IBM Support

PK83125: ABEND 0C4 OCCURS IN DFHLDLD1 ON CLC INSTRUCTION

A fix is available

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • An abend 0C4 / AKEX abend occurs in DFHLDLD1 at offset x'4C6C'
    on a CLC instruction:   D507 7002 561C.  The running transaction
    is the COVG task.  Reg7 is loaded from Reg4 (the LDLD1 stack)
    +2B0 with a bad address.  We are attempting to load EYU0VKES
    (which is at UK43489).
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND 0C4/AKEX in DFHLDLD1 at offset    *
    *                      X'4C6C'                                 *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    DFHLDLD1 is in the process of scanning a CICSPlex SM load
    module in order to create the CSECTL control blocks that map
    the CSECT name, address, version and PTF level for dump
    formatting. The CICSPlex SM load module has a >MODHEAD
    identifier followed by a byte of C'E', which CICS incorrectly
    interprets. It then uses what it thinks is the module size to
    change the bounds of the scan loop, resulting in an invalid
    storage address and hence the S0C4 abend.
    
    Depending on prevailing conditions, the error does not always
    result in an S0C4 abend, but will typically produce erroneous
    output. An example for LD=1:
    
    PGM NAME ENTRY PT  CSECT   LOAD PT. REL. PTF LVL.
    EYU9VKEC 960E9568 DFHYA650 15E00000 650
                      DA02/23/ 15E0002A 0VH .Y.000  [email protected] UK44
    
    After the fix is applied this will show:
    
    PGM NAME ENTRY PT  CSECT   LOAD PT. REL. PTF LVL.
    EYU9VKEC 960E9568 DFHYA650 15E00000 650
    
    Additional keywords: msgDFHLD0001 0C4 ABEND AKEX LD=2 LD=3
    LD=ALL
    

Problem conclusion

  • DFHLDLD1 and DFHLDDMI have been changed to correctly build the
    CSECTL control blocks.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PK83125

  • Reported component name

    CICSTS V3 Z/OS

  • Reported component ID

    5655M1500

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-03-23

  • Closed date

    2009-05-06

  • Last modified date

    2009-06-01

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

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

    UK46354

Modules/Macros

  •    DFHLDCOM DFHLDDMI DFHLDLD1
    

Fix information

  • Fixed component name

    CICSTS V3 Z/OS

  • Fixed component ID

    5655M1500

Applicable component levels

  • R500 PSY UK46354

       UP09/05/09 P F905

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.

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"3.2","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"3.2","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
01 June 2009