OA40684: ABEND0C4 PIC 11 IN IEAVEPST

A fix is available

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Abend0C4 pic 11 in IEAVEPST. Waiting on TWO ECBs in IKTLOGR.
    Abend0c4 occurred due to one of the ECB storage was freed.
    Addional symptoms:
    TSOLOGON ESTAI
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All TSO users using LOGONHERE reconnect      *
    *                 option.                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND0C4 in IEAVEPST during the         *
    *                      post processing of IKTLOGR.             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    This problem may be described as follows:
      1. TSO user was already logged on with the userid User1.
         User1 session was active with the terminal TERMA.
      2. TSO user tried to logon on a different terminal TERMB
         with the userid User1 and LOGONHERE reconnect option.
      3. IKTLOGR received control to process the LOGONHERE
         reconnect processing. It found the session of the
         User1 and terminal TERMA. It scheduled the SRB of
         IKTIST01 to drive the lostterm routine IKTLTERM. It
         also set the timer to cleanup the new address space
         if needed. It issued WAIT request to wait for the
         lostterm routine IKTLTERM and timer routine to post
         its ECBs.
      4. Lostterm routine IKTLTERM received control to process
         further. It exited without posting the ECB of IKTLOGR
         due to error. It issued the ABEND622 to cleanup the
         address space of the step 1. This freed up its ECB
         storage.
      5. Timer routine received control and it posted the timer
         ECB of IKTLOGR. This caused the ABEND0C4 in post routine
         due to freed ECB storage of the step 4.
    

Problem conclusion

  • IKTLOGR has been changed to wait on only one ECB of the lostterm
    routine IKTLTERM. Timer routine of IKTLOGR has been changed
    to cleanup the address space with the ABEND622 if it receives
    control after long wait.
    IKTLTERM has been changed to validate the address space of
    IKTLOGR before posting its ECB.
    IKTTVWA has been changed to remove TVWALECB field.
    

Temporary fix

Comments

APAR Information

  • APAR number

    OA40684

  • Reported component name

    VTAM V4 MVS/ESA

  • Reported component ID

    569511701

  • Reported release

    1D0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-11-01

  • Closed date

    2012-11-27

  • Last modified date

    2013-02-04

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

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

    UA67314 UA67315

Modules/Macros

  • IKTLOGR  IKTLTERM IKTTVWA
    

Fix information

  • Fixed component name

    VTAM V4 MVS/ESA

  • Fixed component ID

    569511701

Applicable component levels

  • R1C0 PSY UA67314

       UP13/01/08 P F301

  • R1D0 PSY UA67315

       UP13/01/08 P F301

Fix is available

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Document information


More support for:

z/OS family

Software version:

1D0

Operating system(s):

z/OS

Reference #:

OA40684

Modified date:

2013-02-04

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