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IV73638: DTFJ API COM.IBM.DTFJ.JAVA.JAVATHREAD.GETOBJECT() RETURNS INCORR ECT DATA WHEN READING IN-FLIGHT SYSTEM DUMPS

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APAR status

  • Closed as program error.

Error description

  • Error Message: The DTFJ API
    com.ibm.dtfj.java.JavaThread.getObject() returns a
    com.ibm.dtfj.java.JavaThread object containing incorrect data,
    when reading a system dump. An incorrect object size is returned
    when the getSize() method is called subsequently on the
    com.ibm.dtfj.java.JavaThread object.
    .
    Stack Trace: N/A
    .
    The system dump was captured while a GC was in progress and
    contains in-flight data.
    

Local fix

Problem summary

  • The problem is caused when the DTFJ API is used to read an
    in-flight dump. The information obtained for Java threads in the
    JVM is inconsistent with the state of the Java heap.
    

Problem conclusion

  • The DTFJ API has been updated to make additional checks on the
    Java thread data, to avoid returning incorrect information.
    .
    This APAR will be fixed in the following Java Releases:
       7 R1 SR3 FP10  (7.1.3.10)
       7    SR9 FP 10 (7.0.9.10)
       6 R1 SR8 FP7   (6.1.8.7)
       8    SR1 FP10  (8.0.1.10)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, information about the available
    Service Refreshes and Fix Packs can be found at:
               https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV73638

  • Reported component name

    J9 COMMON CODE

  • Reported component ID

    620700127

  • Reported release

    270

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-05-27

  • Closed date

    2015-05-27

  • Last modified date

    2015-06-29

  • 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

  • R270 PSY

       UP

  • R260 PSY

       UP

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Document Information

Modified date:
21 February 2022