PH20409: ABEND0C4 IN DFHFCRR DURING LOSTLOCKS RECOVERY

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Customer received ABEND0C4 in DFHFCRR at x'398E' ( Actually at
  X'398A' since it was a PIC4 ABEND ).  We are attempting to
  store into a FLLB ( File control locks locator block ) which
  has not been initialized. Because it is 00000000, CICS abends.
  CICS issues a getmain in DFHFCRR for an FLLB control block.
  But, we are coming straight into Lost Locks Recovery and assume
  we have already issued the getmain. The IFGINQRC + x'14'
  indicates there is 1 dataset in lostlocks.
  
  Additional Symptom(s) Search Keyword(s): KIXREVBDB
  TS003029567
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: While CICS is processing RLS lost locks *
  *                      recovery, message 'DFHFC0001 An abend   *
  *                      (code 0C4/AKEA) has occurred at offset  *
  *                      X'398E' in module DFHFCRR' will be      *
  *                      issued.                                 *
  ****************************************************************
  After CICS has detected that the SMSVSAM server has failed and
  restarted, it will begin RLS dynamic restart. In this scenario,
  during the restart process it is detected that CICS also needs
  to run lost locks recovery. This can be due to the IGWLOCK00
  lock structure having been deleted. When processing lost locks
  recovery CICS will need to access or recreate file control locks
  locator blocks (FLLBs). During the processing of lost locks the
  FLLB_pointer is used to write to a FLLB that has not yet been
  addressed, and so CICS abends with an 0C4 and issues message
  DFHFC0001.
  
  Additional Keywords: AbendAKEA Abend0C4 FC0001 398E FCRR
  DFHFC0555 msgDFHFC0555 FC0555
  

Problem conclusion

• DFHFCRR has been altered to ensure that FLLB_POINTER is not
  used to write to a FLLB when it is not necessary.
  

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:

  UI67846

Modules/Macros

• DFHFCRR
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R200 PSY UI67846

     UP20/02/14 P F002 ¢

Fix is available

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