PK77235: WHILE GENERATING A HEAPDUMP USING THE WSADMIN SCRIPT OR JYTHON THE MEMORY DUMP FAILS THROWING JAVA.LANG.NULLPOINTEREXCEPTION

Fixes are available

APAR status

Closed as program error.

Error description

Generation of a heapdump using the wsadmin script fails throwing
a NullPointerException.


/usr/IBM/WebSphere/AppServer/bin/wsadmin.sh  -profileName
AppSrv01 - lang jython -f memDump.jython

"WASX7209I: Connected to process "dmgr" on node test01bManager
using
SOAP connector;  The type of process is: DeploymentManager
WASX7017E: Exception received while running file "/tmp/memDump.
200808051328.jython"; exception information: javax.management.
RuntimeMBeanException
java.lang.NullPointerException: java.lang.NullPointerException"

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of WebSphere Application Server   *
*                  v6.0.2 and V7.0                             *
****************************************************************
* PROBLEM DESCRIPTION: Invoking JVMMBean operation             *
*                      generateHeapDump can get                *
*                      NullPointerException.                   *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
wsadmin.traceout log showed:
javax.management.RuntimeMBeanException: null nested runtime
exception is java.lang.NullPointerException
java.lang.NullPointerException
at
com.ibm.ws.management.component.JVMMBean.generateHeapDump(JVMMBe
an.java:273)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
Impl.java(Compiled Code))
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
Impl.java(Compiled Code))
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
AccessorImpl.java(Compiled Code))
at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
at
javax.management.modelmbean.RequiredModelMBean.invokeMethod(Requ
iredModelMBean.java(Compiled Code))
at
javax.management.modelmbean.RequiredModelMBean.invoke(RequiredMo
delMBean.java(Compiled Code))
at
mx4j.server.interceptor.InvokerMBeanServerInterceptor.invoke(Inv
okerMBeanServerInterceptor.java(Compiled Code))
at
mx4j.server.interceptor.DefaultMBeanServerInterceptor.invoke(Def
aultMBeanServerInterceptor.java(Inlined Compiled Code))
at
mx4j.server.interceptor.SecurityMBeanServerInterceptor.invoke(Se
curityMBeanServerInterceptor.java(Compiled Code))
at
mx4j.server.interceptor.DefaultMBeanServerInterceptor.invoke(Def
aultMBeanServerInterceptor.java(Compiled Code))
at
mx4j.server.interceptor.DefaultMBeanServerInterceptor.invoke(Def
aultMBeanServerInterceptor.java(Inlined Compiled Code))
at
mx4j.server.interceptor.ContextClassLoaderMBeanServerInterceptor
.invoke(ContextClassLoaderMBeanServerInterceptor.java(Compiled
Code))
at
mx4j.server.MX4JMBeanServer.invoke(MX4JMBeanServer.java(Compiled
 Code))
at
com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.ja
va(Compiled Code))
at
com.ibm.ws.security.util.AccessController.doPrivileged(AccessCon
troller.java(Compiled Code))
at
com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.j
ava(Compiled Code))
at
com.ibm.ws.management.connector.AdminServiceDelegator.invoke(Adm
inServiceDelegator.java(Inlined Compiled Code))
at
com.ibm.ws.management.connector.rmi.RMIConnectorService.invoke(R
MIConnectorService.java(Compiled Code))
at
com.ibm.ws.management.connector.rmi._RMIConnectorService_Tie.inv
oke(_RMIConnectorService_Tie.java(Compiled Code))
at
com.ibm.ws.management.connector.rmi._RMIConnectorService_Tie._in
voke(_RMIConnectorService_Tie.java(Compiled Code))
at
com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDe
legate.java(Compiled Code))
at
com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java(C
ompiled Code))
at com.ibm.rmi.iiop.ORB.process(ORB.java(Compiled Code))
at com.ibm.CORBA.iiop.ORB.process(ORB.java(Compiled Code))
at
com.ibm.rmi.iiop.Connection.respondTo(Connection.java(Compiled
Code))
at com.ibm.rmi.iiop.Connection.doWork(Connection.java(Compiled
Code))
at
com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java(Compiled
Code))
at
com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java(Compiled
Code))
at
com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java(Compiled
Code))

Problem conclusion

Added a check for a null return value from takeDump() before
using it.

The fix for this APAR is currently targeted for inclusion in
fix packs 6.0.2.33 and 7.0.0.3. 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
PK77235
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
60A
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-12-10
Closed date
2008-12-30
Last modified date
2008-12-30

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
R700 PSY
UP

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
23 October 2021

Tips

PK77235: WHILE GENERATING A HEAPDUMP USING THE WSADMIN SCRIPT OR JYTHON THE MEMORY DUMP FAILS THROWING JAVA.LANG.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

R700 PSY

Document Information

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