IZ44495: VERBOSE CLASS LOADING AND VERBOSE GARBAGE COLLECTION CANNOT BE U SED TOGETHER

APAR status

• Closed as program error.

Error description

• Error Message: Unhandled exception
  Type=Segmentation error vmState=0x00000000
  J9Generic_Signal_Number=00000004 Signal_Number=0000000b
  Error_Value=00000000 Signal_Code=00000001
  ...
  Module=/opt/WebSphere61FEP/AppServer/java/jre/bin/libj9vrb23.so
  Module_base_address=0000002A9A167000
  .
  Stack Trace: N/A
  .
  On SR9, the two options 'Verbose class loading' and 'Verbose
  garbage collection' generate the correct output in
  native_stderr.log but java core dump appears and server can't
  start.
  

Local fix

• Do not specify both 'Verbose class loading' and 'Verbose garbage
  collection'
  

Problem summary

• The verbose class unloading hook was erroneously changed to use
  the class loader unload hook.
  

Problem conclusion

• The JVM has been updated to use the correct unload hook.
  

Temporary fix

Comments

APAR Information

• 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

  JAVA 5 J9 COMMO

• Fixed component ID

  620500127

Applicable component levels

• R500 PSY

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