PI89346: 8.5.5.10 CONTROL REGIONN COM.IBM.WS.XCT.IMPL.XCTSTACK OOM

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

• WebSphere Application Server traditional Control Region abends
  with java.lang.OutOfMemoryError
  
  Memory Analysis Tool shows:
  
  Leak Suspect 1:
  The thread java.lang.Thread @ aaaaaaaa
  
  The memory is accumulated in one instance of
  "java.lang.Object[]" loaded
  by "com.ibm.oti.vm.BootstrapClassLoader @
  
  heap space used is retained by instances
  of com.ibm.ws.xct.impl.XctStack.
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Users of BM WebSphere Application Server    *
  *                  for                                         *
  *                  z/OS with XCT enabled                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: java.lang.OutOfMemoryError in z/OS      *
  *                      control                                 *
  *                      region with XCT enabled                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  If Cross Component Tracing (XCT) is enabled on z/OS, the HTTP
  channel may leak XctStack objects causing an OOM.
  

Problem conclusion

• The code was updated to ensure XCT End is called for each XCT
  Begin.
  
  The fix for this APAR is currently targeted for inclusion in fix
  pack 8.5.5.14 and 9.0.0.8. Please refer to the Recommended Updat
  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

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels

• R850 PSY

     UP