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PM70992: WEBSPHERE MQ V710 CHIN ABEND 878-10 BECAUSE SUBPOOL 0, KEY 8 IS FILLED WITH XSTBS

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Error DescriptionÏ
    CHIN ABEND 878-10 BECAUSE SUBPOOL 0, KEY 8 IS FILLED WITH
    XSTBs, The chinit trace shows the rriAccept block is not being
    correctly freed, leading to a build up of these blocks over
    time. Eventually this can lead to storage exhaustion in the
    chinit address space, particularly when running with a small
    REGION size.
    
    It appears that the fix for PK90638, which addressed this in an
    earlier release, has been regressed as a result of changes in
    this area at 710
    

Local fix

  • Local FixÏ
    none
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
    *                 Release 1 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: Abend 878-10 in channel initiator due   *
    *                      to build up of XSTBs containing         *
    *                      rriAccept blocks in subpool 0 key 8,    *
    *                      following multiple attempts to start    *
    *                      channels with no matching channel       *
    *                      definition, which is reported by        *
    *                      CSQX519E.                               *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    During channel startup storage for a rriAccept block is obtained
    to contain information required for the channel while it is
    binding status.
    If an error occurs while the channel is still binding (for
    example, an attempt to start an unknown channel) this storage is
    not freed.
    

Problem conclusion

  • rriAcceptSessReceive has been changed to free the rriAccept
    block in the event of an error being detected during the binding
    phase of channel startup.
    100Y
    CMQXRMSA
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

  • ×**** PE13/03/14 FIX IN ERROR. SEE APAR PM79595  FOR DESCRIPTION
    

APAR Information

  • APAR number

    PM70992

  • Reported component name

    WMQ Z/OS V7

  • Reported component ID

    5655R3600

  • Reported release

    100

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2012-08-15

  • Closed date

    2012-08-30

  • Last modified date

    2013-03-28

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

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

    UK81429 IV27277

Modules/Macros

  • CMQXRMSA
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R100 PSY UK81429

       UP12/10/10 P F210 Ž

Fix is available

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Document Information

Modified date:
28 March 2013