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IT38766: MQ appliance queue manager fail over fails if the queue manager file system is in use

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APAR status

  • Closed as program error.

Error description

  • A queue manager is unable to failover successfully manually with
sethapreferred
or sethagrp commands or automatically due to unexpected failures
when the queue
manage file system is in use(For example, queue manager logs
are being accessed by the
REST API or dspmqerr command)

Local fix

  • 



Problem summary


    

  • ****************************************************************
USERS AFFECTED:
All MQ appliance users running queue managers in HA
configuration.


Platforms affected:
MultiPlatform

****************************************************************
PROBLEM DESCRIPTION:
If the queue manager file system is in use while the failover
happens then an attempt
is made to restrictively terminate the process that is accessing
the file system.  However, the logic did not detect a complete
set of processes that were accessing the filesystem, and so did
not attempt to terminate them.

    



Problem conclusion


    

  • The code has been modified to correct the detection of processes
accessing the queue manager filesystem.

---------------------------------------------------------------
The fix is targeted for delivery in the following PTFs:

Version    Maintenance Level
v9.2 LTS   9.2.0.4
v9.x CD    9.2.4

The latest available maintenance can be obtained from
'WebSphere MQ Recommended Fixes'
http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037

If the maintenance level is not yet available information on
its planned availability can be found in 'WebSphere MQ
Planned Maintenance Release Dates'
http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
---------------------------------------------------------------

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT38766
    • 

  • Reported component name
    MQ APPL M2002 V
    • 

  • Reported component ID
    5737H4701
    • 

  • Reported release
    920
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    YesHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2021-10-22
    • 

  • Closed date
    2021-11-03
    • 

  • Last modified date
    2021-11-18
    • 





    

  • 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
    MQ APPL M2002 V
    • 

  • Fixed component ID
    5737H4701
    • 



Applicable component levels


    








      
              
                            

              

              [{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SS5K6E","label":"IBM MQ Appliance"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"920"}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            19 November 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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