IV23062: MEMORY UTILIZATION FOR THE AMQRMPPA PROCESS INCREASES WITH EACH CLIENT CONNECTION

Fix Pack 7.1.0.3 for WebSphere MQ V7.1

APAR status

• Closed as program error.

Error description

• Each new client connection to the queue manager causes memory
  
  growth of 200 to 400 bytes in the amqrmppa
  connection process.
  
  This memory will not be released until the queue manager is
  restarted.
  
  MQ trace will show rsxAccessCache allocating memory that is not
  freed before the allocating thread ends.
  

Local fix

• No local fix is available.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users who have client applications that continuously connect and
  disconnect may hit this problem
  
  Platforms affected:
  All Distributed (iSeries, all Unix and Windows)
  ****************************************************************
  PROBLEM SUMMARY:
  When starting a channel conversation, a region of memory was
  being allocated to store the channel authority state.  This
  memory was not being freed correctly when the client
  disconnected.
  

Problem conclusion

• The code in this area was refactored which resulted in the code
  that leaked memory being removed.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
                     v7.1
  Platform           Fix Pack 7.1.0.3
  --------           --------------------
  Windows            7.1.0.3
  AIX                7.1.0.3
  HP-UX (Itanium)    7.1.0.3
  Solaris (SPARC)    7.1.0.3
  Solaris (x86-64)   7.1.0.3
  iSeries            7.1.0.3
  Linux (x86)        7.1.0.3
  Linux (x86-64)     7.1.0.3
  Linux (zSeries)    7.1.0.3
  Linux (Power)      7.1.0.3
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  

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

  WMQ AIX V7

• Fixed component ID

  5724H7221

Applicable component levels

• R710 PSY

     UP