IBM Support

IT31308: IN DB2 PURESCALE EXTENT MOVEMENT MIGHT TIMEOUT AND THEN BRING DBDOWN WHEN LOCKTIMEOUT IS NOT -1

Fixes are available

Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • In pureScale when database configuration parameter LOCKTIMEOUT
is not the
default value -1, an extent movement started by an ALTER
TABLESPACE LOWER HIGH WATER MARK or an ALTER TABLESPACE REDUCE
MAX could return a lock time out error which in return will
bring the system down.

Key entries in db2diag.log :

2019-11-28-06.33.02.188901-300 I1072258134A1106     LEVEL:
Severe
PID     : 7209176              TID : 66395          PROC :
db2sysc 0
INSTANCE: db2inst1              NODE : 000           DB   :
SAMPLE
EDUID   : 66395                EDUNAME: db2ExtMovHelper (SAMPLE)
0
FUNCTION: DB2 UDB, buffer pool services,
sqlbEMHelperEDU::sqlbExtentMovementHelperEntryPoint, probe:12217
MESSAGE : ZRC=0x80100044=-2146435004=SQLP_LTIMEOUT
          "LockTimeOut - tran rollback Reason code 68"
DATA #1 : String, 14 bytes
Error Occurred


2019-11-28-06.33.02.189754-300 I1072259241A966      LEVEL: Info
PID     : 7209176              TID : 66395          PROC :
db2sysc 0
INSTANCE: db2inst1             NODE : 000           DB   :
SAMPLE
HOSTNAME: host1
EDUID   : 66395                EDUNAME: db2ExtMovHelper (SAMPLE)
0
FUNCTION: DB2 UDB, base sys utilities,
sqeLocalDatabase::ForceDBShutdown, probe:16937
DATA #1 : Pointer, 8 bytes
0x0000000000000000
DATA #2 : Boolean, 1 bytes
false
CALLSTCK: (Static functions may not be resolved correctly, as
they are resolved to the nearest symbol)
  [0] 0x090000001ECF8044 ForceDBShutdown__16sqeLocalDatabaseFi +
0x364
  [1] 0x09000000212B315C
sqlbExtentMovementHelperEntryPoint__15sqlbEMHelperEDUFv + 0x49C
  [2] 0x09000000212B2AB8 RunEDU__15sqlbEMHelperEDUFv + 0x38
  [3] 0x090000001E1A4C40 EDUDriver__9sqzEDUObjFv + 0x300
  [4] 0x090000001E086280 sqloEDUEntry + 0x360
  [5] 0x0900000000570E10 _pthread_body + 0xF0
  [6] 0xFFFFFFFFFFFFFFFC ?unknown + 0xFFFFFFFF

Local fix

  • Set database configuration parameter LOCKTIMEOUT to -1 after db2
restart db.

Problem summary

  • ****************************************************************
* USERS AFFECTED:                                              *
* All                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to V11.1.4.6                                         *
****************************************************************

Problem conclusion

  • Upgrade to V11.1.4.6

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT31308
    • 

  • 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
    2019-12-17
    • 

  • Closed date
    2021-03-19
    • 

  • Last modified date
    2021-03-19
    • 





    

  • 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":"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:
            

            04 May 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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