PH18979: PERFORMANCE DEGRADATION DUE TO STORAGE OBTAIN/RELEASE PROCESSING

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• |Component ID|5655P0300|
  |Release Level|120|
  |FMID|H29F120|
  |APAR Type|Field|
  |External symptom|PERF|
  
  ABSTRACT
  Performance degradation due to STORAGE OBTAIN/RELEASE processing
  
  ERROR DESCRIPTION
  If processing for an editproc routine built using the
  encryption/compression router routine DECENADV is terminated
  due to an
  ABEND unrelated to the editproc, such as an ABEND222 or
  ABEND13E, an
  element allocated from a cell pool may not be returned for
  reuse, and
  becomes orphaned (allocated but no owner).
  
  The cell pool is allocated in DB2 DBM1 private storage with a
  fixed
  number of elements (to prevent excessive storage use).  If
  enough
  elements are orphaned the exit is forced to issue STORAGE
  OBTAIN and
  RELEASE requests, which may impact performance until  the DB2
  subsystem is recycled.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users.                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: If processing for an editproc routine   *
  *                      built using the encryption/compression  *
  *                      router routine DECENADV is terminated   *
  *                      due to an ABEND unrelated to the        *
  *                      editproc, such as an ABEND222 or        *
  *                      ABEND13E, an element allocated from a   *
  *                      cell pool may not be returned for       *
  *                      reuse, and becomes orphaned (allocated  *
  *                      but no owner).                          *
  *                                                              *
  *                      The cell pool is allocated in DB2 DBM1  *
  *                      private storage with a fixed number of  *
  *                      elements (to prevent excessive storage  *
  *                      use). If enough elements are orphaned   *
  *                      the exit is forced to issue STORAGE     *
  *                      OBTAIN and RELEASE requests, which may  *
  *                      impact performance until the DB2        *
  *                      subsystem is recycled.                  *
  ****************************************************************
  .
  

Problem conclusion

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:

  UI69159

Modules/Macros

• DECENADV
  

Fix information

• Fixed component name

  DATA ENCRYPTION

• Fixed component ID

  5655P0300

Applicable component levels

• R120 PSY UI69159

     UP20/04/24 P F004

Fix is available

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