Fix (APAR):  PI47103

Status:  Fix

Release:  8.5.5.8,8.5.5.7,8.5.5.6

Operating System:  AIX,HP-UX,IBM i,Linux,Solaris,Windows,z/OS

Supersedes Fixes:  PI43752

CMVC Defect:  xxxxxx

Byte size of APAR:  990031

Date: 2016-02-01

Abstract:  java.lang.nullpointerexception when using async servlets and pmi

Description/symptom of problem:  
PI47103 resolves the following problem:

ERROR DESCRIPTION:                                              
Details: When an application uses async servlets and PMI is     
enabled a java.lang.NullPointerException might be seen. The     
following is an example of the stack trace generated:           
                                                                
java.lang.NullPointerException                                  
at                                                              
com.ibm.ws.webcontainer.WebAppPmiListener.onComplete(WebAppPmiLi
stener.java:363)                                                
at                                                              
com.ibm.ws.webcontainer.async.AsyncListenerEntry.invokeOnComplet
e(AsyncListenerEntry.java:85)                                   
at                                                              
com.ibm.ws.webcontainer.async.CompleteRunnable.invokeOnComplete(
CompleteRunnable.java:61)                                       
at                                                              
com.ibm.ws.webcontainer.async.CompleteRunnable.run(CompleteRunna
ble.java:40)                                                    
at                                                              
com.ibm.ws.webcontainer.async.WSCompleteRunnable.run(WSCompleteR
unnable.java:44)                                                
at com.ibm.ws.asynchbeans.J2EEContext.run(J2EEContext.java:809) 
... 5 more                                                      

LOCAL FIX:                                                      
Disable PMI on the server.                                      

PROBLEM SUMMARY

USERS AFFECTED:
 IBM WebSphere Application Server Full
Profile version 8.5 users of async
requests and Performance Monitoring
Infrastructure(PMI).

PROBLEM DESCRIPTION:
A java.lang.NullPointerException
might occur when using async requests
and PMI

RECOMMENDATION:
None

When an application uses async requests and PMI is enabled,
and there is an async filter doing a forward, a
java.lang.NullPointerException will be seen. The following is
an example of the stack trace generated:
java.lang.NullPointerException
at
com.ibm.ws.webcontainer.WebAppPmiListener.onComplete(WebAppPmiLi
stener.java:363)
at
com.ibm.ws.webcontainer.async.AsyncListenerEntry.invokeOnComplet
e(AsyncListenerEntry.java:85)
at
com.ibm.ws.webcontainer.async.CompleteRunnable.invokeOnComplete(
CompleteRunnable.java:61)
at
com.ibm.ws.webcontainer.async.CompleteRunnable.run(CompleteRunna
ble.java:40)
at
com.ibm.ws.webcontainer.async.WSCompleteRunnable.run(WSCompleteR
unnable.java:44)
at com.ibm.ws.asynchbeans.J2EEContext.run(J2EEContext.java:809)
... 5 more

PROBLEM CONCLUSION:                                             
The WebContainer code was modified to avoid the exception.      
                                                                
The fix for this APAR is currently targeted for inclusion in    
fixpack 8.5.5.9.                                                
Please refer to the recommended updates page for delivery       
information:                                                    
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980   


Directions to apply fix:  Fix applies to Editions:
Release 8.5
_X_ Application Server (Express or BASE)
_X_ Network Deployment (ND)
__ Liberty Core
__ Edge Components
_X_ Developer

Install Fix to all WebSphere installations unless special instructions are included below.

Special Instructions: None

NOTE:
The user must:
* Logged in with the same authority level when unpacking a fix, fix pack or refresh pack.
* Be at V1.4.3 or newer of the Installation Manager. Certain iFixes may require a newer version of the Installation Manager and the Installation Manager will inform you during the installation process if a newer version is required.

The IBM Knowledge Center can provide details, if needed, on the use of the Installation Manager to apply the iFixes.
http://publib.boulder.ibm.com/infocenter/install/v1r4/index.jsp.  Shutdown WebSphere Application Server before applying the iFixes.  Restart WebSphere Application Server after applying the iFixes.



Directions to remove fix:  

The IBM Knowledge Center can provide details, if needed, on the use of the Installation Manager to remove the iFixes.
http://publib.boulder.ibm.com/infocenter/install/v1r4/index.jsp.  Shutdown WebSphere Application Server before removing the iFixes.  Restart WebSphere Application Server after removing the iFixes.



Directions to re-apply fix:  
1) Shutdown WebSphere Application Server.

2) Follow the Fix instructions to apply the fix.

3) Restart WebSphere Application Server.





Additional Information: