PK55495: INCORRECT RECORDING OF PARTNER IN SAME SYSPLEX

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When a CICS system receives a request to establish communication
  using TCP/IP it can fail to correctly detect whether or not the
  partner system is within the same sysplex.  The CICS system can
  incorrectly record that partner system is in the same sysplex
  when it is not, or it can incorrectly record that it is not in
  the same sysplex when it is. When TCP/IP communication is in use
  for IPIC connectivity, during the process to acquire an IPCONN a
  CICS system can incorrectly record whether or not the partner is
  in the same sysplex so that there is a failure to correctly
  correlate CICS tasks for the purposes of z/OS Workload Manager.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Incorrect recording of CICS information *
  *                      in WLM when using an IPIC connection to *
  *                      a partner in the same sysplex.          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The CICS SO domain incorrectly interprets the result of a z/OS
  communications server GETSOCKOPT request for SO_CLUSTERCONNTYPE
  which reports whether a partner system is in the same sysplex.
  The incorrect interpretation means the actual result of this
  request produces unpredictable results so that a CICS system can
  wrongly decide the partner system is in the same sysplex or not.
  This in turn results in incorrect correlation of CICS tasks
  for the z/OS Workload Manager when using an IPIC connection.
  
  Additional Keywords: IPCONN IPIC WLM SECURITY iwmmswch
  

Problem conclusion

• Logic in CICS SO domain that interprets the result of this
  request to z/OS communications server has been corrected.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  UK32949

Modules/Macros

•    DESSOUS  DFHSOCK  DFHSOUSC
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R500 PSY UK32949

     UP08/01/19 P F801

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.