IT36196: MEMORY LEAK WHEN PUBLISHING STATISTICS TO WEB-UI

APAR status

• Closed as program error.

Error description

• When publishing Accounting and Statistics messages for
  consumption in the Web-UI a buffer is created that is
  associated with the lifetime of a node.js object used to
  perform the publication. Because the size of this node.js is
  very small it may be a long time before the object is garbage
  collected and in the meantime the buffer is not released
  resulting in a memory leak.
  
  It is possible to workaround this
  issue by disabling Accounting and Statistics in the
  server.conf.yaml file.
  

Local fix

• It is possible to workaround this issue by disabling Accounting
  and Statistics in the server.conf.yaml file.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of App Connect Enterprise version 11.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  <span style="background-color:rgb(255, 255, 255)">When
  publishing Accounting and Statistics messages for </span><span
  style="background-color:rgb(255, 255, 255)">consumption in the
  Web-UI a buffer is created that is </span><span
  style="background-color:rgb(255, 255, 255)">associated with the
  lifetime of a node.js object used to </span><span
  style="background-color:rgb(255, 255, 255)">perform the
  publication. Because the size of this node.js is </span><span
  style="background-color:rgb(255, 255, 255)">very small it may be
  a long time before the object is garbage </span><span
  style="background-color:rgb(255, 255, 255)">collected and in the
  meantime the buffer is not released </span><span
  style="background-color:rgb(255, 255, 255)">resulting in a
  memory leak.                                    </span>
  <span style="background-color:rgb(255, 255, 255)">
  
  </span>
  <span style="background-color:rgb(255, 255, 255)">It is possible
  to workaround this </span><span style="background-color:rgb(255,
  255, 255)">issue by disabling Accounting and Statistics in the
  </span><span style="background-color:rgb(255, 255,
  255)">server.conf.yaml file.       </span>
  

Problem conclusion

• App Connect Enterprise has been updated so that it now registers
  the amount of native memory allocated for these buffers with the
  node.js engine. This allows node.js to garbage collect the
  objects in a timely manner.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v11.0      11.0.0.12
  
  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