IV19698: JDMPVIEW X/J COMMAND FAILS WITH CORRUPT DATA

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: java.lang.ClassCastException:
  com.ibm.j9ddr.view.dtfj.image.J9DDRCorruptData incompatible with
  com.ibm.dtfj.java.JavaObject
          at
  com.ibm.jvm.dtfjview.commands.xcommands.XJCommand.printObjectsFr
  omName(XJCommand.java:133)
          at
  com.ibm.jvm.dtfjview.commands.xcommands.XJCommand.printObjects(X
  JCommand.java:103)
          at
  com.ibm.jvm.dtfjview.commands.xcommands.XJCommand.printHeapObjec
  ts(XJCommand.java:95)
          at
  com.ibm.jvm.dtfjview.commands.xcommands.XJCommand.doCommand(XJCo
  mmand.java:76)
          at
  com.ibm.jvm.dtfjview.commands.xcommands.XCommand.run(XCommand.ja
  va:59)
          at
  com.ibm.java.diagnostics.Context.tryCommand(Context.java:101)
          at
  com.ibm.java.diagnostics.Context.execute(Context.java:64)
          at
  com.ibm.java.diagnostics.Context.execute(Context.java:84)
          at
  com.ibm.jvm.dtfjview.Session.execute(Session.java:791)
          at
  com.ibm.jvm.dtfjview.Session.runInteractive(Session.java:753)
          at com.ibm.jvm.dtfjview.Session.run(Session.java:710)
          at
  com.ibm.jvm.dtfjview.DTFJView.launch(DTFJView.java:39)
          at com.ibm.jvm.dtfjview.DTFJView.main(DTFJView.java:33)
  .
  The "x/j" command in sdk/bin/jdmpview fails to list all
  instances of a class on the heap when there is corruption
  present in the core file.
  

Local fix

Problem summary

• The jdmpview x/j command fails to handle to situation where
  there are corrupt objects on the heap
  

Problem conclusion

• This defect will be fixed in:
  7.0.0 SR1
  6.0.1 SR2
  .
  The command now correctly handles this situation
  

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

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R260 PSY

     UP