PH43575: UNNECESSARY FILE IO FOR CICS BUNDLES WITHIN LIBERTY JVM

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When a Liberty JVM server is disabled and then re-enabled CICS
  clears the installedApps.xml configuration file and
  installedApps directory before repopulating these with any
  applications installed using BUNDLEs.  This causes zFS IO which
  could be avoided.
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Unnecessary zFS IO when a Liberty JVM   *
  *                      server is enabled.                      *
  ****************************************************************
  A Liberty JVM server is enabled and an application is installed
  using a BUNDLE resource.  CICS copies the application archive
  file to the server's installedApps directory and adds an
  application element to installedApps.xml.  The application runs
  successfully.
  
  The JVMSERVER is subsequently disabled and re-enabled,
  potentially following a restart of the region.  As part of
  re-enabling the Liberty JVMSERVER CICS clears the installedApps
  directory and installedApps.xml.  When the BUNDLE is processed
  the application archive has to be re-copied into the
  installedApps directory despite having not changed, and the edit
  to installedApps.xml is performed again.  This zFS IO is
  unnecessary.
  

Problem conclusion

• CICS has been modified so that updates to the installedApps
  directory and installedApps.xml file only occur when needed to
  reduce zFS IO.
  

Temporary fix

Comments

• ×**** PE24/03/25 FIX IN ERROR. SEE APAR PH60532  FOR DESCRIPTION
  

APAR Information

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

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

  PH52386 UI91005 UI91006

Modules/Macros

• DFHAPLJ1 DFHAPLJP DFHDSAC  DFHLEPTS DFHPIWR  DFHSJBD  DFHSJDM
  DFHSJDS  DFHSJJI  DFHSJJS  DFHSJRL  DFHSJSC  DFHSJST  DFHSJT8
  DFHSJTH  DFHSJTHT DFHSJTRI DFHXMIQ  DFJ@H350 DFJ@H351 DFJ@H352
  DFJ@H356 DFJ@H360 DFJ@H467 DFJ@H468 DFJ@H498 DFJ@H561 DFJ@H563
  DFJ@H571
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R200 PSY UI91006

     UP23/03/18 P F303

• R300 PSY UI91005

     UP23/03/18 P F303

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.