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IV19699: CLASSCASTEXCEPTION RUNNING JDMPVIEW 'WHATIS' COMMAND

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: ClassCastException running the 'whatis' command
    when analysing a core dump using the sdk/bin/jdmpview tool.
    .
    Stack Trace: ava.lang.ClassCastException:
    com.ibm.j9ddr.view.dtfj.image.J9DDRCorruptData incompatible with
    com.ibm.dtfj.java.JavaObject
            at
    com.ibm.jvm.dtfjview.commands.WhatisCommand.isStartOfObj(WhatisC
    ommand.java:184)
            at
    com.ibm.jvm.dtfjview.commands.WhatisCommand.findInHeap(WhatisCom
    mand.java:77)
            at
    com.ibm.jvm.dtfjview.commands.WhatisCommand.findInRuntime(Whatis
    Command.java:66)
            at
    com.ibm.jvm.dtfjview.commands.WhatisCommand.run(WhatisCommand.ja
    va:49)
            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:776)
            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)
    .
    

Local fix

Problem summary

  • When encountering corrupt data in the core dump, the jdmpview
    tool failed on an internal exception.
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR1
    6.0.1 SR2
    .
    jdmpview has been fixed to handle the corrupt data exception and
    continue, with a corrupt data message
    output to the user.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV19699

  • 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

    2012-04-13

  • Closed date

    2012-04-13

  • Last modified date

    2012-04-13

  • 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



Document information

More support for: Runtimes for Java Technology
Virtual Machine

Software version: 260

Reference #: IV19699

Modified date: 13 April 2012