PM59442: DFHXM0002 A SEVERE ERROR (CODE X'1405') HAS OCCURRED IN MODULE DFHXMXE.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• You are receiving the following error messages when attempting
  to do the routine GET_XM_LOCK:
  DFHXM0002 A SEVERE ERROR (CODE X'1405') HAS OCCURRED IN MODULE
  DFHXMXE.
  DFHTD0002 A SEVERE ERROR (CODE X'F6AA') HAS OCCURRED IN MODULE
  DFHTDA.
  DFHTD0001 AN ABEND (CODE 0C4/AKEA) HAS OCCURRED AT OFFSET
  X'03FE' IN MODULE DFHTDA.
  We found the TI task is doing a statistics collection and it
  DFHXMST RECORD_THE_TCLASSES, in here it obtains the XM lock.
  In record_the_tclasses is a loop and it checks the size of the
  buffer to write the statistics record out, if it exceeds the
  buffer it has to write out the record, which results in a call
  to DFHSTST for record_statistics and then a write_buffer_to_SMF.
  It happens that the write to SMF suffers a SMF_ERROR and then
  issue a message and dump for DFHST0103.
  DFHMEME is driven to write the message, but the customer has an
  XMEOUT exit which will also attempt to write the message to TD
  queue XCNS.
  DFHTDA is being invoked without a TCA and it will need to get
  the TCA, it does a DFHXMXE GET_TXN_ENVIRONMENT call which then
  attempts to obtain the XM lock again.
  Addtional Keywords: KIXREVBDB
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: DFHXM0002 A severe error (code x'1405') *
  *                      has occurred in module DFHXMXE.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The TI task has issued a statistics collection call. DFHXMST is
  attempting to write out the TClass statistics records, which
  requires the obtaining of the XM lock. The current TClass
  statistics buffer is being written out to SMF, when SMF suffers
  an error. CICS will issue message DFHST0103. The customer has an
  XMEOUT exit active to write this message out to a TD queue. This
  requires a call to DFHTDA and because DFHTDA has been called
  without a TCA, DFHTDA issues a DFHXMXE GET_TXN_ENVIRONMENT call
  and this call then attempts to obtain the XM lock again, so
  resulting in the DFHXM0002 severe error.
  
  Keywords: msgDFHXM0002 XM0002 msgDFHTD0002 TD0002
            abend0C4 F6AA 1405
  

Problem conclusion

• DFHXMST has been changed to release the XM lock when writing out
  the SMF buffer and to re-obtain it afterwards. It has also been
  changed to point to the next correct TClass statistics record
  following the SMF buffer write.
  

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:

  UK79691 UK79692

Modules/Macros

•    DESXMST  DFHXMST  DFHXMSTC
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R600 PSY UK79691

     UP12/07/02 P F206

• R700 PSY UK79692

     UP12/07/02 P F206

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.