PK15499: HIGH CPU USAGE BY QUERY MONITOR COLLECTOR TASK WHEN ENCOUNTERINGLONG-RUNNING UNIT-OF-WORK. POTENTIAL LOOP OR HANG

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Code is being modified to eliminate potential high CPU usage by
  the Query Monitor collector started task when long-running units
  of work are encountered.
  
  *********************
  ALSO ADDRESSED IN THIS PTF UK10357
  **********************
  POTENTIAL LOOP DURING QM SHUTDOWN PROCESS WHEN SYSTEM SQL
  ACTIVITY IS HIGH.
  *
  If QM is ordered to shut down during a time of high SQL
  activity, it is possible for QM to go into a loop.  Code has
  been modified to eliminate this loop and allow QM to shut down
  normally.  Additional symptom:  Possible loop in CQMMMETR.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of DB2 Query Monitor.                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: Code is being modified to eliminate     *
  *                      potential high CPU usage by the Query   *
  *                      Monitor collector started task when     *
  *                      long-running units of work are          *
  *                      encountered.                            *
  ****************************************************************
  * RECOMMENDATION: APPLY the PTF.                               *
  ****************************************************************
  Code has been changed to correct this condition.
  

Problem conclusion

• APPLY the PTF.
  

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:

  UK10357

Modules/Macros

•    CQM#INTV CQMMALRT CQMMCMDS CQMMESQL CQMMEXCP
  CQMMEXCW CQMMINDB CQMMMETR CQMMSCLN CQMMSQLW CQMMSSQL CQMMSTRM
  CQMTTEXT CQMTTXTW H238210J
  

Fix information

• Fixed component name

  DB2 QUERY MONIT

• Fixed component ID

  5655E6701

Applicable component levels

• R210 PSY UK10357

     UP06/01/12 P F601

Fix is available

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