IBM Support

IV19640: EXTENDING BOOTCLASSPATH MORE THAN ONCE MAY CAUSE ASSERTION WHEN SHARED CLASSES ENABLED

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: j9shr.1009   *   ** ASSERTION FAILED ** at
ClasspathItem.cpp:189: ((0 ))
.
Stack Trace: N/A
.

Local fix

  • This issue can be worked around by not extending the
bootclasspath, or disabling the shared class cache using
-Xshareclasses:none.

Problem summary

  • When the bootclasspath is extended more than once using
java.lang.instrument.appendToBootstrapClassLoaderSearch(), or
the JVMTI API AddToBootstrapClassLoaderSearch(), in rare cases
this could cause an assertion when running the JVM with the
shared cache enabled. The -Xshareclasses option controls the
behavior of the shared cache.

Problem conclusion

  • This defect will be fixed in:
7.0.0 SR1
6.0.1 SR2
6.0.0 SR11
.
The JVM has been updated to prevent the assertion from occurring
when extending the bootclasspath more than once.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV19640
    • 

  • Reported component name
    J9 COMMON CODE
    • 

  • Reported component ID
    620700127
    • 

  • Reported release
    260
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt
    • 

  • Submitted date
    2012-04-12
    • 

  • Closed date
    2012-04-12
    • 

  • Last modified date
    2012-04-12
    • 





    

  • 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
    J9 COMMON CODE
    • 

  • Fixed component ID
    620700127
    • 



Applicable component levels


    

  • R260  PSY
       UP
    • 

  • R600  PSY
       UP
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSNVBF","label":"Runtimes for Java Technology"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.1","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            22 February 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
Page Feedback