID 5655I3500

Applicable component levels
R500 PSY UQ84418    UP04/01/30 P F401

  Fix is available
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Document Information


Current web document: swg1PQ82364.html
Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server for z/OS
Operating system(s):
Software version: 500
Software edition:
Reference #: PQ82364
IBM Group: Software Group
Modified date: Feb 4, 2004