PH24993: Liberty fails to remove the client address space level RESMGRS when cleaning up Liberty's Client Structures.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Customer noticed that *MASTER* was suddenly using an
  extensive amount of CPU.
  Analysis of a stand alone dump revealed that
  the CPUs were tight looping in the Liberty Angel module
  BBGZAFSM.
  The loop was identified on one instruction 05EF with R15
  pointing back to the start of the same instruction.
  

Local fix

• Ensure all client address spaces that were connected to the
  Angel are stopped before the Angel is restarted again.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Liberty on z/OS is not deleting Client  *
  *                      address space level RESMGR.             *
  ****************************************************************
  Code is missing during the client side cleanup of structures
  related to using OLA.  The missing code is to delete an
  established address space level RESMGR.   If the usage pattern
  of OLA for the client is in a long lived address space, such as
  a batch initiator or a CICS region, these RESMGRs can build up
  over time.   There is a small amount of Common storage related
  to each established RESMGR.
  
  It has been observed in a customer scenario where over 100
  outstanding RESMGRs were present when the address space went
  though EOM termination.
  

Problem conclusion

• The level of Liberty in CICS has been updated to 20.0.0.6 which
  includes the fix for Liberty APAR PH24366.
  

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:

Modules/Macros

• DFHWLPAX
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R00L PSY UI70917

     UP20/08/07 P F008

• R10L PSY UI70918

     UP20/08/06 P F008

• R20L PSY UI70919

     UP20/08/06 P F008

• R30L PSY UI70922

     UP20/08/06 P F008

• R80L PSY UI70916

     UP20/08/07 P F008

• R90L PSY UI70920

     UP20/08/11 P F008

Fix is available

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