PI85865: NULLPOINTEREXCEPTION IN LRUHASHMAP

9.0.0.6: WebSphere Application Server traditional V9.0 Fix Pack 6
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
9.0.0.7: WebSphere Application Server traditional V9.0 Fix Pack 7
9.0.0.8: WebSphere Application Server traditional V9.0 Fix Pack 8
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
9.0.5.4: WebSphere Application Server traditional Version 9.0.5 Fix Pack 4
9.0.5.5: WebSphere Application Server traditional Version 9.0.5 Fix Pack 5
WebSphere Application Server traditional 9.0.5.6
9.0.5.7: WebSphere Application Server traditional Version 9.0.5 Fix Pack 7
9.0.5.8: WebSphere Application Server traditional Version 9.0.5.8
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
9.0.5.9: WebSphere Application Server traditional Version 9.0.5.9
9.0.5.10: WebSphere Application Server traditional Version 9.0.5.10
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
9.0.5.11: WebSphere Application Server traditional Version 9.0.5.11

APAR status

• Closed as program error.

Error description

• A NullPointerException in LRUHashMap occurs
  
  com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E:
  [Servlet Error]-[RestServices]: java.lang.NullPointerException
  at com.ibm.ws.session.utils.LRUHashMap.put(LRUHashMap.java:142)
  at
  com.ibm.ws.session.store.common.BackedHashMap.superPut(BackedHas
  hMap.java:676)
  at
  com.ibm.ws.session.store.mtm.MTMHashMap.superPut(MTMHashMap.java
  :579)
  at
  com.ibm.ws.session.store.common.BackedHashMap.put(BackedHashMap.
  java:618)
  at
  com.ibm.ws.session.store.common.BackedStore.createSession(Backed
  Store.java:237)
      at
  com.ibm.ws.session.SessionManager.createISession(SessionManager.
  java:247)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  *                  users who use Memory-to-memory session      *
  *                  replication configuration                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: The LRU (Least Recently Used) session   *
  *                      table may give NullPointerException     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  *                                                              *
  ****************************************************************
  In the event of the LRU session table full condition during
  put() method, NullPointerException may be thrown.
  

Problem conclusion

• Code changes were made to handle the sessions are replaced
  correctly in the LRU session table.
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.5.13 and 9.0.0.7  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 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

• R850 PSY

     UP