OA65951: ABEND878-10 GZDSSLM BELOW THE 16M LINE PRIVATE STORAGE EXHAUSTED ZDMF/K

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• GZD3110E GZDSSLM  task has abended.
  GZD3111E - PSW at time of error: 070C1000 8154ADE0 0002000D
  00000000
  GZD3112E - ABEND=S878  REASON=00000010 INTC=0D PASN=0299
  SASN=0299
  GZD3113E - PGM=UNKNOWN  Load Point=         Offset=
  GZD3114E - Current CSECT=UNKNOWN
  GZD3115E - Data at PSW: 0154ADDA - 00181610 0A0D98DC D0088910
  GZD3116E - GPR 00-03 84000000 84878000 00000004 00002A02
  GZD3116E - GPR 04-07 00000000 00000005 00000002 00000878
  GZD3116E - GPR 08-11 00000010 00048300 25D57FA0 00000878
  GZD3116E - GPR 12-15 8154ADA8 7FF17008 A414C530 00000010
  
  Symptoms from TS016253084:
  IW4000I FETCH FOR MODULE IDCDE01  FROM DDNAME *VLF*
          FAILED BECAUSE INSUFFICIENT STORAGE WAS AVAILABLE.
  CSV031I LIBRARY ACCESS FAILED FOR MODULE IDCDE01 ,
          RETURN CODE 24, REASON CODE 26080021, DDNAME *LNKLST*
  CSV028I ABEND106-0C  JOBNAME=ZDMF      STEPNAME=ZDMF
  GZD3110E GZDALLOC task has abended.
  GZD3111E - PSW at time of error: 070C1000 813AF6DA 0002000D
  00000000
  GZD3112E - ABEND=S106  REASON=0000000C INTC=0D PASN=0827
             SASN=0827
  GZD3113E - PGM=UNKNOWN  Load Point=         Offset=
  GZD3114E - Current CSECT=UNKNOWN
  GZD3115E - Data at PSW: 013AF6D4 - 8400181E 0A0D18FB 180C181D
  GZD3116E - GPR 00-03 00002000 84106000 26080021 0000000C
  GZD3116E - GPR 04-07 00000014 009C64B0 7EFE8000 0000000C
  GZD3116E - GPR 08-11 7EFE8068 013AFC00 00000024 00000014
  GZD3116E - GPR 12-15 00000000 7EFE8068 84106000 0000000C
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All ZDMF customers.                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: Various below the line storage shortage *
  *                      issues including the following:         *
  *                                                              *
  *                      o GZDSSLM ABEND S878-10 during group    *
  *                      activation.                             *
  *                                                              *
  *                      o IEW4000I FETCH FOR MODULE IDCDE01     *
  *                      FROM DDNAME *VLF*    FAILED BECAUSE     *
  *                       INSUFFICIENT STORAGE WAS AVAILABLE.    *
  *                      CSV031I LIBRARY ACCESS FAILED FOR       *
  *                      MODULE IDCDE01 , RETURN CODE 24, REASON *
  *                       CODE 26080021, DDNAME *LNKLST*         *
  *                      CSV028I ABEND106-0C  JOBNAME=ZDMF       *
  *                            STEPNAME=ZDMF                     *
  *                      GZD3110E GZDALLOC task has abended.     *
  ****************************************************************
  ZDMF leaks below the line storage in three instances
  1. GZDDBA leaves an orphan DBCTL control block after
  initialization of a data base or volume extent map file. Over
  time deletion and reallocation of extent map files may build up
  a large pool of orphaned below the line DBCTL blocks.
  
  2. GZDPARS during Group activation does not issue FREEPOOL after
  processing the INCLUDEDSN parameter of a GROUP SET statement.
  Over time orphaned QSAM buffers accumulate.
  
  3. Similar issue to 2 occurs when processing an EXCLUDEDSN
  GROUP SET parameter. In addition, separate group exclude tables
  get allocated for each input data set name request. These
  exclude tables are never freed when the data set requests are
  deleted. Over time, the these orphaned exclude tables
  accumulate.
  
  4.Repeated activations of a Group without an intervening delete
  causes orphaned high private storage.  E.g., Group activation
  with Simulate followed by Group Activation (or another Group
  activation with Simulate). Multiple Group Trace buffers get
  allocated and lost.
  

Problem conclusion

• 1. GZDDBA is modified to not keep the DBTL block used for
  database initialization.
  2. GZDPARS is modified to defined RMODE31=BUFF for the QSAM DCBE
  so that the QSAM buffer pool is automatically freed when the DCB
  is closed.
  3. The change to GZDPARS for 2 is also effective for the
  EXCLUDEDSN parameter processing. In addition, GZDPARS is
  modified to allocate a single EXCLUDE data set table for each
  GROUP Set control that uses an EXLUDEDSN parameter. GZDPARS
  established a chain of EXCLUDEDSN tables in the @ACTPLST
  control block. Then whenever the @ACTPLST is reset or deleted
  the EXCLUDEDSN tables are also deleted.
  4. GZDACT0 is modified to skip allocated of group trace buffer
  if the group already has a group trace buffer allocated.
  

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:

  UJ95731

Modules/Macros

• GZDACT0  GZDDBA   GZDDBLD  GZDPARS  GZDSSLM  GZDUTIL
  

Fix information

• Fixed component name

  ZDMF

• Fixed component ID

  ZDMF00001

Applicable component levels

• R341 PSY UJ95731

     UP24/08/09 P F408

Fix is available

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