PH44360: CEMT TASK RUNS FOR SEVERAL HOURS USING UP CPU

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• During a run of CICS TS, there was a CPU issue where the CEMT
  transaction ran for several hours using up quite a bit of the
  CPU.  This in turn resulted in other jobs having to wait for
  processor including the CPSM workload routing tasks. The QR TCB
  was busy with running the CEMT transaction throughout the day
  until it relinquished control long enough for a routed task to
  gain access to the QR TCB and to be purged.
  
  Additional Symptom(s) Search Keyword(s):
  DFHEMTD DFHEMT56 loop looping loops
  INQUIRE-SYSTEM INQUIRE_SYSTEM
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: CEMT transaction in a never yielding    *
  *                      loop.                                   *
  ****************************************************************
  A CEMT transaction is seen to be running for hours and the CPU
  used by the CICS region is increasing rapidly.
  It is possible to get this loop when CEMT INQUIRE is issued
  and the command contains an argument/keyword.
  DFHEMT56 is the program which will look for a keyword match, but
  one is never found and the browse for one continues for ever.
  The CICS terminal never returned to the user and it is observed
  that the CEMT transaction did not complete.
  

Problem conclusion

• DFHEMT56 has been changed to ensure when a keyword match is not
  found that the browse token is still incremented and so avoid
  the loop.
  

Temporary fix

Comments

• ×**** PE22/07/27 FIX IN ERROR. SEE APAR PH48266  FOR DESCRIPTION
  

APAR Information

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

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

  PH47445 UI81473

Modules/Macros

• DFHEMT56
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R300 PSY UI81473

     UP22/07/15 P F207

Fix is available

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