IBM Support

IT16014: MQ Explorer memory growth when browsing queue

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APAR status

  • Closed as program error.

Error description

  • Browsing messages on queues with IBM MQ Explorer increases
commit size memory each time the queue is browsed. This memory
is not released and continues to grow each time a queue is
browsed or refreshed.

Local fix

  • 



Problem summary


    

  • ****************************************************************
USERS AFFECTED:
All users of IBM MQ Explorer making use of the browse queue
functionality.


Platforms affected:
Linux on Power, Linux on S390, Linux on x86, Linux on x86-64,
Linux on zSeries, Windows

****************************************************************
PROBLEM DESCRIPTION:
When the browse dialog was closed the objects it contained were
not made eligible for garbage collection due to a circular
memory reference. Because the objects were never garbage
collected by the JVM each invocation of the browse dialog would
cause the memory usage of the IBM MQ Explorer to increase.

    



Problem conclusion


    

  • The circular reference has been removed, thereby making the
objects which back the browse dialog eligible for garbage
collection. This causes the memory used to be reduced when the
JVM runs the garbage collector.

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

Version    Maintenance Level
v7.5       7.5.0.8
v8.0       8.0.0.6
v9.0 CD    9.0.2
v9.0 LTS   9.0.0.1

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
    IT16014
    • 

  • Reported component name
    WEBSPHERE MQ 7.
    • 

  • Reported component ID
    5724H7240
    • 

  • Reported release
    750
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2016-07-20
    • 

  • Closed date
    2016-10-28
    • 

  • Last modified date
    2017-06-01
    • 





    

  • 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
    WEBSPHERE MQ 7.
    • 

  • Fixed component ID
    5724H7240
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSDEZSF","label":"IBM WebSphere MQ Managed File Transfer for z\/OS"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            31 March 2023
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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