PK45925: CMAS SHUTDOWN MAY BE SLOW DURING BAS TERMINATION FOR A CICSPLEX

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CMAS shutdown may be slow when terminating the BAS component
  due to the unnecessary freeing of BAS association blocks for
  each CICSplex.  The CMAS EYULOG will contain the following
  messages for each CICSplex that requires BAS termination.
  .
  EYUBI0006I cmasname BAS termination for CICSplex plexname has
             started
  EYUBI0007I cmasname BAS termination for CICSplex plexname is
             complete
  .
  Method BMTM (BAS Management Plex Termination) calls subroutine
  FREE_ASSOC to free BAS association blocks for the CICSplex that
  is terminating.  This is required if a CICSplex is removed while
  the CMAS is active, but is not necessary if the CMAS is
  terminating.
  .
  Additional Symptom(s) Search Keyword(s): performance terminated
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICSPlex SM V3R2M0 Users                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: CMAS termination may be slow when BAS   *
  *                      is used.                                *
  ****************************************************************
  * RECOMMENDATION: After applying the PTF that resolves this    *
  *                 APAR, all CMASes must be restarted.  Note    *
  *                 that the restarts do not need to occur at    *
  *                 the same time.                               *
  ****************************************************************
  When BAS is used in a CPSM environment, each CMAS builds data
  structures in the BAS dataspace matching the BAS definitions
  that exist for a specific CICSplex in the data repository
  (EYUDREP).  When the CMAS terminates, or if the CICSplex is
  removed from the EYUDREP, method EYU0BIBD (BIBD) is called to
  perform BAS termination for the CICSplex.  BIBD issues message
  EYUBI0006I on entry and EYUBI0007I on exit.  The text of these
  messages is as follows:
  
    EYUBI0006I  BAS termination for CICSplex <plexname> has
                started
  
    EYUBI0007I  BAS termination for CICSplex <plexname> is
                complete
  
  BIBD calls method EYU0BMTM (BMTM) to perform cleanup for the
  CICSplex.  As part of the cleanup process BMTM calls method
  EYU0BMZR (BMZR) to remove the data structures from the BAS
  dataspace.  Depending upon the number of BAS definitions for
  the CICSplex, this process can consume a great deal of time.
  
  When BMTM is called for removal of a CICSplex from the EYUDREP,
  BMZR must be called so that unused storage can be recovered
  from the BAS dataspace.  However, when BMTM is called for CMAS
  termination, it is not necessary to recover the storage from
  the BAS dataspace, since it will be deleted as part of CMAS
  termination, and re-created when the CMAS is restarted.
  

Problem conclusion

• BMTM has been updated to bypass the call to BMZR when called
  during CMAS termination.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

  PK43481

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

  UK27522

Modules/Macros

•    EYU0BMTM
  

Fix information

• Fixed component name

  CICSTS 3.X Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R50M PSY UK27522

     UP07/08/01 P F707

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.