Fixes are available
8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
8.5.0.1: WebSphere Application Server V8.5 Fix Pack 1
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
8.5.0.2: WebSphere Application Server V8.5 Fix Pack 2
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
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
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
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
Obtain the fix for this APAR.
APAR status
Closed as program error.
Error description
After a SESN0196W error on a getSession() or getSession(true) request, session manager will attempt to retrieve a session from the backend. The second attempted retrieval may still return null and result in NPE. java.lang.NullPointerException at com.ibm.ws.session.SessionManager. createISession(SessionManager.java:310) at com.ibm.ws.session.SessionManager. createSession(SessionManager.java:692) at com.ibm.ws.session.SessionContext. getIHttpSession(SessionContext.java:473) at com.ibm.ws.session.SessionContext. getIHttpSession(SessionContext.java:408) at com.ibm.ws.webcontainer.srt.SRTRequestContext. getSession(SRTRequestContext.java:89) at com.ibm.ws.webcontainer.srt.SRTServletRequest. getSession(SRTServletRequest.java:1775) at com.ibm.ws.webcontainer.srt.SRTServletRequest. getSession(SRTServletRequest.java:1762)
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: IBM WebSphere Application Server V7.0, * * V8.0, and V8.5 users of database session * * persistence. * **************************************************************** * PROBLEM DESCRIPTION: When database session persistence is * * enabled, there is a possibility that * * a java.lang.NullPointerException * * would occur after the duplicate id * * exception SESN0196W. * **************************************************************** * RECOMMENDATION: * **************************************************************** When a duplicate id exception is thrown, and the thread that retrieves the session immediately invalidated it, a java.lang.NullPointerException may occur on another thread which looks for a session with the same session id.
Problem conclusion
Code changes were made to the session manager to ensure that a java.lang.NullPointerException would not occur in the above scenario. If the session does not exist in the backend, a new session will be created. APAR PM61525 is currently targeted for inclusion in Fix Packs 7.0.0.25, 8.0.0.4, and 8.5.0.1 of WebSphere Application Server. Please refer to URL: //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970 for Fix Pack availability.
Temporary fix
Comments
APAR Information
APAR number
PM61525
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-03-29
Closed date
2012-05-14
Last modified date
2012-11-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PM89764 PM89765
Fix information
Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500
Applicable component levels
R700 PSY UK81738
UP12/10/04 P F210
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
Document Information
Modified date:
28 October 2021