PH26528: PARAMETER DEFAULT_DEVICES_NUMBER OF TAPEUNIT IGNORED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• (HPU 5.1 only) The default_devices_number operand defined either
  by the TAPEUNIT option or the VZM010/TAPEUNIT parmlib parameter
  is unduly not taken into account. The value of 1 is used
  instead.
  As a consequence, as the value of default_devices_number is used
  as a default value for the UNCNT, the output parallelism (i.e.
  when writing the unloaded data) is disabled and all the output
  data sets are unduly stacked on the the same tape instead of
  being dispatched to several tapes when the following conditions
  apply:
  - the allocation of the data set for the unloaded data
  (specified through the OUTDDN or UNLDDN options) is requested
  through a TEMPLATE statement
  - the TEMPLATE statement used for the output data set specifies:
    - a UNIT described by either a TAPEUNIT option or the
  VZM010/TAPEUNIT parmlib parameter
    - no UNCNT suboption
    - the TAPEUNIT specification applicable to the unit specified
  in the TEMPLATE statement defines a default_devices_numbe
  greater than 1
    - the STACK YES suboption
  

Local fix

• Set the template parameter UNCNT to the same value as those
  specified in the default_device_number of TAPEUNIT option.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Db2 High Performance Unload         *
  *                 for z/OS                                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: The default_devices_number operand      *
  *                      defined either by the TAPEUNIT option   *
  *                      or the VZM010/TAPEUNIT parmlib          *
  *                      parameter is unduly not taken into      *
  *                      account. The value of 1 is used         *
  *                      instead.                                *
  *                                                              *
  *                      As a consequence, as the value of       *
  *                      default_devices_number is used as a     *
  *                      default value for the UNCNT, the output *
  *                      parallelism (i.e. when writing the      *
  *                      unloaded data) is disabled and all the  *
  *                      output data sets are unduly stacked on  *
  *                      the same tape instead of being          *
  *                      dispatched to several tapes when the    *
  *                      following conditions apply:             *
  *                                                              *
  *                      - the allocation of the data set for    *
  *                      the unloaded data (specified through    *
  *                      the OUTDDN or UNLDDN options) is        *
  *                      requested through a TEMPLATE statement  *
  *                      - the TEMPLATE statement used for the   *
  *                      output data set specifies:              *
  *                       - a UNIT described by either a         *
  *                         TAPEUNIT option or the               *
  *                         VZM010/TAPEUNIT parmlib parameter    *
  *                       - no UNCNT suboption                   *
  *                       - the TAPEUNIT specification           *
  *                         applicable to the unit specified in  *
  *                         the TEMPLATE statement defines a     *
  *                         default_device_number greater than 1 *
  *                       - the STACK YES suboption              *
  ****************************************************************
  * RECOMMENDATION: Apply the PTF                                *
  ****************************************************************
  Parameter default_devices_number of TAPEUNIT ignored
  

Problem conclusion

• Code has been changed to fix this problem
  

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:

Modules/Macros

• INZUTILK
  

Fix information

• Fixed component name

  DB2 HI PERF UNL

• Fixed component ID

  5697F4400

Applicable component levels

• R510 PSY UI71018

     UP20/08/18 P F008

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.