PH44329: WEBSPHERE Z/OS 9.0.5 ABENDS WITH "JAVA/LANG/OUTOFMEMORYERROR" "FAILED TO CREATE A THREAD: RETVAL -1073741830

APAR status

• Closed as program error.

Error description

• Javacore shows:
  
  Detail "java/lang/OutOfMemoryError" "Failed to create a thread:
  retVal -1073741830, errno 112 (0x70), errno2 0xb510292" received
  
  
  
  Interrogation of the SVCdump showed that if a request is on
  the request queue when a connection is cleaned up,an xrcd
  element is leaked.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  *                  V9.0 for z/OS                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: WebSphere Application Server for z/OS   *
  *                      controller did not have enough storage  *
  *                      to create a thread.                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  WebSphere Application Server for z/OS controller did not have
  enough storage to create a thread because cpool cells in the
  "SCBBO COMM extra data" cpool are not freed if the request is
  still on the queue when the connection is cleaned up.
  WOLA over Local comm is being used to process the requests.
  The allocated cells have an eye-catcher of BBOCXRCD.
  The following are a few sequences where a BBOCXRCD cell can
  be leaked.
  BBOA1REG BBOA1CNG BBOA1SRQ BBOA1CNR BBOA1RCL BBOA1URG
  BBGA1REG BBGA1CNG BBOA1SRQ BBGA1URG
  BBGA1REG BBGA1CNG BBOA1SRQ
  For the last two the leak only happens if
  CF_Local_Connection_Object_Manager::processAsyncReadComplete
  does not complete before the connection is cleaned up.
  Normal sequence where a cell is not leaked is
  BBGA1REG BBGA1CNG BBGA1SRQ BBGA1RCL BBGA1GET BBGA1CNR BBGA1URG
  

Problem conclusion

• Changed the code to delete the requests BBOCXRCD when a
  queued request is being cleaned up.
  
  The fix for this APAR is targeted for inclusion in fix pack
  9.0.5.12. For more information, see 'Recommended Updates for
  WebSphere Application Server':
  
  https://www.ibm.com/support/pages/node/715553
  

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