PM21467: OUT OF MEMORY CONDITION OCCURS ON WEBSPHERE EXTREME SCALE SERVERS

PM20441; 6.1.0.5 Cumulative fix 5 for WebSphere eXtreme Scale
PM22469; 7.1.0: Cumulative fix 1 for eXtreme Scale version 7.1

APAR status

• Closed as program error.

Error description

• outOfMemory condition occurs on WebSphere eXtreme Scale servers,
  with the following exception in the FFDC logs
  
  ------Start of DE processing------ = [8/25/10 13:18:47:069 PDT]
  , key = java.lang.IllegalStateException
  com.ibm.ws.objectgrid.replication.PrimaryShardImpl$1.register
  388
  Exception = java.lang.IllegalStateException
  Source =
  com.ibm.ws.objectgrid.replication.PrimaryShardImpl$1.register
  probeid = 388
  Stack Dump = java.lang.IllegalStateException: Couldn't update
  record [Element:
  fetch_ealert_preferences_responselrhevr0fwj0kdjdzksedjqh6ypw=d7b
  dbabe-07e8-3281-f0f5-5675eae2ac50
  com.xxxx.yyyy.common.cache.entry.GenericEntry@7c007c0]!
          at
  com.ibm.ws.objectgrid.util.CheckpointHashtable$CheckpointSystemM
  ap.applyPMap(CheckpointHashtable.java:139)
          at
  com.ibm.ws.objectgrid.util.CheckpointHashtable.apply(CheckpointH
  ashtable.java:599)
          at
  com.ibm.ws.objectgrid.map.BaseMap.removeCheckpointMap(BaseMap.ja
  va:5889)
          at
  com.ibm.ws.objectgrid.map.BaseMap.registerLogSequenceListener(Ba
  seMap.java:5732)
          at
  com.ibm.ws.objectgrid.ObjectGridImpl.registerLogSequenceListener
  (ObjectGridImpl.java:2086)
          at
  com.ibm.ws.objectgrid.replication.PrimaryShardImpl$1.run(Primary
  ShardImpl.java:620)
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of WebSphere eXtreme Scale        *
  ****************************************************************
  * PROBLEM DESCRIPTION: Over time, an outOfMemory condition     *
  *                      occurs on                               *
  *                      WebSphere eXtreme Scale servers,        *
  *                      with java.lang.IllegalStateException    *
  *                      FFDC entries logged.                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During replication of data from primary shard to replica
  shard, an error condition exists that causes an outOfMemory
  condition to occur on both primary and replica servers.
  

Problem conclusion

• The eXtreme Scale runtime was updated to handle the error
  condition to avoid getting into the leak condition.  This
  change will be published in future cumulative fixes for the
  Version 6.1, Version 7.0, and Version 7.1 releases.
  

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

  XD EXTREME SCAL

• Fixed component ID

  5724J3402

Applicable component levels

• R610 PSY

     UP

• R700 PSY

     UP

• R710 PSY

     UP