OA45966: MEDIA MANAGER MAY SKIP RECORDS WHEN RETRYING A FAILED CHANNEL PROGRAM.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• In some rare cases when Media Manager retries a failed channel
  program, it may not read or write all of the blocks that were
  requested.  Media Manager may terminate the request early. This
  can occur for MIDAW or zHPF channel programs if redriven.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All dfsms users at HDZ1C10 or higher         *
  ****************************************************************
  * PROBLEM DESCRIPTION: after a media manager retryable IO      *
  *                      error, a flag is left on which may      *
  *                      cause the retry of the failed IO to     *
  *                      terminate early.  this may cause IO to  *
  *                      be incorrectly reported as complete.    *
  *                      Updates writes or reads may have been   *
  *                      skipped.                                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• when calculating space for a channel program and a CI is added
  to the channel program, the bit zzpllst will be set off.  This
  will clear this bit in case it was set on in a prior channel
  program build path.
   KEYWORDS: ZHPF/K
             DATALOSS
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UA74757 UA74756 UA74758

Modules/Macros

• ICYBLD64 ICYPIO64
  

Fix information

• Fixed component name

  DFSMS MEDIA MAN

• Fixed component ID

  5695DF126

Applicable component levels

• RC10 PSY UA74756

     UP14/09/11 P F409 Ž

• RD10 PSY UA74757

     UP14/09/11 P F409 Ž

• R210 PSY UA74758

     UP14/09/11 P F409 Ž

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.