PI67278: WORKLOAD TUNING AT DATASHARING LEVEL MAY FAIL IF ONE OF THE MEMBERS HAS DDF TURNED OFF

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When Query Monitor sends (QM) a workload to Query Workload Tuner
  (QWT) for tuning, QM has to tell QWT what database connection to
  use in order to access the EXPLAIN tables. QM will provide
  connection information for a member that QM selects, regardless
  of whether DDF is enabled for that member. If the member that QM
  selects does not have DDF enabled, then workload tuning will
  fail.
  .
  This APAR will do two things:
    1. Users will be able to select, from a "Monitored Database"
  menu in QM, which member of the datasharing group should be used
  for the database connection in QWT when tuning this workload.
    2. If the "Staging Table Connection" the user selects in QM is
  a connection to a member in the datasharing group, then the menu
  mentioned will default to the member that is used for the
  staging table connection.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of IBM DB2 Query Monitor z/OS.         *
  ****************************************************************
  * PROBLEM DESCRIPTION: When Query Monitor sends (QM) a         *
  *                      workload to Query Workload Tuner (QWT)  *
  *                      for tuning, QM has to tell QWT what     *
  *                      database connection to use in order to  *
  *                      access the EXPLAIN tables. QM will      *
  *                      provide connection information for a    *
  *                      member that QM selects, regardless      *
  *                      of whether DDF is enabled for that      *
  *                      member. If the member that QM selects   *
  *                      does not have DDF enabled, then         *
  *                      workload tuning will fail.              *
  *                      This APAR will do two things:           *
  *                        1. Users will be able to select,      *
  *                         from a "Monitored Database" menu in  *
  *                         QM, which member of the datasharing  *
  *                         group should be used for the         *
  *                         database connection in QWT when      *
  *                         tuning this workload.                *
  *                        2. If the "Staging Table Connection"  *
  *                         the user selects in QM is a          *
  *                         connection to a member in the        *
  *                         datasharing group, then the menu     *
  *                         mentioned will default to the        *
  *                         member that is used for the          *
  *                         staging table connection.            *
  ****************************************************************
  * 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:

  UI41736

Modules/Macros

• CQMBLOB  CQMCAEPT CQMCPXPT CQMJAR
  

Fix information

• Fixed component name

  DB2 QUERY MONIT

• Fixed component ID

  5655E6701

Applicable component levels

• R320 PSY UI41736

     UP16/10/20 P F610

Fix is available

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