PK78743: Invoking an MBean that does not have type key-property results in a NullPointerException.

Fixes are available

APAR status

Closed as program error.

Error description

NullPointerException when customer is trying to invoke
operation on his own JMX custom mbean through MBean proxy and
"type" key-property is not defined in custom mbean's
descriptor.xml.

[1/15/09 11:45:14:625 IST] 00000050 SOAPConnector 3 Caught
exception java.lang.NullPointerException
at
com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.ja
va:1090)
at
com.ibm.ws.security.util.AccessController.doPrivileged(AccessCon
troller.java:118)
at
com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.j
ava:975)
at
com.ibm.ws.management.connector.AdminServiceDelegator.invoke(Adm
inServiceDelegator.java:139)
at sun.reflect.GeneratedMethodAccessor23.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
AccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at
com.ibm.ws.management.connector.soap.SOAPConnector.invoke(SOAPCo
nnector.java:351)
at
com.ibm.ws.management.connector.soap.SOAPConnector.service(SOAPC
onnector.java:205)
at
com.ibm.ws.management.connector.soap.SOAPConnection.handleReques
t(SOAPConnection.java:55)
at
com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnecti
on.java:680)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:484)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)

Local fix

To ensure that Custom MBean descriptor XML file has the
key-property "type", this APAR PK78743 was introduce for Custom
MBean where client forgot to include the type in descriptor XML
file.

<MBean type="SnoopMBean"

E.g

Descriptor XML will be like this:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE MBean SYSTEM "MbeanDescriptor.dtd">
<MBean type="SnoopMBean"
version="5.0"
platform="dynamicproxy"
description="Sample SnoopMBean to be initialized inside an
EJB.">

Problem summary

****************************************************************
* USERS AFFECTED:  All users of WebSphere Application Server   *
****************************************************************
* PROBLEM DESCRIPTION: Invoking an MBean that does not have    *
*                      type key-property results in a          *
*                      NullPointerException.                   *
****************************************************************
* RECOMMENDATION:  Custom MBean descriptor needs to have       *
*                  MBean key-properties (Eg. type, name,       *
*                  cell, node, process) especially if customer *
*                  environment has multiple Java Virtual       *
*                  Machines (JVM) in place.                    *
*                                                              *
*                  If key properties are not set in the        *
*                  MBean ObjectName, the MBean can still be    *
*                  registered in the MBeanServer, but no       *
*                  distributed services provided by WebSphere  *
*                  will be usable for this MBean. Without      *
*                  these key properties the MBean will only    *
*                  be accessible within the JVM where it is    *
*                  registered.                                 *
*                                                              *
*                  Key properties are also useful for faster   *
*                  MBean querying.                             *
****************************************************************
ApplicationServer trace.log showed:
[1/15/09 11:45:14:671 IST] 0000004e SOAPConnector <
handleAdminFault Exit
java.lang.NullPointerException
at
com.ibm.ws.management.connector.soap.SOAPConnectorClient.handleA
dminFault(SOAPConnectorClient.java:811)
at
com.ibm.ws.management.connector.soap.SOAPConnectorClient.invokeT
emplate(SOAPConnectorClient.java:779)
at
com.ibm.ws.management.connector.soap.SOAPConnectorClient.invoke(
SOAPConnectorClient.java:575)
at
com.ibm.ws.management.connector.soap.SOAPConnectorClient.invoke(
SOAPConnectorClient.java:402)
at $Proxy18.invoke(Unknown Source)
at
com.ibm.ws.management.AdminClientImpl.invoke(AdminClientImpl.jav
a:205)


And DeploymentManager trace.log showed the actual problem is
in AdminServiceImpl.java code line 1090:
[1/15/09 11:45:14:625 IST] 00000050 SOAPConnector 3 Caught
exception
java.lang.NullPointerException
at
com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.ja
va:1090)
at
com.ibm.ws.security.util.AccessController.doPrivileged(AccessCon
troller.java:118)
at
com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.j
ava:975)
at
com.ibm.ws.management.connector.AdminServiceDelegator.invoke(Adm
inServiceDelegator.java:139)
at sun.reflect.GeneratedMethodAccessor23.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
AccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at
com.ibm.ws.management.connector.soap.SOAPConnector.invoke(SOAPCo
nnector.java:351)
at
com.ibm.ws.management.connector.soap.SOAPConnector.service(SOAPC
onnector.java:205)
at
com.ibm.ws.management.connector.soap.SOAPConnection.handleReques
t(SOAPConnection.java:55)
at
com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnecti
on.java:680)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:484)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1473)

Problem conclusion

Fixed the code to tolerate MBeans with no type key-property.
The fix for this APAR is currently targeted for inclusion in
fixpack 6.0.2.35, 6.1.0.25 and 7.0.0.5. Please refer to the
recommended updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PK78743
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
61A
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-01-15
Closed date
2009-02-06
Last modified date
2009-09-08

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
WEBS APP SERV N
Fixed component ID
5724H8800

Applicable component levels

R60A PSY
UP
R60H PSY
UP
R60I PSY
UP
R60P PSY
UP
R60S PSY
UP
R60W PSY
UP
R60Z PSY
UP
R61A PSY
UP
R61H PSY
UP
R61I PSY
UP
R61P PSY
UP
R61S PSY
UP
R61W PSY
UP
R61Z PSY
UP
R700 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.1","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
29 December 2021

Tips

PK78743: Invoking an MBean that does not have type key-property results in a NullPointerException.

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R60A PSY

R60H PSY

R60I PSY

R60P PSY

R60S PSY

R60W PSY

R60Z PSY

R61A PSY

R61H PSY

R61I PSY

R61P PSY

R61S PSY

R61W PSY

R61Z PSY

R700 PSY

Document Information

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