PM29739: STORAGE GROWTH IN NATIVE MEMORY OF X18 BYTE ALLOCATIONS WHEN CREATING JAVACORE DUMPS.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Creating a javacore programmatically, such as when calling
    com.ibm.jvm.Dump.JavaDump()
    in a class,  or by requesting them through WebSphere via
    the modify command, a storage growth in native memory of x18
    bytes is seen in SP2 K8. The storage will contain the string
    IBM-1047 in both ascii and ebcdic . The storage is not freed
    until the jvm terminates.
    The native stack where the allocations occur:
    CEEVGHPH      0D5B6A70  +00000000
    etoa_nl_langinfo
                  22840AE8  +00000086
    iconv_get     7CB068C0  +0000001E
    parse_catalog
                  7CB09740  +0000030A
    j9nls_lookup_message
                  7CB0AC00  +00000484
    j9nls_vprintf
                  7CB0B5B0  +00000024
    j9nls_printf  7CB0B108  +0000003C
    reportDumpRequest
                  7CA05FF8  +00000062
    JavaCoreDumpWriter::JavaCoreDumpWriter
                  7CA21BC0  +000000EA
    runJavadump   7CA29668  +00000018
    

Local fix

  • the workaround is to NOT capture javacores programmatically.
     Console dumps or svc dumps can be captured if dumps are needed
    

Problem summary

  • The problematic code path resulted in functions that were
    converting from EBCDIC to ASCII and back to EBCDIC, instead use
    the original EBCDIC value.
    

Problem conclusion

  • This defect will be fixed in:
    5.0.0 SR12 FP5
    6.0.0 SR9 FP2
    .
    The JVM has been updated to avoid the calls to e2a_string() and
    a2e_string().
    .
    To obtain the fix:
    Install build 20110111 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM29739

  • Reported component name

    JAVA 5 Z/OS 31

  • Reported component ID

    620500105

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-01-03

  • Closed date

    2011-02-03

  • Last modified date

    2011-07-13

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    PM31575 PM46027

Fix information

  • Fixed component name

    JAVA 5 Z/OS 31

  • Fixed component ID

    620500105

Applicable component levels

  • R500 PSN

       UP



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Document information


More support for:

z/OS family

Software version:

5.0

Reference #:

PM29739

Modified date:

2011-07-13

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