PI17062: JNI LAYER MEMORY LEAK OCCURS WHEN HANDLING ERRORS WITH JMS ADAPTER AND SAP JALE ADAPTER LISTENERS

APAR status

• Closed as program error.

Error description

• JNI memory leak occurs when handling error conditions in JMS
  adapter and SAP JALE adapter listeners.
  

Local fix

• WTXCQ - WTX00044851
  PB / PB
  Circumvention: None
  

Problem summary

• Users Affected:
  WebSphere Transformation Extender customers who use Java based
  listeners, such as JALE and JMS, that encounter connectivity
  errors on the server which is being watched
  
  Problem Description:
  A Java memory leak exists when the JALE adapter listener is
  running while the SAP gateway is down.
  
  Platforms Affected:
  All
  

Problem conclusion

• Whenever re-connecting on the same Connection object, the old
  connection is properly deleted.  Before this fix, a failed
  listen operation would lead to a JVM memory leak since it would
  trigger a continuous number of reconnect operations.  Each
  reconnect never freed a global JNI reference to the old
  connection, which in turn would lead to a memory leak in the
  JVM.
  
  Applies to:
  8.3.0.6, 8.4.0.4, 8.4.1.1
  
  Fixed in the next service packs and releases.
  
  To obtain the fix for this APAR:
  
  To see if the next service pack or product release is available,
  check the WebSphere Transformation Extender Downloads page:
  http://www.ibm.com/support/entry/portal/product/other_software/t
  ransformation_extender
  
  If the service pack or product release is available, download it
  from PassportAdvantage:
  http://www.ibm.com/software/howtobuy/passportadvantage/pao_custo
  mers.htm
  
  If the service pack or product release is not available and you
  require the APAR fix immediately, request a Limited Availability
  Interim Fix (LAIF) by opening a PMR:
  https://www.ibm.com/support/servicerequest/Home.action
  

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 LAUNC

• Fixed component ID

  5724M4011

Applicable component levels

• R830 PSY

     UP

• R840 PSY

     UP

• R841 PSY

     UP