PH69691: AUTOMATIC BINARY OPTIMIZER (ABO) FOR Z/OS 2.3 TRIAL - JANUARY 2026 ENHANCEMENTS AND FIXES

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Automatic Binary Optimizer (ABO) for z/OS 2.3 Trial - January
  2026 enhancements and fixes
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of IBM Automatic Binary Optimizer      *
  *                 (ABO) for z/OS 2.3, and ABO for z/OS 2.3     *
  *                 Trial                                        *
  ****************************************************************
  * PROBLEM DESCRIPTION: This APAR adds the following new        *
  *                      functions from the ABO 2.3 PTF:         *
  *                                                              *
  *                      1) In some cases, the Automatic Binary  *
  *                      Optimizer may fail with the message     *
  *                      "Assertion failed at ./Binder.cpp:4422: *
  *                      location < _length" when optimizing     *
  *                      modules containing code sections with a *
  *                      length of 0.                            *
  *                                                              *
  *                      2) MOVE statements written in a way to  *
  *                      move SPACES to a PIC 9(9)V9(7) USAGE    *
  *                      DISPLAY data item, will cause these     *
  *                      items to contain invalid data. An       *
  *                      instruction generated at ARCH(14) or    *
  *                      above when NUMPROC(PFD) is specified,   *
  *                      abends when using this invalid data.    *
  ****************************************************************
  * RECOMMENDATION: Apply the IBM-provided PTF                   *
  ****************************************************************
  The ABO 2.3 Trial was modified to include all of the above items
  from the January 2026 ABO 2.3 PTF.
  

Problem conclusion

• The ABO 2.3 Trial was modified to include all of the above items
  from the January 2026 ABO 2.3 PTF.
  

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:

  UO06489 UO06490

Modules/Macros

• BOZACCEP BOZALLOC BOZAPPLY BOZAUPLE BOZBXITA BOZCIAPJ BOZCICPJ
  BOZCICPR BOZCICSJ BOZCICSR BOZDDDEF BOZEQCWI BOZEXE1  BOZGLUE
  BOZJCLE  BOZJIVP  BOZMCTPA BOZMSGE  BOZMSGK  BOZMSGT  BOZOBJ1
  BOZOBJ2  BOZOPT   BOZPA    BOZPAJ   BOZRECV  BOZRECV1 BOZRIDT
  BOZSETRT BOZSMF   BOZSMFJ  BOZSMFR  BOZSMPE  BOZSRC1  BOZSRC2
  BOZTRUE
  

Fix information

• Fixed component name

  AUTO BIN OPT TR

• Fixed component ID

  5697TR200

Applicable component levels

• R230 PSY UO06489

     UP26/01/30 P F601

• R23J PSY UO06490

     UP26/01/30 P F601

Fix is available

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