IBM Support

IT32258: Memory leak in the amqzlaa0 process when the queue manager is processing MQSUBRQ call for a retained publication

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APAR status

  • Closed as program error.

Error description

  • An increase in memory consumption maybe seen from the amqzlaa0
process if the queue manager is processing MQSUBRQ call for a
"retained publication".

Local fix

  • 



Problem summary


    

  • ****************************************************************
USERS AFFECTED:
Users of retained publications.


Platforms affected:
MultiPlatform

****************************************************************
PROBLEM DESCRIPTION:
While preparing a message for sending to a subscriber, a few
hundred bytes of memory is leaked.

    



Problem conclusion


    

  • The MQ code has been corrected to ensure that the memory is
returned to the system when no longer needed.

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

Version    Maintenance Level
v8.0       8.0.0.16
v9.0 LTS   9.0.0.11
v9.1 CD    TBC.
v9.1 LTS   9.1.0.6

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
    IT32258
    • 

  • Reported component name
    IBM MQ BASE MP
    • 

  • Reported component ID
    5724H7251
    • 

  • Reported release
    800
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2020-03-22
    • 

  • Closed date
    2020-05-01
    • 

  • Last modified date
    2020-05-01
    • 





    

  • 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
    5724H7251
    • 



Applicable component levels


    








      
              
                            

              

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

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            02 May 2020
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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