PH32792: ABEND X'030F' IN MODULE DFHSMGF AFTER LIBERTY JVMSERVER ENABLED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A Liberty JVMSERVER is abnormally terminated whilst processing
  JTA transactions.  When restarted JTA recovery is triggered for
  the inflight transactions.  Multiple CJLR tasks run successfully
  as system tasks under the region user ID.
  
  However a further CJLR task is incorrectly attached as user task
  under the default user ID.  If the default user ID is not
  permitted to run CJLR then the task fails.  The JVMERR file
  shows a BUILD_TRANSACTION call failed with reason MSG_ISSUED.
  
  The problem is that CICS failed to classify a JTA related
  Runnable as being a system task.
  
  Following the failure the error handling code attempts two
  freemains of the SJLRB control block.  The second fails with
  code X'030F' in module DFHSMGF.
  

Local fix

• Alternatively, the customer can circumvent the problem by
  temporarily allowing their default user ID to run CJLR
  transactions.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: On restart of a JVMSERVER with in-doubt *
  *                      JTA transactions, abend X'030F' occurs  *
  *                      in module DFHSMGF.                      *
  ****************************************************************
  During start of a Liberty JVMSERVER, previous 'in-doubt' JTA
  transactions are identified and recovered appropriately. For
  CICS resources, this results in CICS supplied transaction CJLR
  being run. This runs as a system task to locate the xid's
  related to the JTA transaction. However to complete the recovery
  process, CJLR is issued again, incorrectly running under the
  regions default user id. If the default user id used is not
  authorised to run CJLR, the recovery will fail and authorisation
  errors may be seen :
   - CWWKE0700W in the server message log, including 'user ID
      not authorised'
   - RACF authorisation failure ICH408I for default user id, and
      transaction CJLR
  
  As a result of the failure, due to authorized error, the request
  block for this action, SJLRB, is freed in  DFHSJXM. However, due
  to the error DFHSJJS later attempts to free the SJLRB again.
  This uses DFHSMGF. Due to the block previously being freed, the
  freemain fails, with abend X'030F' in DFHSMGF with message
  DFHSM0002 :
    +DFHSM0002 A severe error (code X'030F') has occurred in
     module DFHSMGF.
  

Problem conclusion

• CICS has been changed to ensure that the CJLR task is attached
  as a system task.
  

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:

  UI75209 UI75210

Modules/Macros

• DFJ@H387
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R200 PSY UI75210

     UP21/05/06 P F105

• R300 PSY UI75209

     UP21/05/05 P F105

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.