OA13039: BROWSE OF SMS DATA SET WITH SMALL BLOCKSIZE, AND A DATA CLASS THAT ALLOWS MULTIPLE VOLUMES GETS INTERMITTENT FAILURES.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A variety of problems can occur in ISPF browse during a MAX
  SCROLL DOWN, when the data
  set is SMS-managed, and DATACLAS specifies VOLUME COUNT > 1.
  One such error is:
  IEC145I 413-1C,IFG0193A
  ABEND 0c4 is also possible (ISRBCDO + x'3FA' is one place
  where it has occurred).
    The problem occurs when the BLKSIZE is small.  In this case
  the block size was 1638 (for an lrecl=91 data set), but other
  relatively small block sizes will fail.
  

Local fix

• Copy the data to a data set with a larger blocksize.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All ISPF users                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: BROWSE dataset with small blocksize and *
  *                      DATACLAS specifies VOLUME COUNT > 2.    *
  *                      BROWSE may fail with MSGIEC145I 413-1C  *
  *                      or ABEND0C4 in ISRBCDO after DOWN MAX   *
  *                      scroll command.                         *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF.                      *
  ****************************************************************
  ISPF was returning a volume count to browse larger than the
  number of volumes in use.
  The small blocksize caused a BROWSE table to be created with
  uninitialized storage. With the large volume count, the
  uninitialized storage was referenced which could cause an
  allocation for a volume sequence that did not exist resulting in
  the open error.
  

Problem conclusion

• ISPF is changed to correctly generate the number of used volumes
  when a candidate volume list greater than the number of used
  volumes is returned by the catalog.
  

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:

  UA20963 UA20964 UA20965

Modules/Macros

• ISRSVCBD ISRUCT   ISRUDT   SEGUDDC
  

Fix information

• Fixed component name

  ISPF V4 (PDF/SC

• Fixed component ID

  565504202

Applicable component levels

• RD02 PSY UA20963

     UP05/09/17 P F509

• RE02 PSY UA20964

     UP05/09/17 P F509

• RF02 PSY UA20965

     UP05/09/17 P F509

Fix is available

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