PK78546: KB10425: EMERGENCY RESTART DOESN'T RELEASE SYSTEM BUFFER

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• After emergency restart, bunch of system buffer are in use and
  not released.
  Subroutines of DBFERDB0 which get system buffer from DBFCGAB0
  need to release it.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All IMSFP V11 users.                         *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: DBFBPNS0 gets U1011 in emergency        *
  *                      restart or in tracking process of       *
  *                      FDBR and XRF alternate IMS because      *
  *                      DMHRs are not freed properly in         *
  *                      DMHR hashing process.                   *
  ****************************************************************
  * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
  ****************************************************************
  When 5950 update log is read, DMHR is passed from DBFCGAB0
  but when 5950 log for the same area same RBA comes again,
  old DMHR is not needed anymore and need to be released for
  next use. This logic was not working and DMHRs in use
  were accumulated and at last, ECSA became full. It caused
  U1011 abend of DBFBPNS0.
  

Problem conclusion

• GEN:
  KEYWORDS:
  
  *** END IMS KEYWORDS ***
  In 64 bit buffer mode, the number of DMHR is not limitted.
  But it is needed to use hashing logic. So, 1024 slot was
  for hasing slot like shared VSO. It made hasing logic for
  64 bit buffer mode available.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UK46051 016AC4Ÿ

Modules/Macros

• DBFCHKP0 DBFDBLS0 DBFDLSR0 DBFDMHR  DBFEHSH
  DBFEHSH0 DBFERDB0 DBFEROC0 DBFERST0 DBFERSY0 DBFERS10 DBFESCD
  DBFNRST0 DFSCHKPT
  

Fix information

• Fixed component name

  IMS V11

• Fixed component ID

  5635A0200

Applicable component levels

• R100 PSY UK46051

     UP09/05/01 P F904 Ž

Fix is available

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