PI43536: BROKER ADDRESS SPACE TERMINATES WITH EC6-FF09 ABEND.

APAR status

• Closed as program error.

Error description

• During the admin agent start up process, it checks if there are
  any DataFlowEngine processes that remain after the broker was
  previously shutdown. If it does find any such processes, it
  sends a sigkill signal to end them. It does not check what
  these processes are and assumes that they are DataFlowEngine
  processes. Though very unlikely, it may be possible that the
  restarted admin agent has been assigned a Process ID
  (PID) that previously belonged to a DataFlowEngine process and
  this remains in the data store that is checked by the admin
  agent. Consequently, the admin agent may send a sigkill signal
  for the same PID that it is itself assigned, thereby resulting
  in the EC6-FF09 abend in the broker address space.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of WebSphere Message Broker and IBM Integration Bus on
  z/OS.
  
  
  Platforms affected:
  z/OS
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  During the admin agent start up process, it checks if there are
  any DataFlowEngine processes that remain after the broker was
  previously shutdown. If it does find any such processes, it
  sends a sigkill signal to end them. It does not check what
  these processes are and assumes that they are DataFlowEngine
  processes. Though very unlikely, it may be possible that the
  restarted admin agent has been assigned a Process ID
  (PID) that previously belonged to a DataFlowEngine process and
  this remains in the data store that is checked by the admin
  agent. Consequently, the admin agent may send a sigkill signal
  for the same PID that it is itself assigned, thereby resulting
  in the EC6-FF09 abend in the broker address space.
  
  There are a number of resource name changes between WebSphere
  Message Broker and IBM Integration Bus Version 9.0. For details
  visit
  http://www-01.ibm.com/support/knowledgecenter/SSMKHH_9.0.0/com.i
  bm.etools.mft.doc/bb23814_.htm
  

Problem conclusion

• Before killing any processes whose PID remains in the data store
  after the admin agent has ended, the product now checks the
  process to confirm it is of the expected type and is owned by
  the broker before it is killed.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v7.0       7.0.0.8
  v8.0       8.0.0.7
  v9.0       9.0.0.6
  v10.0      10.0.0.4
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

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

  WEB MB Z/OS

• Fixed component ID

  5655V6000

Applicable component levels

• R700 PSY

     UP