JR57853: YOU MIGHT EXPERIENCE ABNORMALLY HIGH CPU SUDDENLY AND WSVR0605W MESSAGES

8.5.6.2-WS-BPM-IFJR57853
8.5.7.201703-WS-BPM-IFJR57853
bpm.8570.cf2017.06.delta.repository

APAR status

• Closed as program error.

Error description

• In rare cases, IBM Business Process Manager (BPM) might use an
  abnormally amount of CPU. This issue occurs because of
  concurrent access to a HashMap, which is not synchronized.
  
  With a thread dump, you might see a few threads with the
  following stack that uses a lot of CPU:
  "WebContainer : 3" daemon prio=3 tid=0x00000001047be000
  nid=0x4a1
  runnable [0xffffffff40af2000]
  java.lang.Thread.State: RUNNABLE
  at java.util.HashMap.getEntry(HashMap.java:347)
  at java.util.HashMap.containsKey(HashMap.java:335)
  at
  com.lombardisoftware.server.ejb.persistence.versioning.BranchMan
  ager.upd
  ateUniqueBranchCount(BranchManager.java:728)
  at
  com.lombardisoftware.server.ejb.persistence.versioning.BranchMan
  ager.getContext(BranchManager.java:717)
  at
  com.lombardisoftware.server.ejb.persistence.versioning.BranchMan
  ager.readAccess(BranchManager.java:227)
  at
  com.lombardisoftware.server.ejb.persistence.PersistenceServicesC
  ore.getVersionSummaryId(PersistenceServicesCore.java:846)
  
  PRODUCTS AFFECTED
  IBM BPM Advanced
  IBM BPM Standard
  IBM BPM Express
  

Local fix

• Restart the IBM BPM server.
  

Problem summary

• No additional information is available.
  

Problem conclusion

• A fix that synchronizes the HashMap object will be included in
  IBM BPM V8.5.7 cumulative fix 2017.06.
  

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

  BPM ADVANCED

• Fixed component ID

  5725C9400

Applicable component levels