PI18037: EVENT PROCESSING EVENT CAPTURE (CEPD) STORAGE VIOLATION AND AN ABEND IN DFHEPAS

Obtain the fix for this APAR.

APAR status

• Closed as unreproducible.

Error description

• The customer has inadvertently turns on Event Capture which has
  driven CEPD resulting in this overlay. DFHEPAS abends in
  PAD_DATA routine attempting to pad a buffer with a special
  character X'5C' , C'*'. The dump shows a massive (2Mb) overlay
  of character '*'.
  

Local fix

• stop event capture
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 0C4 in DFHEPAS caused by storage  *
  *                      overlay.                                *
  ****************************************************************
  * RECOMMENDATION:                                            . *
  ****************************************************************
  A codepath exists within DFHEPAS where routine format_data is
  driven to pad a data area with asterisks (indicating that data
  from EVENTS is UNAVAILABLE). However, the default length of the
  area to pad is 256 bytes long.  It is possible the pad length
  can exceed this. When it does, the asterisk padding exceeds the
  256 byte default length and can corrupt adjacent CICS control
  blocks.  Usually this manifests as an 0C4 in DFHEPAS but it is
  possible the 0C4 may be reported in other CICS modules.
  
  Keywords: abendS0C4 S0C4 CEPD
  

Problem conclusion

Temporary fix

•             *********
              * HIPER *
              *********
  FIX AVAILABLE BY PTF ONLY
  

Comments

• DFHEPAS has been modified to increase the pad buffer length when
  it exceeds 256 bytes to the required length.
  

APAR Information

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

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

  UI18552

Modules/Macros

• DFHEPAS
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R600 PSY UI18552

     UP14/06/13 P F406 ½

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.