PK72341: RUNNING HPFPU POINTER CHECKER ( FABADA1 ) WITH IMS V10 RESULTS IN A HANG OUT OF FABAARCX

APAR status

• Closed as program error.

Error description

• Running High Performance Fast Path Utilities Pointer Checker
  FABADA1 with IMS 10.1 results in a wait from FABAARCX near
  offset x'76e' (at PK64704)'.  The hang is a result of an
  unexpected return code from DBRC.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All DEDB Pointer Checker and Unload users    *
  *                 of High Performance Fast Path Utilities      *
  *                 FP Basic Tools Version 3 Release 2           *
  *                 (FMID: H31A320).                             *
  ****************************************************************
  * PROBLEM DESCRIPTION: Pointer Checker (FABADA1) with IMS V10  *
  *                      environment resulted in a wait from     *
  *                      FABAARCX.                               *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  Pointer Checker (FABADA1) with IMS V10 environment resulted
  in a wait from FABAARCX near offset x'76e' (at PK64704)'.
  

Problem conclusion

• In IMS V10 environment, Pointer Checker (FABADA1) requests
  of DBRC API to "OPEN", "QUERY", and "CLOSE" against DBRC.
  This trouble was related to the sub task handling a final
  "QUERY" request and waiting for a while after the POST for the
  main task because there was no dispatching.
  The main task issued a subsequent "CLOSE" request for the
  sub task. Then the sub task resumed the process and rechecked
  the parameter from the main task.
  In this case, because the parameter from the main task was
  changed from "QUERY" to "CLOSE", the sub task terminated
  through the sub task handled "QUERY" request.
  Therefore the main task waited for the POST for the "CLOSE"
  request from the sub task, causing a potential hang.
  
  The macro FABUARCA has been modified to copy the function code
  requested from the main task into the sub task's local area, and
  check the copied function code to handle whether the sub task
  can end the process or not.
  320Y
  FABAARCA
  FABCARCA
  FABUARCA
  

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:

  UK40482 PK73502

Modules/Macros

•    FABAARCA FABCARCA FABUARCA
  

Fix information

• Fixed component name

  IMS HP FP UTILI

• Fixed component ID

  5655K9400

Applicable component levels

• R320 PSY UK40482

     UP08/10/07 P F810