OA43370: PREDICTIVE FAILURE ANALYSIS PFA ENHANCEMENT TO INCREASE DETECTION OF VALID EXCEPTIONS REDUCE EXC DIRECTORIES

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Predictive Failure Analysis (PFA) enhancements as follows:
  
  1.PFA_ENQUEUE_REQUEST_RATE: The default STDDEVLOW value is now
    8.
  2.PFA_COMMON_STORAGE_USAGE: Reduce exceptions that occasionally
    occurred shortly after a new model was created.
  3.PFA_MESSAGE_ARRIVAL_RATE, PFA_ENQUEUE_REQUEST_RATE, and
    PFA_SMF_ARRIVAL_RATE:  Improved logic to issue valid
                           exceptions.
  4.Reduce the creation of EXC_timestamp directories for
    subsequent, suppressed exceptions for all checks.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of HBB7780 and HBB7790 exploiting  *
  *                 the Predictive Failure Analysis (PFA).       *
  ****************************************************************
  * PROBLEM DESCRIPTION: PREDICTIVE FAILURE ANALYSIS (PFA)       *
  *                      enhancements for fine tuning.           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Following enhancements are made to PFA.
  1.PFA_ENQUEUE_REQUEST_RATE: The default STDDEVLOW value is now 8
  which will reduce  too low  exceptions.
  2.PFA_COMMON_STORAGE_USAGE: Reduce exceptions that occasionally
  occurred shortly after a new model was created.
  3.PFA_MESSAGE_ARRIVAL_RATE, PFA_ENQUEUE_REQUEST_RATE, and
  PFA_SMF_ARRIVAL_RATE:  Improved logic to issue valid exceptions
  so that false positives are reduced and valid exceptions are
  not missed.
  4.Reduce the creation of EXC_timestamp directories for
  subsequent suppressed exceptions for all checks.
  

Problem conclusion

• Code has been changed to implement the said enhancements.
  

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:

  UA73065 UA73066

Modules/Macros

• AIRHMEER AIRHMEMA AIRHMESA AIRHMLAP AIRHMMAC
  AIRHMMAO AIRHMMAP AIRHMMAW AIRHMMON
  

Fix information

• Fixed component name

  Z/OS PFA

• Fixed component ID

  5752SCPFA

Applicable component levels

• R780 PSY UA73065

     UP14/04/16 P F404

• R790 PSY UA73066

     UP14/04/16 P F404

Fix is available

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