OA66661: ORPHANED ECSA AFTER SHUTTING DOWN ZDMF ZDMF/K

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Orphaned ECSA after shutting down ZDMF
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All zDMF 3.4.1 customers                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: zDMF shutdown fails to free some ECSA   *
  *                      control blocks, which are not recovered *
  *                      and reused upon restart of zDMF,        *
  *                      resulting in orphaned and unusable      *
  *                      areas of ECSA. The storage will not be  *
  *                      recovered until the next IPL.           *
  *                                                              *
  *                      The problem can be observed from the    *
  *                      SDSF CSR (Common Storage Remaining)     *
  *                      panel which shows ECSA and SWA storage  *
  *                      left behind by jobs that have           *
  *                      terminated without freeing the storage. *
  *                                                              *
  *                      It should be noted that most of the     *
  *                      ECSA and SQA storage left by a          *
  *                      terminated zDMF job are legitimate      *
  *                      persistent ECSA and SQA allocations     *
  *                      that will be recovered and reused upon  *
  *                      restart of the zDMF server.             *
  ****************************************************************
  Orphaned.common storage related to the following:
  1. Loading of an obsolete PC routine.
  2. During shutdown when deleting device blocks, other related
  control blocks were not being deleted.
  3. During cleanup when deleting group blocks, other related
  control blocks were not being deleted.
  4. During certain activation errors, such as error allocating
  a device extent map data set, the error routine to cleanup from
  the error did not delete control blocks related to the group
  being activated.
  

Problem conclusion

• Modules GZDMAIN and GZDCL01 have been modified to correct the
  identified ECSA storage leaks. In addition, the zDMF reference
  manual has been update with documentation describing the ECSA
  and SQA usage and which control blocks and program storage areas
  are expected to persist after a normal zDMF shutdown and be
  recovered an reused upon restart of the zDMF server.
  

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:

  UJ96905

Modules/Macros

• GZDACT4  GZDCL01  GZDMAIN
  

Fix information

• Fixed component name

  ZDMF

• Fixed component ID

  ZDMF00001

Applicable component levels

• R341 PSY UJ96905

     UP25/04/12 P F504

Fix is available

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