PH66833: MEMORY LEAK IN WEB SERVER PLUG-INS FOR IBM WEBSPHERE APPLICATION SERVER

APAR status

• Closed as program error.

Error description

• Plugin may cause memory leaks after migrating to WAS fix pack
  versions 8.5.5.26, 8.5.5.27, 8.5.5.28, 9.0.5.22, 9.0.5.23,
  9.0.5.24, or 9.0.5.25
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Memory leak issue post-migration to     *
  *                      versions 8.5.5.26 - 8.5.5.28,           *
  *                      9.0.5.22-9.0.5.25 may cause resource    *
  *                      depletion                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  After migrating to Web Server Plug-in fix pack versions
  8.5.5.26, 8.5.5.27, 8.5.5.28, 9.0.5.22, 9.0.5.23, 9.0.5.24, or
  9.0.5.25, customers may experience a memory leak in the
  plug-in process. Over time, this can lead to steadily
  increasing memory usage, which may degrade performance and
  reduce system stability. The issue is of medium severity and
  does not immediately impact availability, but prolonged
  operation without mitigation can worsen performance. As a
  temporary workaround, restarting the IBM HTTP Server during
  off-peak hours can help reduce resource consumption until a
  permanent fix is applied.
  

Problem conclusion

• The memory leaks have been addressed with this APAR, along
  with APAR PH66834, in the upcoming fix packs.
  The fix for this APAR is targeted for inclusion in fix pack
  8.5.5.29 and 9.0.5.26. For more information, see 'Recommended
  Updates for WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

Temporary fix

• Restart IHS server during off hours
  Restart IHS server during off hours
  Restart IHS server during off hours
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels