PH06406: 00C90101 DSNKCEST:2001 OR 00C20305 DSNB1CPP+2504 ABEND AFTER A FAILED DFSMSHSM RECALL.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• 00C90101 DSNKCEST:2001 or 00C20305 DSNB1CPP+2504 abend after a
  failed DFSMShsm recall of some of the pieces of a multi-piece
  Db2 object.
  Db2 may also come down, if this failure occurs during a Db2
  "Must Complete" activity.
  This abend would only occur when the "LEVELID UPDATE FREQ"
  (DLDFREQ subsystem parameter) value is set to "NO" or a zero
  value.
  RC00C90101
  MODDSNKCEST
  ERQUAL2001
  RC00C20305
  MODDSNB1CPP
  OFFSET2504
  MSGDSNV086E
  RC00D94001
  ABEND04F
  

Local fix

• Set the "LEVELID UPDATE FREQ" (DLDFREQ subsystem parameter)
  value to "YES" or a non-zero value, to enable down-level
  detection.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Db2 11 and Db2 12 for z/OS users.        *
  ****************************************************************
  * PROBLEM DESCRIPTION: When a DFSMShsm recall fails on a       *
  *                      multi-piece non-partitioned object,     *
  *                      Db2 may abend if DLDFREQ is set to 0.   *
  ****************************************************************
  * RECOMMENDATION: Apply corrective PTF when available.         *
  ****************************************************************
  The problem occurs because there is a timing window where the
  catalog entry for the dataset that is being recalled doesn't
  exist. When this window is hit, DSM will not see the dataset in
  question and will fail to report the correct number of PB0s,
  even if one was already created. Thus, the PB0 will not be
  opened and a later attempt to extend into that space will
  cause Db2 to abend due to a PB0 already existing there.
  

Problem conclusion

• The fix is to compare the created PB0s to the number reported by
  DSM to make sure that it is consistent. Furthermore, we enforce
  the RNA failure when HPGHPREF exceeds the last open dataset
  whether or not the SYSPDFRQ ZPARM is set.
  

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:

  UI61479 UI61481

Modules/Macros

•    DSNB1OPP
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RB10 PSY UI61481

     UP19/03/12 P F903

• RC10 PSY UI61479

     UP19/03/12 P F903

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.