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PI72025: CREATING OR DELETING CROSS VOB HLINKS CAN LEAD TO 'DEAD MAN LOCKTIMEOUT' ERROR

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Creating or deleting hyperlinks that span VOBs (common in a UCM
    setup) in IBM Rational ClearCase can lead to a situation where
    two processes are waiting on each other for a lock on one of the
    VOB databases. This will lead to the Dead Man Lock Timeout to be
    triggered, making one of the two operations to fail.
    Symptoms:
    db_server(14591): Error: Deadman lock timeout.  Client
    "clientA,pid==18769,euid==UNIX:UID-num, No command" idle while
    holding locks.
    db_server(14591): Warning:
    "clientA,pid==18769,euid==UNIX:UID-num, No command" cmd:  db:
    db_arrow_get held for 60 seconds a "r" lock in the usual area in
    <vob-storage>/db!
    
    Workaround:
    Retry the operation
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of ClearCase UCM.                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * Creating or deleting hyperlinks that span VOBs (common in a  *
    * UCM setup) in ClearCase can lead to a situation where two    *
    * processes are waiting on each other for a lock on one of the *
    * VOB databases. This will lead to the Dead Man Lock Timeout   *
    * to be triggered, making one of the two operations to fail.   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    

Problem conclusion

  • A fix is available in ClearCase versions 8.0.1.15, 9.0.0.5 and
    9.0.1.1
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI72025

  • Reported component name

    CC&CC MSITE WIN

  • Reported component ID

    5724G3300

  • Reported release

    801

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-11-09

  • Closed date

    2017-09-15

  • Last modified date

    2017-09-15

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

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

Fix information

  • Fixed component name

    CC&CC MSITE WIN

  • Fixed component ID

    5724G3300

Applicable component levels

  • R801 PSY

       UP

  • R900 PSY

       UP

  • R901 PSY

       UP

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Document Information

Modified date:
09 September 2021