OA66035: SMF99 SUBTYPE 2 RECORD FIELD SMF99DLN LENGTH IS GREATER THAN X'7FF8' 32760 BYTES

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• SMF99 Subtype 2 record field SMF99DLN length is greater than
  x'7FF8' 32760 bytes
  
  A service class with many swapped in jobs can potentially take
  more than the SMF record maximum 32760 bytes for a complete
  record
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users of z/OS 2.4 (HBB77C0) and                          *
  * z/OS 2.5 (HBB77D0).                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * SMF99 subtype 2 record field SMF99DLN                        *
  * length is greater than x'7FF8' 32760                         *
  * bytes.                                                       *
  * A service class with many swapped in                         *
  * jobs can potentially take more than                          *
  * the SMF record maximum 32760 bytes                           *
  * for a complete record.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Module IRAPASS2 already limits the number of address space
  sections per service class period data section to 100 in an SMF
  99 subtype 2 record. However, the assumption that this ensures
  an SMF record maximum of 32760 bytes could be wrong with multi-
  period service classes, more than 100 address spaces being
  swapped in, or many server data sections.
  

Problem conclusion

• IRAPASS2 has been updated to ensure that the maximum record
  length for SMF 99 subtype 2 records is not exceeded. For each
  service class period data section, it is ensured that appended
  sub-sections (like address space, server data entry, or queue
  server data entry sections) still fit in the record and the
  maximum record length of 32K is not exceeded. If the maximum
  record length is reached, IRAPASS2 stops writing further sub-
  setions to the record and sets bit 0 of field SMP99FLG in the
  SMF 99 product section. This bit indicates that only a subset
  of the available data was written to avoid that this record
  gets larger than 32 KByte.
  

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:

  UJ94992 UJ94993

Modules/Macros

• IRAPASS2 IRASTFXS
  

Fix information

• Fixed component name

  WORK LOAD MANAG

• Fixed component ID

  5752SCWLM

Applicable component levels

• R7C0 PSY UJ94992

     UP24/04/17 P F404

• R7D0 PSY UJ94993

     UP24/04/17 P F404

Fix is available

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