3654958 - DB6: Backup failure due to disk error

• Db2 backup operation failed with disk error.
  
  
• db2diag.log (under /db2/<SID>/db2dump)
  
  Example:
  

  2025-09-03-10.18.49.370468+330 I802574876E1455       LEVEL: Error
  PID     : 13632                TID : 140305105938176 PROC : db2sysc 0
  INSTANCE: db2abc               NODE : 000            DB   : abc     
  HOSTNAME: abcde
  EDUID   : 8304                 EDUNAME: db2pfchr (abc) 0
  FUNCTION: DB2 UDB, oper system services, sqloReadVLow, probe:100
  MESSAGE : ZRC=0x860F0003=-2045837309=SQLO_DERR "disk error occurred (DOS)"
            DIA8402C A disk error has occurred.
  DATA #1 : Codepath, 8 bytes
  7:9:25
  DATA #2 : String, 17 bytes
  preadv() failed !

  
  2025-09-03-10.18.59.599576+330 I802577884E678        LEVEL: Error
  PID     : 13632                TID : 140417051911936 PROC : db2sysc 0
  INSTANCE: db2abc               NODE : 000            DB   : abc
  APPHDL  : 0-16361              APPID: *LOCAL.db2abc.250909153107
  AUTHID  : DB2abc               HOSTNAME: abcde
  EDUID   : 9639                 EDUNAME: db2bm.9611.4 (abc) 0
  FUNCTION: DB2 UDB, buffer pool services, sqlbServiceDirectReadVRequest, probe:6903
  MESSAGE : ZRC=0x860F0003=-2045837309=SQLO_DERR "disk error occurred (DOS)"
            DIA8402C A disk error has occurred.
  DATA #1 : String, 31 bytes
  Error in sqlbServiceDirectReadV
  DATA #2 : unsigned integer, 4 bytes
  2

  
  2025-09-03-10.18.59.607749+330 I802578563E632        LEVEL: Severe
  PID     : 13632                TID : 140417051911936 PROC : db2sysc 0
  INSTANCE: db2abc               NODE : 000            DB   : abc
  APPHDL  : 0-16361              APPID: *LOCAL.db2abc.250909153107
  AUTHID  : DB2abc               HOSTNAME: abcde
  EDUID   : 9639                 EDUNAME: db2bm.9611.4 (abc) 0
  FUNCTION: DB2 UDB, buffer pool services, sqlbpfParallelDirectReadV, probe:7121
  MESSAGE : ZRC=0x860F0003=-2045837309=SQLO_DERR "disk error occurred (DOS)"
            DIA8402C A disk error has occurred.
  DATA #1 : String, 26 bytes
  Error during direct Read V

  
  2025-09-03-10.18.59.682298+330 I802602032E958        LEVEL: Error
  PID     : 13632                TID : 140303663097600 PROC : db2sysc 0
  INSTANCE: db2abc               NODE : 000            DB   : abc
  APPHDL  : 0-16361              APPID: *LOCAL.db2abc.250909153107
  AUTHID  : DB2abc               HOSTNAME: abcde
  EDUID   : 9640                 EDUNAME: db2bm.9611.0 (abc) 0
  FUNCTION: DB2 UDB, database utilities, sqlubReadDMS, probe:368
  MESSAGE : ZRC=0x870F0009=-2029060087=SQLO_EOF "the data does not exist"
            DIA8506C Unexpected end of file was reached.
  DATA #1 : String, 20 bytes
  Object access error:
  DATA #2 : Pool ID, PD_TYPE_POOL_ID, 2 bytes
  26

• SAP on IBM Db2 for Linux, Unix and Windows

Backup failure, disk error, DOS, preadv(), DIA8402C, DIA8506C, object access error, unexpected end of file, sqlbServiceDirectReadV , KBA , BC-DB-DB6 , DB2 Universal Database for Unix / NT , BC-DB-DB6-DBA , Database Administration , Problem