OA61323: ABEND878 DUE TO CIST CONTROL BLOCK BUILD UP IN INITIATOR ADDRESS SPACE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• An ABEND878 can occur due to ELSQA sp249 storage shortage when
  an initiator address space sees a build up of CIST control
  blocks over time.  The CIST is a table associated to the SHOWCAT
  and SHOWCB macros.
  
  |  CIST.. .......}.  |
  |  .........dsname.  |
  
  In Initiator address spaces which persist, these CIST control
  blocks will remain orphaned instead while new CIST blocks are
  acquired anew.   Over time if the Initiatior is not restarted or
  drained, this accumulation can lead to an abend878
  
  
  ADDITIONAL SYMPTOMS:
  CATKEYS: CAT2021 CATABEND
  

Local fix

• BYPASS/CIRCUMVENTION:
  VSM CHECKREGIONLOSS in DIAGxx can be used to automatically
  releive storage issues in the Initiator by setting a threshold
  and automatically recycling the initiator when storage begins to
  creep.  VSM CHECKREGIONLOSS(256K,10M) is a default and can be
  increased by 10M if found it is recycling too often
  
  RECOVERY ACTION:
  Drain initiators if abend878s are actively occurring
  
  WLM Managed
  $P XEQ
  P INIT,A=     (D A,INIT to find init#)
  $S XEQ        (once initiator fully inactive in SDSF)
  
  JES2 Managed
  $PInn         (where nn is init #)
  $SInn
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * HDZ220 and up users who use VSAM Control                     *
  * Interval (CI) RBAs to address records                        *
  * instead of the ds name, or those who use                     *
  * vendor program IAM.                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• The Catalog component has been updated to ensure that these
  control blocks are freed at the end of the step.
  

Temporary fix

• *********
  * HIPER *
  *********
  APPLY ++APAR AND PROVIDE FEEDBACK.
  

Comments

APAR Information

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

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

  UJ07117 UJ07118 UJ07119 UJ07120

Modules/Macros

• IGG0CLH1
  

Fix information

• Fixed component name

  ICF CATALOG & I

• Fixed component ID

  5695DF105

Applicable component levels

• R250 PSY UJ07119

     UP21/12/08 P F112 ¢

• R240 PSY UJ07118

     UP21/12/08 P F112 ¢

• R230 PSY UJ07117

     UP21/12/08 P F112 ¢

• R220 PSY UJ07120

     UP21/12/09 P F112 ¢

Fix is available

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