PM66914: CORRUPTED SMF110 RECORDS DUE TO TRANSACTION MONITOR AREA OVERLAYED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Sometimes, the SMF110 record contains wrong value on fields
  related to ODR origin destination ( Ostart , Ouserid , Otran and
  so on). The problem is the ORIGIN data taken from the TMA .
  This happens when a  X'93' value in found in the
  3rd byte after the end of the data in the TIOA.
  This X'93' is the value in field FMHCARGN for an FMH which
  signifies the presence of an ODR.
  The problem is that the code is looking beyond the end of the
  request in the TIOA and and encounters random characters .
  The code should not be past the data encompassed by the TIOATDL
  (the terminal data lenght field ).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: Bad data in CICS monitoring records for *
  *                      CRSR transaction.                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Bad data appears intermittently in CICS performance monitoring
  records for the CRSR transaction. The bad fields are origin data
  record fields. These fields should contain information about the
  original task which spawned the new task. CRSR is an internal
  CICS transaction and has no origin data so the monitoring fields
  for origin data should be empty.
  DFHZATT processes the request to run the CRSR transaction.
  It parses the request in the TIOA owned by the MRO session.
  Code in DFHZATT steps over an FMH43 and starts looking for
  a X'93' value in field FMHCARGN which signifies the presence
  of origin data in the TIOA. However, the code fails to
  test if it has reached the end of the request before checking
  for a X'93' value.
  It encounters a X'93' which is part of residual data from a
  previous request processed using the same TIOA.
  DFHZATT references this residual data as ORIGIN_DATA when it
  issues the DFHXMAT ATTACH for transaction CRSR.
  

Problem conclusion

• DFHZATT has been changed to ensure it has not run past the end
  of the request in the TIOA before checking for the presence of
  the origin data record id, x'93' , in field FMHCARGN.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  UK79947

Modules/Macros

•    DFHZATT
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R700 PSY UK79947

     UP12/07/11 P F207

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.