OA47368: ABENDDC2 RSN0038 IN MODULE HSIZ0203 USAGE MONITOR WRITER SORT EXIT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• UMON writer program HSIZ0203 has E15 and E35 SORT exits which
  may erroneously return control to SORT in supervisor state. This
  causes a problem when SORT issues IARV64 macros with a usertoken
  because the token value will not pass validity checking for
  supervisor state.
  

Local fix

• Allocate a DFSPARM file to a data set or member and supply a
  SORT option override of OPTION MOSIZE=0 to instruct DFSORT to
  not use memory objects.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All IBM Tivoli Asset Discovery for z/OS V8.1 *
  *                 customers.                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABENDDC2 RSN0038 causes the SORT of     *
  *                      Usage Monitor data to fail.             *
  *                                                              *
  *                      Redundant WTO messages are issued when  *
  *                      a switch is queued behind an active     *
  *                      writer task.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When DFSORT is invoked by the Usage Monitor writer task and it
  attempts to use memory object space as a sort work area, it can
  abend with code SDC2 reason 0038. This happens because the user
  token used for IARV64 requests is invalid for supervisor state.
  A Usage Monitor SORT exit incorrectly returned control to SORT
  in supervisor state which is not expected by DFSORT.
  
  When the collection repository fills up while a writer task is
  already running, it is possible for thousands of HSIZ019I,
  HSIZ039I and HSIZ040I WTO message cycles to occur at machine
  speed. These messages are redundant, and may flood WTO buffers.
  

Problem conclusion

• HSIZ0203 E15/E35 SORT exit code is changed to ensure that
  problem state is in effect whenever control is returned to SORT.
  
  HSIZMON code is changed to only wait on the writer task and
  command ECBs while a writer task is active with a queued switch.
  

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:

  UA76788

Modules/Macros

•    HSIZMON  HSIZ0203
  

Fix information

• Fixed component name

  TIV ASSET DISC

• Fixed component ID

  5698B39TD

Applicable component levels

• R810 PSY UA76788

     UP15/04/08 P F504

Fix is available

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