PH00755: FIXING CONCURRENTMODIFICATIONEXCEPTION REPORTED DURING MULTI SYNC OPERATION

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

• Running multisync operation using the script fails with
  ConcurrentModificationException mentioned below.
  [6/20/18 18:52:03:710 CEST] FFDC
  Exception:java.util.ConcurrentModificationException
  SourceId:com.ibm.ws.management.cellmanager.DeploymentManager.mul
  tiSync.run ProbeId:206
  Reporter:com.ibm.ws.management.deploymentmanager.MultiSyncManage
  r$MultiSyncManagerThread@f5b42512
  java.util.ConcurrentModificationException
  at java.util.HashMap$HashIterator.nextEntry(HashMap.java:934)
  at java.util.HashMap$KeyIterator.next(HashMap.java:968)
  at
  com.ibm.ws.management.deploymentmanager.MultiSyncManager$MultiSy
  ncManagerThread.checkCurrentSyncs(MultiSyncManager.java:630)
  at
  com.ibm.ws.management.deploymentmanager.MultiSyncManager$MultiSy
  ncManagerThread.run(MultiSyncManager.java:424)
  at
  com.ibm.ws.management.deploymentmanager.MultiSyncManager.begin(M
  ultiSyncManager.java:151)
  at
  com.ibm.ws.management.deploymentmanager.MultiSyncManager.begin(M
  ultiSyncManager.java:127)
  at
  com.ibm.ws.management.deploymentmanager.DeploymentManager.multiS
  ync(DeploymentManager.java:300)
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Network Deployment Version 8.5.5 or  *
  *                  later                                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: In rare circumstances using             *
  *                      DeploymentManager MBean multisync       *
  *                      operation may fail                      *
  *                      with ConcurrentModificationException.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Running multisync operation fails with
  ConcurrentModificationException
  mentioned below.
  [6/20/18 18:52:03:710 CEST] FFDC
  Exception:java.util.ConcurrentModificat
  ionException
  SourceId:com.ibm.ws.management.cellmana
  ger.DeploymentManager.mul
  tiSync.run ProbeId:206
  Reporter:com.ibm.ws.management.deployme
  ntmanager.MultiSyncManage
  r$MultiSyncManagerThread@f5b42512
  java.util.ConcurrentModificationExcepti
  on
  

Problem conclusion

• The code is corrected to avoid concurrent modification
  exception.
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.5.15 and 9.0.0.9.  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 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

• R900 PSY

     UP