PK77624: ABEND 0C4-10 CSQMP2GB+66 WHEN USING CICS TRANSACTION ISOLATION AND UK32990 IS APPLIED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: The WMQ Get Fast Wait processing logic  *
  *                      fails with abend S0C4-10 in a system    *
  *                      where TRANISO=YES is specified.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Attempts by a WMQ Putter task to insert a message into a WMQ Get
  Fast Waiter's input buffer fail with an S0C4-10 abend when
  TRANISO=YES is specified. This is because, when transaction
  isolation is active, CICS switches the application doing the PUT
  into a subspace which does not have access to the buffer of the
  application doing the GET.
  Additional keywords: ASRA abendASRA DFHAP0001 abends0c4
                       abend0C4 MQ ISOLATE STGPROT msgDFHAP0001
  

Problem conclusion

• A test has been inserted prior to the MQPUT logic in DFHMQTRU to
  see whether or not transaction isolation is active. If it is, a
  subspace switch back to basespace is made prior to the MQPUT,
  with another switch back to subspace upon return from the MQPUT
  call.
  
  The CICS Transaction Server for z/OS Messages and Codes manual,
  Version 3 Release 2, GC34-6827-01, has been updated to alter
  the explanation for an abend AEXZ to add module
  DFHMQTRU to the list of modules which issue this abend.
  

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:

  UK46578

Modules/Macros

•    CHAPT023 DFHMQINT DFHMQTRU DFH77624
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R500 PSY UK46578

     UP09/05/19 P F905

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.