PH30127: AN UPDATE TO THE AUTOMATIC BINARY OPTIMIZER FOR Z/OS V2.1 TRIAL TO INCLUDE THE CONTENTS OF THE 4Q2020 PTF

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• AN UPDATE TO THE AUTOMATIC BINARY OPTIMIZER FOR Z/OS V2.1 TRIAL
  TO INCLUDE THE CONTENTS OF THE 4Q2020 PTF.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of IBM Automatic Binary Optimizer      *
  *                 (ABO) for z/OS, 2.1                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: This APAR addresses the following       *
  *                      issues or adds new function from the    *
  *                      ABO 2.1 PTF:                            *
  *                      1) A new tool, called the ABO           *
  *                      Performance Advisor, is introduced to   *
  *                      automate all the individual steps       *
  *                      required to efficiently optimize a      *
  *                      COBOL batch application using ABO and   *
  *                      to report on the CPU time savings from  *
  *                      using ABO. The original JCL used to     *
  *                      run the COBOL batch application is      *
  *                      provided as an input to the tool,       *
  *                      which automatically does the            *
  *                      following:                              *
  *                                                              *
  *                      - rebinds the original program to       *
  *                      enable an RTI Profile to be collected   *
  *                                                              *
  *                      - runs the rebound original program to  *
  *                      report the CPU time taken by the        *
  *                      program and to collect the RTI profile  *
  *                      - optimizes the top CPU consuming       *
  *                      COBOL CSECTs as found in the RTI        *
  *                      profile with ABO                        *
  *                      - runs the ABO optimized program        *
  *                      - reports on the CPU time of the        *
  *                      optimized program, proportion of time   *
  *                      spent in COBOL, and the % CPU           *
  *                      reduction from using ABO                *
  *                                                              *
  *                      2)  For some large modules, ABO may     *
  *                      consume high amounts of CPU time and    *
  *                      memory. This APAR improves ABO to       *
  *                      reduce CPU time consumption.            *
  *                                                              *
  *                      3) The ABO optimizer directive BOPT     *
  *                      and the optimizer option CSECT both     *
  *                      support regular expressions to allow    *
  *                      filtering of the members or CSECTs      *
  *                      that should or should not be            *
  *                      optimized.                              *
  *                                                              *
  *                      Some of the current syntax for the      *
  *                      regular expressions in the ABO          *
  *                      optimizer directive BOPT and the        *
  *                      optimizer option CSECT is dependent on  *
  *                      the specific encoding of the EBCDIC     *
  *                      code page and is therefore not usable   *
  *                      across many code pages.  ABO was        *
  *                      improved to add new syntax in BOPT      *
  *                      member and CSECT option regular         *
  *                      expressions that is more stable across  *
  *                      EBCDIC code pages.                      *
  *                      - CSECT and member names can now be     *
  *                      separated using ':' in addition to the  *
  *                      current syntax of '|'                   *
  *                      - CSECT and member names can now be     *
  *                      negated using '" in addition to the     *
  *                      current syntax of '!'                   *
  *                                                              *
  *                      4) ABO was changed to improve runtime   *
  *                      performances of optimized modules.      *
  *                      This affects modules compiled from      *
  *                      COBOL source containing some forms of   *
  *                      INSPECT TALLYING CHARACTERS BEFORE      *
  *                      statements.                             *
  *                                                              *
  *                      5) Fixed a problem where ABO may abend  *
  *                      with message "Assertion failed at       *
  *                      ../il/Node.cpp:11033:" when optimizing  *
  *                      modules compiled from source            *
  *                      containing comparison statements on     *
  *                      data items that are both of zero        *
  *                      length.                                 *
  ****************************************************************
  * RECOMMENDATION: Apply provided service                       *
  ****************************************************************
  The ABO 2.1 Trial was modified to include all of the above items
  from the Oct 2020 ABO 2.1 PTF.
  

Problem conclusion

• The ABO 2.1 Trial now includes these improvements from the Oct
  2020 ABO 2.1 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:

  UI72110 UI72111

Modules/Macros

• BOZBXITA BOZEXE1  BOZJIVP  BOZMSGE  BOZMSGK  BOZMSGT  BOZOBJ1
  BOZOPT   BOZRIDT  BOZSRC1
  

Fix information

• Fixed component name

  AUTO BIN OPT TR

• Fixed component ID

  5697TR200

Applicable component levels

• R210 PSY UI72110

     UP20/10/24 P F010

• R21J PSY UI72111

     UP20/10/24 P F010

Fix is available

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