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PI54404: DFHAP1300 JVM ERROR REASON CODE: X'00002000', CICS HANGS

A fix is available

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APAR status

  • Closed as program error.

Error description

  • CICS issues message:
    .
    DFHAP1300DFHAP1300 The JVM at address X'aa' on thread X'xx' has
    encountered an error (reason code: X'00002000') and has
    requested further diagnostic data from CICS.
    .
    CICS eventually hangs and is cancelled. The joblogs show 0C4s
    occurring in DFHKESTX. The problem occurred because an
    incorrect ESTAE is established by module DFHCDK64 when the JVM
    makes a domain call into CICS.
    .
    The AP1300 dump shows the failing task is processing a DFHRZLN
    CANCEL request. This normally cancels a timer element (if one
    is running) and then freemains a RZOFSNSR control block
    Instead, CICS trace shows an elapsed time before the next
    trace which is a message domain call out of the JVM reporting
    a serious error.
    .
    The dump at time of hang shows there are 2 J9 TCBs which have
    taken abend0C4s in DFHKESTX. The 0C4s are occurring during CICS
    shutdown. The J9 TCBs are being detached which drives the CICS
    ESTAE exit, DFHKESTX. But the J9 TCBs both take the 0C4 on
    entry to DFHKESTX. The ESTAE environment was set up when the
    code in the JVM made a domain call to Request Streams via
    DFHCDK64. DFHCDK64 is an amode 64 module and should issue a
    call to indicate this state, but failed to do so meaning the
    ESTAE was never set up correctly.
    .
    It appears that the DFHRZLN CANCEL request probably took a
    program check due to the inconsistent state of RZ control
    blocks. This will have driven DFHKESTX which immediately
    program checks due to the bad ESTAE. This means that CICS never
    captured any Kernel error data. Z/OS will deliver the 0C4 in
    DFHKESTX to the next ESTAE handler (the JVM ESTAE). The JVM
    will not expect this abend so it eventually issues the AP1300.
    .
    Additional Symptom(s) Search Keyword(s):
    KIXREVxxx
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS Users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: Abend0C4 in DFHKESTX (the CICS ESTAE    *
    *                      exit) when it is called with a          *
    *                      parameter list in the wrong amode.      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A Java TCB was DETACHed during an immediate shutdown of CICS
    resulting in a call to the CICS ESTAE, DFHKESTX. This was
    called with a parameter list in AMODE(31) resulting in an
    abend 0C4 when it attempted to address one of the parameters
    in AMODE(64).
    The ESTAE exit was incorrectly set up by DFHCDK64 which
    is the interface between Java and the CICS domains.
    
    Additional keywords: S0C4 abendS0C4 abend33E 33E SYSSTATE
                         ESTAEX JVM
    

Problem conclusion

  • DFHCDK64 has been altered to correctly set up the ESTAE
    parameter list in AMODE 64.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PI54404

  • Reported component name

    CICS TS Z/OS V4

  • Reported component ID

    5655S9700

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-12-17

  • Closed date

    2016-04-15

  • Last modified date

    2016-05-04

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

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

    PI60413 UI37059 UI37060

Modules/Macros

  • DFHCDK64 DFJ@H360
    

Fix information

  • Fixed component name

    CICS TS Z/OS V4

  • Fixed component ID

    5655S9700

Applicable component levels

  • R70D PSY UI37060

       UP16/04/22 P F604

  • R700 PSY UI37059

       UP16/04/22 P F604

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.

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Document Information

Modified date:
04 May 2016