PH09764: ABEND04E RC00E2000C IN DSNSVSVB OFFSET00A54 AS DB2 ADMF AGL 64 POOL FULL WITH CUB BLOCKS 19/03/14 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND04E 00E2000C in DSNSVSVB OFFSET00A54 was seen, as the Db2
  ADMF AGL 64 pool was full with CUB blocks. The pool was filled
  with approximately 516K ICUB blocks of x'400' bytes in length,
  allocated from module DSNICUBC OFFSET164E ( UI58987 ).
  Only cached dynamic statement CUBs are involved. So this is
  unique to release(deallocate) applications, with a low commit
  frequency and keepdynamic(yes).
  ADDITIONAL SYMPTOMS: ABEND04E RC00C90101 DSNKINSL
  ERQUAL500E 500E while performing an UPDATE that
  moves a rid to a new partition.
  LOOP or LOOPING in DSNICMT2
  

Local fix

• Rebind with RELEASE(COMMIT)
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Db2 11 and 12 for z/OS users that have   *
  *                 an application bound with KEEPDYNAMIC(YES)   *
  *                 and RELEASE(DEALLOCATE) with low commit      *
  *                 frequency.                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND04E RC00E2000C IN DSNSVSVB         *
  *                      OFFSET00A54 OR ABEND04E RC00C90101      *
  *                      in DSNKINSL ERQUAL 500E                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When Db2 fixed the problem reported in PH01093(UI58987/UI58988),
  the outdated internal structures(such as cursor blocks(CUBs))
  were marked invalid and the associated storage released at
  commit time. However, for an application with a low commit
  frequency, then all the invalid internal structures(such as
  CUBs) may stay resident in the storage pool and result in
  ABND=04E-00E2000C in DSNSVSVB OR ABND=04E-00C90101 in DSNKINSL
  occurs during cross-partition UPDATE for a partitioned
  tablespace.
  

Problem conclusion

• Fixes made in Db2 to correctly invalidate the outdated internal
  structures only when this specific scenario is seen.
  

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:

  UI63329 UI63330

Modules/Macros

•    DSNGDCPD DSNIBCTD DSNICMTC DSNICMT2 DSNICUBC
  DSNIPSBL DSNIPSI  DSNITCUS
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RB10 PSY UI63330

     UP19/06/04 P F906 Ø

• RC10 PSY UI63329

     UP19/06/04 P F906 Ø

Fix is available

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