PH68598: INCREASE IN CPU WHEN MODULE CDEVTYPE IN IGZXLPKA ISSUES MANY SVC X'18'

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• System trace indicates that the DEVTYPE svc's are issued out of
  module CDEVTYPE in IGZXLPKA. Return code and reason code for the
  svc's are '04', indicating that a ddname cannot be found.
  

Local fix

• Remove ptf for apar PH65875
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL 5 and later        *
  *                 releases running transactions under CICS     *
  ****************************************************************
  * PROBLEM DESCRIPTION: The performance of CICS                 *
  *                      transactions are degraded. Performance  *
  *                      monitoring tools or System Trace        *
  *                      indicate that multiple DEVTYPE          *
  *                      (SVC 24, 0x18) calls are being issued   *
  *                      from IGZXLPKA, COBOL Runtime module.    *
  ****************************************************************
  * RECOMMENDATION: Install the provided PTF.                    *
  ****************************************************************
  APAR PH65875 in the April 2025 COBOL Runtime PTF introduced
  a new feature in which the COBOL Runtime module IGZXLPKA makes
  a call to DEVTYPE (SVC 24, 0x18) to request information
  relating to a IGZOPTS DD. The new logic works as designed,
  but the resulting performance overhead is not as efficient as
  it could have been.
  
  For more information, see:
  PH65875: NEW FUNCTION: RUNTIME OPTION TO SUPPRESS DUPLICATED
  COBOL RUNTIME MESSAGES.
  V2R5: UO02859, V3R1: UO02864
  https://www.ibm.com/support/pages/apar/PH67050
  
  COB0501T/K COB0502T/K COB0601T/K COB0602T/K COB0603T/K
  COB0604T/K COB0605T/K
  

Problem conclusion

• The COBOL Runtime has been enhanced to reduce the performance
  overhead in IGZXLPKA.
  

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:

Modules/Macros

• IGZAP03A IGZAP08A IGZAP08B IGZAP08C IGZAP08D IGZAP11A IGZAP12A
  IGZCER4  IGZCEV4  IGZCJNI2 IGZLLIBV IGZXAPI  IGZXCA31 IGZXCDA
  IGZXD24  IGZXDMR  IGZXJNI2 IGZXLPIO IGZXLPKA IGZXLPKB IGZXLPKC
  IGZXLPKD IGZXLPKE IGZXLPKF IGZXLPKG IGZXPK2
  

Fix information

• Fixed component name

  LE ENT COBOL LI

• Fixed component ID

  568819812

Applicable component levels

• R7D0 PSY UO05963

     UP25/12/03 P F512

• R7E0 PSY UO05966

     UP25/12/03 P F512

• R7F0 PSY UO05967

     UP25/12/03 P F512

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.