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IT38355: DB2 SERVER MAY CRASH WITH SEGMENTATION FAULT

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • SQL statements issued may trap and bring the instance
    down with FODC generation.
    
    This type of db2 crash will show below generic messages in
    db2diag.log :
    
    
    2021-03-25-17.35.25.990209+480 I13360299A1267 LEVEL: Error
    PID : 19464234 TID : 61998 PROC : db2sysc 0
    INSTANCE: db2inst1 NODE : 000 DB : SAMPLE
    APPHDL : 0-59952 APPID: X.X.X.X.0000.210325093641
    AUTHID : AUTHUSER HOSTNAME: HOST1
    EDUID : 61998 EDUNAME: db2agent (SAMPLE) 0
    FUNCTION: DB2 UDB, base sys utilities, sqleagnt_sigsegvh,
    probe:8
    MESSAGE : Error in agent servicing application with
    AUTHORIZATION ID:
    DATA #1 : Hexdump, 129 bytes
    0x0A000100623E92D1 : 5441 5F4D 4F4E 2020 0000 0000 0000 0000
    AUTHUSER ........
    ? .
    
    
    2021-03-25-17.35.44.938383+480 E13453350A1282 LEVEL: Severe
    PID : 19464234 TID : 61998 PROC : db2sysc 0
    INSTANCE: db2inst1 NODE : 000 DB : SAMPLE
    APPHDL : 0-59952 APPID: X.X.X.X.0000.210325093641
    AUTHID : AUTHUSER HOSTNAME: HOST1
    EDUID : 61998 EDUNAME: db2agent (SAMPLE) 0
    FUNCTION: DB2 UDB, oper system services, sqloEDUCodeTrapHandler,
    probe:90
    MESSAGE : ADM14011C A critical failure has caused the following
    type of error:
    "Trap". The DB2 database manager cannot recover from the
    failure.
    First Occurrence Data Capture (FODC) was invoked in the
    following
    mode: "Automatic". FODC diagnostic information is located in the
    following directory:
    "/db2dump/db2inst1/dump/FODC_Trap_2021-03-25-17.35.25.620651_000
    0/".
    DATA #1 : Signal Number Recieved, 4 bytes
    11
    
    
    
    Checking the trap file for this PID.TID trap file -
    19464234.61998.000.trap.txt for thread 61998 will show below
    stack with top frame in sqlra_check_each_privs:
    
    -------Frame------ ------Function + Offset------
    0x090000001168CB6C
    sqlra_check_each_privs__FP8sqlrr_cbP16sqlra_cached_variP19sqlra_
    list_req_privP10sqlr_rolesbPb + 0xFB4
    0x09000000114A29C4
    sqlra_check_privs__FP8sqlrr_cbP16sqlra_cached_variP19sqlra_list_
    req_privP10sqlr_rolesbPb + 0x65C
    0x090000000F314454
    sqlra_check_stmt_privs__FP8sqlrr_cbiP19sqlra_list_req_privP16sql
    ra_cached_varbPb + 0x350
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * all                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to 11.5.7 or higher                                  *
    ****************************************************************
    

Problem conclusion

  • Upgrade to 11.5.7 or higher
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT38355

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B50

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2021-09-13

  • Closed date

    2021-12-01

  • Last modified date

    2022-03-29

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

    IT37005

  • 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

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"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":"11.5"}]

Document Information

Modified date:
30 March 2022