PM14139: DUMP FORMATTER ENCOUNTERING LOOP WHEN FORMATTING OUT BUFFERS AND TEMP STORAGE INFORMATION

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The dump formatter expects to iterate through a buffer content,
  formatting out each record in it, and indexing the pointer to
  the start of the next record until the bca_nasp (end of records)
  point is reached. But since the next record after the 1st two
  records contains nulls in its xrh header, the logic perpetually
  adds 0 to the pointer, and we end up in a loop trying to format
  the remaining storage in the buffer. the dump formatter should
  be able to avoid doing this.
  Additonal keywords: Buffer , Loop , Null , Zero , Temp Storage ,
  Temporary storage , TS , Format ,
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: Loop in DFHTSDUF processing the TS      *
  *                      verbexit.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  It is possible that a CICS system dump is taken just after a
  temporary storage CI has been read into a buffer, but before the
  task that owns the buffer is redispatched. This means that the
  value of the next segment pointer still addresses the next
  available segment of the old control interval (that is, the
  previous buffer contents). Running 'TS=1' to summarise the TS
  domain can result in the IPCS verbexit looping if the data
  beyond the last record in the CI contains nulls. Alternatively,
  an abend may occur if the contents are not nulls.
  KEYWORDS: DFHPD660 bca_nasp
  

Problem conclusion

• Temporary storage buffer formatting and checking logic has been
  changed to use the number of records in the CI, rather than the
  next available segment pointer, when iterating through the
  contents of each buffer in a dump.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

  PM14110

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

  UK57339

Modules/Macros

• DESTSAM  DFHTSAM  DFHTSAMC DFHTSDUC DFHTSDUF
  DFHTSDUS
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R600 PSY UK57339

     UP10/06/04 P F006

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.