PH69904: Z CODE OPTIMIZATION ADVICE - 2.8.20 Z/OS HOST COMPONENT RELEASE

Obtain the fix for this APAR.

APAR status

• Closed as unreproducible in next release.

Error description

• Z CODE OPTIMIZATION ADVICE - 2.8.20 Z/OS HOST COMPONENT RELEASE
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of Z Code Optimization Advice,     *
  *                 and users of Z Code Optimization Advice      *
  *                 compiling programs with nested IF... ELSE    *
  *                 statements that check the same data item     *
  *                 for different values. Users of Z Code        *
  *                 Optimization Advice who upgrade to the IBM   *
  *                 watsonx Code Assistant for Z 2.8.20 release  *
  *                 should upgrade the z/OS host component to    *
  *                 obtain new function support.                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: New Function:                           *
  *                      1. Z Code Optimization Advice now       *
  *                      recommends IF and ELSE clauses be       *
  *                      reordered if they check the same data   *
  *                      item for different values so that       *
  *                      frequently-executed IF clauses are      *
  *                      evaluated first, increasing the         *
  *                      overall performance of the nested IF    *
  *                      ... ELSE structure.                     *
  ****************************************************************
  * RECOMMENDATION: Apply the IBM-provided PTF.                  *
  ****************************************************************
  1. Z Code Optimization Advice now recommends IF and ELSE
  clauses be reordered if they check the same data item for
  different values so that frequently-executed IF clauses are
  evaluated first, increasing the overall performance of the
  nested IF ... ELSE structure.
  

Problem conclusion

Temporary fix

Comments

• Z Code Optimization Advice was updated as follows:
  1. Z Code Optimization Advice now recommends IF and ELSE
  clauses be reordered if they check the same data item for
  different values so that frequently-executed IF clauses are
  evaluated first, increasing the overall performance of the
  nested IF ... ELSE structure.
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UO06644

Modules/Macros

• CQIALC   CQIBE    CQIBXITA CQICONFG CQIINI1  CQIINI2  CQIINI3
  CQIINIJ1 CQIINIJ2 CQIINIJ3 CQIINIT  CQIINITJ CQIIVPE  CQIIVPJ
  CQIIVPS1 CQIIVPS2 CQIMSGE  CQIMSGK  CQIMSGT  CQIRIDT
  

Fix information

• Fixed component name

  CODE OPT ADVICE

• Fixed component ID

  5900B4M04

Applicable component levels

• R210 PSY UO06644

     UP26/02/24 P F602

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.