IC86512: PCOM: ONE OF MULTIPLE TN3270E CONSOLE SESSIONS OFTEN HANGS AFTER UPGRADING PCOMM TO 6.0.4

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APAR status

  • Closed as program error.

Error description

  • Customer is using mutiple sessions of Pcomm as zOS consoles
    on each PC.
    The sessions are connected to host OSA-ICC TN3270E gateway.
    After customer upgraded Pcomm from 5.6 to 6.0.4, one of
    the console sessions often hangs and stop receiving console
    messages. The session that hangs is not specific.
    If a session hangs, the other sessions are still working.
    The trace shows that the session received 2 byte garbaged
    data that is followed by TN3270E header. So the session
    cannot recognize the response flag in TN3270E header
    and does not send the response to TN3270E gateway.
    Customer verified that the same hang issue occurs on v6.0.4
    but on v6.0.2 or prior releases of Pcomm.
    And this occurs only when the multiple console screens are
    being updated rapidly.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of multiple TN3270 sessions        *
    ****************************************************************
    * PROBLEM DESCRIPTION: Intermittent TN3270 console session     *
    *                      hang and disconnect                     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    After installing PCOM 6.0.4 Refresh Pack, users with multiple
    TN3270 console sessions will see intermittent session hangs
    and disconnects. This is caused by thread unsafe code handling
    outbound data streams from multiple hosts.
    

Problem conclusion

  • PCSTLNET.DLL has been changed to correctly handle outbound data
    from multiple TN3270 hosts.
    
    Fix scheduled for PCOM 6.0.6 Refresh Pack
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC86512

  • Reported component name

    PCOMM V5 COMBO-

  • Reported component ID

    5639I7000

  • Reported release

    601

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-09-12

  • Closed date

    2012-09-19

  • Last modified date

    2012-09-19

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

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

    IP23452

Modules/Macros

  • PCSTLNET
    

Fix information

  • Fixed component name

    PCOMM V5 COMBO-

  • Fixed component ID

    5639I7000

Applicable component levels

  • R600 PSY

       UP

  • R601 PSY

       UP



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Document information


More support for:

Personal Communications

Software version:

6.0.1

Reference #:

IC86512

Modified date:

2012-09-19

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