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IT25992: HADR GRACEFUL TAKEOVER ON PURESCALE COULD TIME OUT WAITING FOR PRIMARY DATABASE TO PROGRESS DUE TO GLFH LOTCH CONTENTION.

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APAR status

  • Closed as program error.

Error description

  • Sometimes a pd dump function would need to acquire glfh lock to
    check if the database has been poisoned.
    
    However, this action could be blocked as another member could be
    holding the glfh lock, preventing the dump function to do a
    simple check.
    
    The stack should show something like this:
    
    #4  0x00007ffff026a0e6 in sqlpUpgradeLock(sqeBsuEdu*,
    SQLP_LOCK_INFO*) () from
    /home/db2inst1/sqllib/lib64/libdb2e.so.1
    
    #5  0x00007ffff025ce0c in sqlpValLotch::getSDComplex(unsigned
    long, unsigned long, int const*, char const*, unsigned long) ()
    from /home/db2inst1/sqllib/lib64/libdb2e.so.1
    
    #6  0x00007ffff035bbf2 in sqlrr_dump_ffdc(sqlrr_cb*, int, int)
    () from /home/db2inst1/sqllib/lib64/libdb2e.so.1
    
    #7  0x00007ffff09e60fc in sqlzeDumpFFDC () from
    /home/db2inst1/sqllib/lib64/libdb2e.so.1
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 11.1 Mod 4 Fixpack 4 or higher                *
    ****************************************************************
    

Problem conclusion

  • First fixed in Db2 11.1 Mod 4 Fixpack 4
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT25992

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-08-16

  • Closed date

    2018-11-27

  • Last modified date

    2018-11-27

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

    IT25965

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

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RB10 PSN

       UP

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSEPGG","label":"DB2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
27 November 2018