PH47785: ABEND0C4 IN IWXPGEN0 WHEN UPDATING FROM THE BASE LEVEL TO THE LATEST LEVEL AT ONCE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• IWXPGEN0 is assigned the RENT attribute when IMS Workload Router
  is updated from the base level to the latest PTF level at once.
  If IWXPGEN0 is loaded into write protected memory subpool 252,
  this causes ABEND0C4 in IWXPGEN0 +x'46' as program IWXPGEN0 is
  marked as Reentrant/Reusable.
  IWXPGEN0 is not assigned the RENT attribute when WLR is updated
  cumulatively for each PTF level, so the abend does not occur
  in that case.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All IBM IMS Workload Router for z/OS Version *
  *                 2 Release 7 (FMID=H23J270) users.            *
  ****************************************************************
  * PROBLEM DESCRIPTION: If IWXPGEN0 is loaded into write        *
  *                      protected memory subpool 252, this      *
  *                      causes ABEND0C4 in IWXPGEN0 +x'46' as   *
  *                      program IWXPGEN0 is marked as           *
  *                      Reentrant/Reusable.                     *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  IWXPGEN0 is assigned the RENT attribute when IMS Workload Router
  is updated from the base level to the latest PTF level at once.
  If IWXPGEN0 is loaded into write protected memory subpool 252,
  this causes ABEND0C4 in IWXPGEN0 +x'46' as program IWXPGEN0 is
  marked as Reentrant/Reusable.
  IWXPGEN0 is not assigned the RENT attribute when WLR is updated
  cumulatively for each PTF level, so the abend does not occur in
  that case.
  The latest JCLIN provided by WLR lacks the STEP for IWXPGEN0.
  Therefore, IWXPGEN0 in the library, which is updated to the
  latest level at once, is assigned the RENT attribute and causes
  0C4.
  As a similar problem, IWXNOQUE transaction may occur ABEND0C4
  in IWXNOQUE +x'36' as program IWXNOQUE is marked as Reentrant.
  

Problem conclusion

• This APAR has provided JCLIN including link-edit step for all
  programs. This removes the RENT/REUS attribute on IWXPGEN0.
  It also removes the RENT attribute from IWXNOQUE.
  IMS Workload Router has been added the IWXLINK sample JCL.
  This JCL is for managing the level of JCLIN and usually does not
  need to be run by the user.
  

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:

  UI81637

Modules/Macros

• IWXCKSCN IWXGPARM IWXLINK  IWXNOQUE
  

Fix information

• Fixed component name

  IMS WLR

• Fixed component ID

  5697B8700

Applicable component levels

• R270 PSY UI81637

     UP22/07/27 P F207

Fix is available

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