Fixes are available
PK93952: NullPointerException in CompoundClassLoader
7.0.0.9: WebSphere Application Server V7.0 Fix Pack 9 for IBM i
7.0.0.9: WebSphere Application Server V7.0 Fix Pack 9 for Windows
7.0.0.9: WebSphere Application Server V7.0 Fix Pack 9 for AIX
7.0.0.9: WebSphere Application Server V7.0 Fix Pack 9 for HP-UX
7.0.0.9: Java SDK 1.6 SR7 Cumulative Fix for WebSphere Application Server
7.0.0.9: WebSphere Application Server V7.0 Fix Pack 9 for Solaris
7.0.0.9: WebSphere Application Server V7.0 Fix Pack 9 for Linux
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for IBM i
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for Windows
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for HP-UX
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for AIX
7.0.0.11: Java SDK 1.6 SR7 Cumulative Fix for WebSphere Application Server
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for Solaris
7.0.0.11: WebSphere Application Server V7.0 Fix Pack 11 for Linux
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for AIX
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for HP-UX
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for IBM i
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Linux
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Solaris
7.0.0.13: WebSphere Application Server V7.0 Fix Pack 13 for Windows
7.0.0.13: Java SDK 1.6 SR8FP1 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for AIX
7.0.0.15: Java SDK 1.6 SR9 Cumulative Fix for WebSphere Application Server
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for HP-UX
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for IBM i
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Linux
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Solaris
7.0.0.15: WebSphere Application Server V7.0 Fix Pack 15 for Windows
7.0.0.17: WebSphere Application Server V7.0 Fix Pack 17
7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server
APAR status
Closed as program error.
Error description
Attempts to load a class from a disposed CompoundClassLoader results in NullPointerException. Attempts to output a disposed CompoundClassLoader also results in an NullPointerException, which can make problem determination difficult. The NullPointerException is due to internal variables being set to null when the CompoundClassLoader is disposed.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server V7.0 * **************************************************************** * PROBLEM DESCRIPTION: Users who use an application's class * * loader after the application has been * * stopped may see a * * NullPointerException. * **************************************************************** * RECOMMENDATION: * **************************************************************** Use of an application's class loader after the application is stopped may result in one of the following NullPointerExceptions: java.lang.NullPointerException at com.ibm.ws.classloader.CompoundClassLoader.libraryClassLoadersFi ndClass(CompoundClassLoader.java:658) at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundC lassLoader.java:471) ... or java.lang.NullPointerException at com.ibm.ws.classloader.CompoundClassLoader.toString(CompoundClas sLoader.java:1193) ...
Problem conclusion
When an application is stopped, it's class loader is disposed of and some internal structures are set to null. If this class loader is subsequently used, the null structures may cause a NullPointerException. In this APAR the structures are no longer nulled out but their contents are cleared. The fix for this APAR is currently targeted for inclusion in fix pack 7.0.0.9. 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
PK93952
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-08-14
Closed date
2009-09-23
Last modified date
2009-09-23
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
WEBSPHERE APP S
Fixed component ID
5724J0800
Applicable component levels
R700 PSY
UP
Document Information
Modified date:
24 October 2021