IBM Support

IT29233: INSTANCE PANIC WHEN PAGE CLEANER AIO FAILS DUE TO OUT-OF-MEMORY ERROR.

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APAR status

  • Closed as program error.

Error description

  • If a Page Cleaner is returned an out-of-memory error (SQLO_MEM)
    while collecting outstanding AIO it will cause the instance to
    panic on DPF and pureScale environments. The follow messages can
    be seen in db2diag.log:
    
    EDUID   : 122                  EDUNAME: db2pclnr (XXXX) 6
    FUNCTION: DB2 UDB, oper system services, sqloLioAIOCollect,
    probe:100
    MESSAGE : ZRC=0x870F0024=-2029060060=SQLO_MEM "out of memory"
              DIA8533C The system memory limit was reached.
    
    EDUID   : 122                  EDUNAME: db2pclnr (XXXX) 6
    FUNCTION: DB2 UDB, buffer pool services,
    sqlbClnrAsyncWriteCompletion, probe:40
    MESSAGE : ZRC=0x870F0024=-2029060060=SQLO_MEM "out of memory"
              DIA8533C The system memory limit was reached.
    
    EDUID   : 122                  EDUNAME: db2pclnr (XXXX) 6
    FUNCTION: DB2 UDB, buffer pool services,
    sqlbClnrAsyncWriteCompletion, probe:300
    
    EDUID   : 122                  EDUNAME: db2pclnr (BLUDB) 6
    FUNCTION: DB2 UDB, buffer pool services,
    sqlbClnrAsyncWriteCompletion, probe:301
    DATA #1 : Buffer page descriptor, PD_TYPE_SQLB_BPD, 256 bytes
        Pagekey: {pool:1;obj:12;type:128} PPNum:53238
    
    EDUID   : 122                  EDUNAME: db2pclnr (XXXX) 6
    FUNCTION: DB2 UDB, RAS/PD component, pdStartFODC, probe:10
    MESSAGE : ADM14001C  An unexpected and critical error has
    occurred: "Panic".
    

Local fix

  • Ensure there is sufficient memory and swap available to Db2.
    

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

    IT29233

  • 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

    2019-05-22

  • Closed date

    2020-01-16

  • Last modified date

    2020-01-16

  • 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

    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:
16 January 2020