PI45067: DFHMN0002 A SEVERE ERROR (CODE X'0311') HAS OCCURRED IN MODULE DFHMNSR

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• You are receiving the following message,
  DFHMN0002 A severe error (code X'0311') has occurred in
             module DFHMNSR
  .
  The task was purged while requesting the shared lock on
  MN domain global state. This would have primed a DISASTER
  response into the MNSR Plist, but no error was raised at
  this time, and the PURGE was not propagated. Later, there
  would have been an attempt to unlock the shared lock, which
  would have failed (and was also unnecessary) since we did
  not own the lock. This produced the following exception trace
  entry,
     MN 0311 MNSR  *EXC* Unlock request failed - FUNCTION(LOCK)
          RESPONSE(EXCEPTION) REASON()
  .
  Additional Symptom(s) Search Keyword(s): DFHMN0002 MN0002
  MN_INQ_MONITORING STATE_UNLOCK_S
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: CICS produces the following message:    *
  *                      DFHMN0002 A severe error (code X'0311') *
  *                      has occurred in module DFHMNSR.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A CICS task is purged whilst waiting for the monitoring global
  lock MN_GBLOK, but the purge is not reported. Subsequently, the
  same task attempts to free the same lock but this fails as the
  task does not own the lock. This leads to an MNSR 0311 exception
  trace entry being created and a DFHMN0002 message being issued.
  MN0002 msgDFHMN0002 MNTR_MNSR_UNLOCK abendAEXY
  

Problem conclusion

• DFHMNSR has been changed so that, if a PURGE is returned after
  attempting to obtain the MN_GBLOK lock, the task returns from
  the proc with no further action taken.The purged task will
  abend AEXY.
  

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:

  UI31228 UI31229

Modules/Macros

• DFHMNSR
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R800 PSY UI31228

     UP15/09/24 P F509

• R900 PSY UI31229

     UP15/09/24 P F509

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.