PH59727: Improve the performance of USAGE(REGEX(RESET)) by preloading locale modules for supported codepages

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When changing locales for support of codepage changes, the
  "from" locale module is deleted and the "to" locale module
  loaded. This can create considerable overhead if REGEX(RESET) is
  in effect and the regex builtin function is frequently used with
  a codepage parameter that differs from the default codepage
  specified by the CODEPAGE compiler option.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Enterprise PL/I for z/OS 6.1 users of        *
  *                 REGEX built-in function                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: There is a performance hit when the     *
  *                      following conditions occur:             *
  *                      - REGEX(RESET) is in effect             *
  *                      - REGEX built-in is used repeatedly     *
  *                      - Codepage parameter used with the      *
  *                         REGEX built-in differs from the      *
  *                         default codepage used by the program *
  ****************************************************************
  * RECOMMENDATION: Apply the PTF for this APAR                  *
  ****************************************************************
  Performance is slow when a program used the REGEX built-in
  function repeatedly, e.g. in a big loop, and the codepage
  parameter used with the REGEX built-in differs from the default
  codepage used by the program.
  

Problem conclusion

• The Enterprise PL/I for z/OS run-time library has been modified
  to improve run-time performance when the REGEX built-in function
  is used in the above scenario.
  

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:

  UI95665 UI95673

Modules/Macros

• IBMPEV11
  

Fix information

• Fixed component name

  LE VA PL/I

• Fixed component ID

  568819806

Applicable component levels

• R7D0 PSY UI95665

     UP24/02/14 P F402

• R7E0 PSY UI95673

     UP24/02/15 P F402

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.