PM80455: ABENDS102 OR ABENDS402 OCCURRED IN THE IIUNDXRC TASK FOR LOADING INDEXES.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABENDS102 or ABENDS402 occurred in the IIUNDXRC task for loading
  indexes.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IMS Index Builder for z/OS,     *
  *                 Version 3 Release 1 (FMID=H22O310)           *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABENDS102 or ABENDS402 occurred in the  *
  *                      IIUNDXRC task for loading indexes,      *
  *                      due to an incorrect ECB for POST macro. *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When two or more index loader (IIUNDXRC) tasks are running in
  parallel and requests to release an used data buffer are sent
  at the same time, the WAITQ queue of the buffer releaser
  (IIUTBREL) task might be corrupted. The corruption causes
  ABENDS102.
  
  Internally, BPQE elements containing an ECB address are chained
  in the WAITQ queue. To avoid such a corruption, a used BPQE
  element is restored as the last element of the queue, not as
  the top element.
  The following WAITQ queues are affected by this change:
  - Queue for input of the common service tasks including
    IIUTBREL
  - Queue for input of stripe merge, sort and DRF process of
    each index.
  

Problem conclusion

• When two or more index loader (IIUNDXRC) tasks are running in
  parallel and requests to release a used data buffer are sent
  at the same time, the WAITQ queue of the buffer releaser
  (IIUTBREL) task might be corrupted. The corruption causes
  ABENDS102.
  
  Internally, BPQE elements containing an ECB address are chained
  in the WAITQ queue. To avoid such a corruption, a used BPQE
  element is restored as the last element of the queue, not as
  the top element.
  The following WAITQ queues are affected by this change:
  - Queue for input of the common service tasks including
    IIUTBREL
  - Queue for input of stripe merge, sort and DRF process of
    each index.
  

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:

  UK91590

Modules/Macros

• IIUBDBD  IIUBDE00 IIUBDE10 IIUBDE20 IIUBEN00
  IIUBEN10 IIUBEN20 IIUBEN30 IIUBE150 IIUBE350 IIUBE351 IIUBE352
  IIUBE353 IIUBIBCD IIUBINIT IIUBLERR IIUBPR91 IIUBSCTL IIUBSRTB
  IIUBSTMS IIUBTO10 IIUCMPSR IIUCMRGR IIUDASTE IIUDBREL IIUDCSAS
  IIUDINTL IIUDMREL IIUDMRGR IIUDPLNR IIUDRFPI IIUDRVRX IIUDSRTD
  IIUDTREL IIUDYN00 IIUIFS2A IIUIFS2B IIUIFS22 IIUIFS23 IIUIFS29
  IIUIFS3A IIUIFS3B IIUIFS32 IIUIFS33 IIUIFS39 IIULSTNR IIUMMSGR
  IIUNCD01 IIUNCD05 IIUNCD11 IIUNCD12 IIUNCD15 IIUNCR01 IIUNCR05
  IIUNCR11 IIUNCR12 IIUNCR15 IIUNDXRC IIUNTLZR IIUPDBRC IIUPLS00
  IIUPMGPY IIUQE15  IIUQE35D IIUQE35R IIUQE35V IIURE15  IIURE35D
  IIURE35P IIURE35R IIURE35V IIURE35X IIUSBREL IIUSCA01 IIUSCA05
  IIUSCA11 IIUSCA12 IIUSCA21 IIUSCA22 IIUSCA23 IIUSCA25 IIUSCA31
  IIUSCA55 IIUSCB01 IIUSCB11 IIUSCB12 IIUSCB31 IIUSE15  IIUSE35
  IIUSE35D IIUSE35P IIUSIBCD IIUSIN00 IIUSIN01 IIUSIN05 IIUSIN10
  IIUSIN11 IIUSIN12 IIUSIN20 IIUSIN22 IIUSRCMP IIUSRPRC IIUSRSCH
  IIUSRTSV IIUSTART IIUTMRXT
  

Fix information

• Fixed component name

  IMS INDEX BUILD

• Fixed component ID

  5655E2400

Applicable component levels

• R310 PSY UK91590

     UP13/02/14 P F302

Fix is available

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