IBM Support

IT32233: MQ logger does not check the eye catcher or version before usingthe log record

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APAR status

  • Closed as program error.

Error description

  • A queue manager is started with a particular MQ version. Then
the user reverts back to a
lower MQ version and then starts the queue manager. If the log
record version
is different between the MQ version versions, the queue manager
could fail to
start with unexpected errors that are not helpful to understand
the problem.
Similar problem might also occur because of corrupted queue
manager log records.

Local fix

  • 



Problem summary


    

  • ****************************************************************
USERS AFFECTED:
Users starting queue manager after reverting back MQ from higher
MQ version to lower MQ version or with corrupted log records


Platforms affected:
MultiPlatform

****************************************************************
PROBLEM DESCRIPTION:
MQ did not check log record version before processing the log
record causing
unhelpful error messages during queue manager startup failure.

    



Problem conclusion


    

  • MQ code has been generated to check the log record version
before processing the log record, in order to generate a more
meaningful error message if the queue manager is being
incorrectly started using an older product version.

It remains invalid to start a queue manager at a lower version
(CMDLEVEL) than the level at which it was previously run.

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

Version    Maintenance Level
v9.0 LTS   9.0.0.11
v9.1 LTS   9.1.0.6
v9.x CD    9.1.5

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
    IT32233
    • 

  • Reported component name
    IBM MQ BASE MP
    • 

  • Reported component ID
    5724H7271
    • 

  • Reported release
    914
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2020-03-19
    • 

  • Closed date
    2020-06-26
    • 

  • Last modified date
    2020-06-26
    • 





    

  • 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
    IBM MQ BASE MP
    • 

  • Fixed component ID
    5724H7271
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"914","Line of Business":{"code":"LOB45","label":"Automation"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            27 June 2020
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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