PH32429: ABEND04E RC00E50001 AT DSNIDM .DSNB1CPL WITH PH26513 APPLIED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND04E RC00E50001 DSNIDM .DSNB1CPL+14C8 with PH26513/UI72556
  applied
  ABEND04E RC00E50001 DSNIDM .DSNB1CPL+1542 with PH26513/UI72557
  applied
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All Db2 11 for z/OS and Db2 12 for z/OS                      *
  * data sharing users using GBPCACHE ALL                        *
  * table spaces or indexes, with PH26513                        *
  * (UI72556 or UI72557) applied.                                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * ABEND04E RC00E50001                                          *
  * DSNIDM .DSNB1CPL+14C8 with                                   *
  * PH26513/UI72556 applied,                                     *
  * ABEND04E RC00E50001                                          *
  * DSNIDM .DSNB1CPL+1542 with                                   *
  * PH26513/UI72557 applied.                                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply corrective PTF when available                          *
  ****************************************************************
  The exclusive castout quiesce latch has been changed to be at
  the partition level by the fix for PH26513, and it shares the
  PB0 latch recovery pointer with the partition latch.
  The ABEND04E RC00E5001 may occurr during the GBP-dependent
  cpnversion of a pageset or partition defined with the
  GBPCACHE ALL option because this latch was requested when it
  was already held.
  When converting pageset or partition from GBP-depedent to
  non GBP-depedent, the exclusive castout quiesce latch will be
  acquired. This process needs to cast out all the pages from
  the object and possibly purge them from the GBP. For table
  spaces or indexes defined with the GBPCACHE ALL option, Db2
  also caches clean pages and acquires the partition latch
  when removing clean pages from the GBP. Thus the PB0 latch
  recovery pointer could have been cleared after returning to
  the GBP-dependent conversion. This will drive Db2 to obtain
  the exclusive castout quiesce latch again and cause the
  ABEND04E RC00E50001.
  

Problem conclusion

• Db2 code has been modified to not clear the PB0 latch recovery
  pointer when releasing the partition latch if the exclusive
  castout quiesce latch is being held.
  

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:

  010PC2Ÿ 010PC2Ÿ UI73532 UI73533

Modules/Macros

• DSNB5DEL DSNB1LRR
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RB10 PSY UI73532

     UP21/01/23 P F101 {

• RC10 PSY UI73533

     UP21/01/23 P F101 {

Fix is available

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