PM97681: WAIT WORKSTATION MISSED WAIT TIME

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• IN TIME OF HIGH WORKLOAD, WAIT WORKSTATIONS MISSED THEIR
  WAIT TIME. AN OVERRUM MAY OCCUR AND DELAYS SUCCESSOR
  OPERATIONS.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: ALL TWS for z/OS 8.5.1, 8.6 and 9.1.0 users, *
  *                 FUNCTION=WA.                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: When there is high workload, wait       *
  *                      work stations missed their wait         *
  *                      time.                                   *
  ****************************************************************
  * RECOMMENDATION: APPLY THE PTF FIXING THIS APAR               *
  ****************************************************************
  When there is an high workload, wait work stations missed
  their wait time. This causes delays in the submission of
  the successor operations.
  

Problem conclusion

• The new parameter MAXSUBJOBS is added in OPCOPTS.
  Its default value is zero.
  If the parameter is specified and its value is different
  from zero, then the TWSz stops the submission when the
  number of jobs submitted consecutively reaches the value
  specified by the parameter and scans the tie chain to process
  time dependent events.
  THE FOLLOWING TWS FOR Z/OS PUBLICATION WILL BE UPDATED:
                           - - -
  +-------------------------------------------------------------+
  |TITLE:            Workload Scheduler for z/OS                |
  |                    Managing the Workload                    |
  |                       Version 8.5.1             SC32-1263-05|
  |                       Version 8.6               SC32-1263-06|
  |                       Version 9.1               SC32-1263-07|
  |-------------------------------------------------------------|
  |Appendix D. Supported z/OS Commands                          |
  |Section: Modifying the scheduler                             |
  |                                                             |
  |The new option MAXSUB=nnnn must be added to the list with    |
  |the following explanation:                                   |
  |MAXSUB=nnnn                                                  |
  |Sets the new value of the MAXSUBJOBS keyword of the OPCOPTS  |
  |statement. Allowed values are 0 to 9999.                     |
  +-------------------------------------------------------------+
  +-------------------------------------------------------------+
  |TITLE:            Workload Scheduler for z/OS                |
  |                   Customization and Tuning                  |
  |                        Version 8.5.1            SC32-1265-05|
  |                        Version 8.6              SC32-1265-06|
  |                        Version 9.1              SC32-1265-08|
  |-------------------------------------------------------------|
  |Chapter 1. Defining initialization statements                |
  |Section    OPCOPTS                                           |
  |                                                             |
  |The new parameter MAXSUBJOBS has to be added to the OPCOPTS  |
  |statement.                                                   |
  |The description of MAXSUBJOBS is the following:              |
  |Defines what is the maximum number of jobs that the TWSz can |
  |submit consecutively without verifying                       |
  |the processes related to dependent events                    |
  |(e.g. wait work station delay, critical path, long duration  |
  | alert).                                                     |
  |The default value is 0. The maximum value is 9999.           |
  |value is 9999.                                               |
  |0 means that the TWSz does not interrupt the submission to   |
  |process time dependent events.                               |
  |You can modify this value with an operator command:          |
  |/F procname,MAXSUB=nnnn                                      |
  |where procname is the TWSz JCL procedure name and nnnn the   |
  |new parameter value.                                         |
  +-------------------------------------------------------------+
  510Y
  512Y
  600Y
  602Y
  910Y
  912Y
  EQQWAAIN
  EQQZCMDP
  EQQZCMDX
  EQQZOPTX
  

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:

  UI13561 UI13562 UI13563 UI13564 UI13565 UI13566

Modules/Macros

• EQQWAAIN EQQZCMDP EQQZCMDX EQQZOPTX
  

Fix information

• Fixed component name

  TIV WRKLD SCHD

• Fixed component ID

  5697WSZ01

Applicable component levels

• R510 PSY UI13561

     UP14/01/20 P F401

• R512 PSY UI13564

     UP14/01/20 P F401

• R600 PSY UI13562

     UP14/01/20 P F401

• R602 PSY UI13565

     UP14/01/20 P F401

• R910 PSY UI13563

     UP14/01/20 P F401

• R912 PSY UI13566

     UP14/01/20 P F401

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.