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IV11016: MEMORY LEAK WHEN SHMGET() CALL FAILS TO ALLOCATE MEMORY

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: In Java 626:
JVMJ9VM015W Initialization error for library j9gc26(2): Failed
to instantiate heap; 256M requested
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
In Java 6/5: A memory leak is observed when using 64k pages
.
Stack Trace: N/A
.

Local fix

  • Java 626: Set the environment variable: EXTSHM=OFF
Java 6/5: Use -Xlp4k as a Java Option

Problem summary

  • The problem is caused when a call to shmget() fails, the JVM
does not detach the shared memory using shmdt()

Problem conclusion

  • This defect will be fixed in:
6.0.0 SR10
5.0.0 SR13
6.0.1 SR1
.
The JVM has been update to ensure it detaches shared memory when
we fail to get the appropriate page size using shmget()

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV11016
    • 

  • Reported component name
    JAVA 5 J9 COMMO
    • 

  • Reported component ID
    620500127
    • 

  • Reported release
    500
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2011-11-21
    • 

  • Closed date
    2011-11-21
    • 

  • Last modified date
    2011-11-21
    • 





    

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

    
IV11011
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    JAVA 5 J9 COMMO
    • 

  • Fixed component ID
    620500127
    • 



Applicable component levels


    

  • R500  PSN
       UP
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            21 November 2011
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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