OA41356: IST074I CONTACT FOR ID = CTC FAILED - INSUFFICIENT STORAGE ISSUED AT CTC ACTIVATION.

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APAR status

  • Closed as program error.

Error description

  • IST074I CONTACT FOR ID = CTC FAILED - INSUFFICIENT STORAGE
    issued at CTC activation.  Trace showed that VTAM was issuing
    XID7#1 channel program before PUNS had processed the received
    XID0.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All running CTC, MPC or AHHC                 *
    *                 connections.                                 *
    ****************************************************************
    * PROBLEM DESCRIPTION: IST074I CONTACT FOR ID = xxxxxxxx       *
    *                      FAILED - INSUFFICIENT STORAGE issued    *
    *                      at CTC/MPC/AHHC activation.             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The problem is summarized as follows:
    
    1) A CTC, MPC or AHHC connection is being activated.
    2) SIO CC1 occurs when writing XID0 while in XCNSSXPD
       or XCNSSYPD state.
    3) The asynchronous ATTN was inadvertently saved
       (XCNSAVATTN), causing VTAM to issue a SIO for
       XID7#1 channel program before PUNS had processed the
       received XID0.
    4) Erroneous processing from this error lead to message
       IST074I CONTACT FOR ID = xxxxxxxx FAILED - INSUFFICIENT
       STORAGE.
    

Problem conclusion

  • ISTTSCCA - Has been modified to ignore an ATTN if X-side or
               Y-side pending and SIO CC1 occurs.  If the ATTN
               for the SIO CC1 arrives while the XCNCB PU PAB is
               running, the ATTN is also ignored.  These changes
               were not implemented for FICON connections.
    
    ISTTSCXI - Modified segment XSIDPEND to reset the XCNSAVATTN and
               NCBASYNC bits when we are the low side of the
               connection.
    
    ISTTSCXR - Modified segment PROCXID7 to reset the XCNSAVATTN and
               NCBASYNC bits when we are the low side of the
               connection (XCNSS71P).
    
    ISTTSCXE,
    ISTTSC8E - Included for maintenance purposes.
    

Temporary fix

Comments

APAR Information

  • APAR number

    OA41356

  • Reported component name

    VTAM V4 MVS/ESA

  • Reported component ID

    569511701

  • Reported release

    1A0

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-01-31

  • Closed date

    2013-02-19

  • Last modified date

    2013-02-19

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

    OA26886

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

Modules/Macros

  • ISTTSCCA ISTTSCXE ISTTSCXI ISTTSCXR ISTTSC8E
    

Fix information

  • Fixed component name

    VTAM V4 MVS/ESA

  • Fixed component ID

    569511701

Applicable component levels

  • R1A0 PSY

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Document information


More support for:

z/OS family

Software version:

1A0

Operating system(s):

z/OS

Reference #:

OA41356

Modified date:

2013-02-19

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