PM43071: CLASSLOADER MEMORY LEAK.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Classloader memory leak in Naming CacheManager in the servant
  region. Leak occurs if applications are started and stopped many
  times such as in a stress test.
  Example of leak:
  0x14c52e700 com/ibm/ws/naming/jcache/CacheKey@66c366c3
    0x14ad88ad0 java/util/HashMap$Entry@67146714
     0x14471a228 java/util/HashMap$Entry@55905590
      0x14e2a8d58 [Ljava/util/HashMap$Entry;@711b711b
        0x128487320 class
  com/ibm/ws/naming/jcache/CacheManager@6bc46bc4
         0x128a99668
  org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader@7f5f7f5
  f
          [truncating at system class LEAK]
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server V6.1.0                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: Slow memory leak of JNDI caches on      *
  *                      the z/OS platform when applications     *
  *                      are started and stopped repeatedly.     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Slow memory leak of JNDI caches on the z/OS platform when
  applications are started and stopped repeatedly.  The leak
  might show up as a classloader leak because JNDI caches are
  linked to application classloaders.
  

Problem conclusion

• The memory leak occurred because JNDI caches associated with
  a stopped application were not removed. JNDI caches
  associated with an application are removed when the
  application is stopped.
  
  APAR PM43071 is currently targeted for inclusion in Service
  Level (Fix Pack) 6.1.0.43 of WebSphere Application Server V6.1.
  
  Please refer to URL:
  //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
  for Fix Pack availability.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  PM20539

• 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

• R610 PSY UK76696

     UP12/03/18 P F203

Fix is available

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