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IT30526: ADDING DEBUG CODE FOR SQLBFIX - BFIX DETECTED AN ERROR

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APAR status

  • Closed as program error.

Error description

  • This APAR adds additional debug code for the issue indicated by
    the following db2diag.log message:
    
    2017-06-28-00.18.24.790509+120 I6008E6255            LEVEL:
    Severe
    PID     : 14780                TID : 139659493500672 PROC :
    db2sysc 0
    INSTANCE: DB2INST1               NODE : 000            DB   :
    MYDB
    APPHDL  : 0-1691               APPID:
    X.X.X.X.63365.170627191124
    AUTHID  : DB2INST1                HOSTNAME: hostserver
    EDUID   : 1182                 EDUNAME: db2agent (MYDB) 0
    FUNCTION: DB2 UDB, Common Trace API, sqlbfix, probe:104
    DATA #1 : String, 25 bytes
    bfix detected an error -
    DATA #2 : Boolean, 1 bytes
    false
    DATA #3 : Boolean, 1 bytes
    true
    DATA #4 : String, 20 bytes
    Current Descriptor =
    ...
    PageHead from FixCB =
    DATA #11: Page header, PD_TYPE_SQLB_PAGE_HEAD, 48 bytes
    pageHead: {tbspSeed:12;obj:15840;type:0} bphPPNum:2079399
    bphOPNum:2079399
      begoff:                      48
      datlen:                   16336
      revnum:                    1280
      pagelsn:     000001E34160DE40
      flag:                        2a
      future32:                    0
      cbits1to31:            da921e16
      cbits32to63:            ccd3472
    ...
    Cached Page Header
    DATA #21: Page header, PD_TYPE_SQLB_PAGE_HEAD, 48 bytes
    pageHead: {tbspSeed:12;obj:15840;type:0} bphPPNum:30287225
    bphOPNum:2079399
      begoff:                      48
      datlen:                   16336
      revnum:                    1280
      pagelsn:     000001E34160DE40
      flag:                        2a
      future32:                    0
      cbits1to31:            da921e16
      cbits32to63:            ccd3472
    
    The cached page header and the header in the internal structures
    of Db2 differ. The instance is trapping.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
    ****************************************************************
    

Problem conclusion

  • First fixed in Db2 11.1 Mod 4 Fixpack 5
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT30526

  • 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

    2019-10-08

  • Closed date

    2020-01-16

  • Last modified date

    2022-03-29

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

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

    IT30528

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RB10 PSN

       UP

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
03 May 2022