IJ49011: CICS EXPLORER, CPU SPIKE AND MANY CWWU TRANSACTIONS

APAR status

• Closed as program error.

Error description

• A CPU spike was noted via CICS Explorer service data.
  There were a large number of CICSRGN requests attributed to a
  specific userid.
  There were also a high number of CWWU transactions and several
  of the CWWU transactions were taking over a second of CPU time.
  It looked like there were more requests than necessary being
  made by CICS Explorer to provide the 'decorators' in the
  CICSplex Explorer.
  

Local fix

Problem summary

• CICS Explorer requests model objects for regions by activating
  the model and then deactivates in order to trigger a CPSM result
   set discard. Since APAR IJ30410, the model contents are thrown
  away.  The subsequent attempt to read the model contents
  triggers a new set of model activation requests.
  

Problem conclusion

• CICS Explorer requests model objects for regions by activating
  the model and then deactivates in order to trigger a CPSM result
   set discard. The model contents are now retained and the
   subsequent attempt to read the model contents uses the retained
   contents.  This has reduced the amount of CPU being used.
  
  This fix will be made available in Version 5.5.33 (32.0.5) of
  the CICS Explorer.
  
  For installation instructions please see: Ordering maintenance
  for IBM CICS Explorer and CICS Explorer plug-ins
  https://www.ibm.com/support/pages/node/623031
  

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:

Fix information

• Fixed component name

  CICS EXPLORER V

• Fixed component ID

  5655Y0401

Applicable component levels