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IZ54547: RUNNING "DB2PD -STACK ALL" SEVERAL TIMES WILL HANG DB2FMPR PROCESSES ON SUN, CAN LEAD TO AN INSTANCE / DB HANG

Fixes are available

DB2 Version 9.1 Fix Pack 9  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 10  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 11  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 12  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

  • Running "db2pd -stack all" several times, will put db2fmpr into
an invalid state. The main thread ends up in the following
endless loop (pstack output):

-----------------  lwp# 1 / thread# 1  --------------------
 ffffffff7a0cd6f8 nanosleep (...)
 ffffffff7e1230e4 sqlerDumpFmpThreadInfo (...) + 294
 ffffffff7e470310 sqlo_db2fmp_sigpre (...) + 68
 ffffffff7a0cd424 __sighndlr (...) + c
 ffffffff7a0c17d4 call_user_handler (...) + 3e0
 ffffffff7a0cec84 _syscall6 (...) + 20
 ffffffff7e41ab68 sqlccipcdarihandshake (...) + 178
 ffffffff7e122658 sqlerMasterThreadListener (...) + d68
 00000001000388bc main (0, 0, 28, 0, 100085413, 1) + 6a4
 00000001000381bc _start (0, 0, 0, 0, 0, 0) + 17c

Agents executing a fenced procedure afterwards can hang in the
following stack:

sqlccipcinit (...) + 0x678
sqlccinit (...) 0x52c
sqlerReceiveFmpFini (...) + 0x13f8
sqlerReceiveFmpFini (...) + 0x744
sqlerGetFmpThreadEntry (...) + 0x488
sqlerGetFmpFromPool (...) + 0x9b0
...

Local fix

  • Do not run db2pd -stack all on SUN platform.

Problem summary

  • USERS AFFECTED:
All customers on SUN platform

PROBLEM DESCRIPTION:
See ERROR DESCRIPTION

PROBLEM SUMMARY:
See ERROR DESCRIPTION

Problem conclusion

  • Problem was first fixed in Version 9.1 Fix Pack 9.

Temporary fix

  • See LOCAL FIX.

Comments

  • 



APAR Information




    

  • APAR number
    IZ54547
    • 

  • Reported component name
    DB2 UDB ESE SOL
    • 

  • Reported component ID
    5765F4102
    • 

  • Reported release
    910
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2009-07-06
    • 

  • Closed date
    2010-04-16
    • 

  • Last modified date
    2010-04-16
    • 





    

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

    • 

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

    
IZ54548
    

    • 



Fix information


    

  • Fixed component name
    DB2 UDB ESE SOL
    • 

  • Fixed component ID
    5765F4102
    • 



Applicable component levels


    

  • R810  PSN
       UP
    • 

  • R820  PSN
       UP
    • 

  • R910  PSN
       UP
    • 

  • R950  PSN
       UP
    • 








      
              
                            

              

              [{"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":"910"}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            04 October 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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