IT41897: SOME BROKER OWNED THREADS DO NOT DETACH FROM THE JVM BEFORE EXITING

APAR status

• Closed as program error.

Error description

• Native threads in the IntegrationServer or DataFlowEngine
  process must attach to the JVM using the AttachCurrentThread()
  JNI function before interacting with the Java virtual machine.
  The JNI spec requires that such threads call
  DetachCurrentThread() before the native thread exists. Some ACE
  threads do not detach from the JVM in this way before exiting in
  violation of the spec.
  
  This can cause abends to occur when third party JVM monitoring
  agents are injected into ACE as they may cause the JVM to try to
  access data from the threads that are no longer attached.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM App Connect Enterprise
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  <div><div>Native threads in the IntegrationServer or
  DataFlowEngine process must attach to the JVM using the
  AttachCurrentThread() JNI function before interacting with the
  Java virtual machine. The JNI spec requires that such threads
  call DetachCurrentThread() before the native thread exists. Some
  ACE threads do not detach from the JVM in this way before
  exiting in violation of the spec.</div> <div>This can cause
  abends to occur when third party JVM monitoring agents are
  injected into ACE as they may cause the JVM to try to access
  data from the threads that are no longer attached.</div></div>
  

Problem conclusion

• Al threads created by ACE that interact with the JVM now call
  DetacthCurrentThread() before they exit.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v11.0      11.0.0.20
  v12.0      12.0.7.0
  
  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

  APP CONNECT ENT

• Fixed component ID

  5724J0550

Applicable component levels