Manuali utente per HP (Hewlett-Packard) 5992-1918

Sommario

• Java™ Troubleshooting Guide for HP-UX Systems

  1
• Table of Contents

  3
• About This Document

  11
• 1 Diagnostic and Monitoring Tools and Options

  13
  • 1.1 HP-UX Java Tools and Options Tables

    13
    • 1.1.1 Crash Analysis Tools

      13
    • 1.1.2 Hung and Deadlocked Processes

      13
    • 1.1.3 Fatal Error Handling

      14
    • 1.1.4 Monitoring Memory Use

      14
    • 1.1.5 Performance Tools

      15
    • 1.1.6 Miscellaneous Tools and Options

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    • 1.1.7 JDK Tools Not Available on HP-UX

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  • 1.2 Ctrl-Break Handler

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  • 1.3 Fatal Error Log (hs_err_pid<pid>.log)

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  • 1.4 gcore

    18
  • 1.5 gdb

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    • 1.5.1 Java Stack Unwind Features

      19
    • 1.5.2 gdb Subcommands for Java VM Debugging

      19
  • 1.6 HPjconfig

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  • 1.7 HPjmeter

    24
    • 1.7.1 Static Data Analysis

      26
      • 1.7.1.1 Using HPjmeter to Analyze Profiling Data

        26
      • 1.7.1.2 Using HPjmeter to Analyze Garbage Collection Data

        28
    • 1.7.2 Dynamic Data Analysis

      28
      • 1.7.2.1 Using HPjmeter to Monitor Applications

        28
      • 1.7.2.2 Connect to the Node Agent From the HPjmeter Console

        29
      • 1.7.2.3 Set Session Preferences

        30
      • 1.7.2.4 Viewing Monitoring Metrics During Your Open Session

        32
      • 1.7.2.5 Running the HPjmeter Sample Programs

        32
        • 1.7.2.5.1 Sample Memory Leak Application

          33
        • 1.7.2.5.2 Sample Thread Deadlock Application

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  • 1.8 HPjtune

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  • 1.9 hat

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  • 1.10 hprof

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  • 1.11 java.security.debug System Property

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  • 1.12 JAVA_TOOL_OPTIONS Environment Variable

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  • 1.13 jconsole (1.5+ only)

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  • 1.14 jdb

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  • 1.15 jhat

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  • 1.16 jps (1.5+ only)

    40
  • 1.17 jstat (1.5+ only)

    40
  • 1.18 jstatd (1.5+ only)

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  • 1.19 jvmstat Tools

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  • 1.20 -verbose:class

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  • 1.21 -verbose:gc

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  • 1.22 -verbose:jni

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  • 1.23 visualgc

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  • 1.24 -Xcheck:jni

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  • 1.25 -Xverbosegc

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  • 1.26 -XX:ErrorFile

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  • 1.27 -XX:+HeapDump and _JAVA_HEAPDUMP Environment Variable

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    • 1.27.1 Other HeapDump Options

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    • 1.27.2 -XX:+HeapDumpOnCtrlBreak

      48
    • 1.27.3 -XX:+HeapDumpOnOutOfMemoryError

      49
    • 1.27.4 -XX:+HeapDumpOnly

      49
    • 1.27.5 Using Heap Dumps to Monitor Memory Usage

      49
  • 1.28 -XX:OnError

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  • 1.29 -XX:+ShowMessageBoxOnError

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• 2 Useful System Tools for Java Troubleshooting

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  • 2.1 GlancePlus

    51
  • 2.2 tusc

    51
  • 2.3 Prospect

    51
  • 2.4 HP Caliper

    51
  • 2.5 sar

    51
  • 2.6 vmstat

    51
  • 2.7 iostat

    51
  • 2.8 swapinfo

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  • 2.9 top

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  • 2.10 netstat

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  • 2.11 Other Tools

    52
• 3 Getting Help from Hewlett-Packard

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  • 3.1 Problem Report Checklist

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  • 3.2 Collecting Problem Data

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    • 3.2.1 Collecting Core File Information

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      • 3.2.1.1 Core File Checklist

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        • 3.2.1.1.1 Estimate Core File Size

          54
        • 3.2.1.1.2 Ensure Process Can Write Large Core Files

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        • 3.2.1.1.3 Verify Amount of Disk Space

          55
        • 3.2.1.1.4 Check If Directory Supports Large File Systems

          55
        • 3.2.1.1.5 Ensure Permissions Allow Core Files

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      • 3.2.1.2 Generating a Core File

        56
      • 3.2.1.3 Verifying a Core File

        56
    • 3.2.2 Collecting Fatal Error Log Information

      56
    • 3.2.3 Collecting Stack Trace Information

      57
  • 3.3 Collecting System Information

    58
  • 3.4 Collecting Java Environment Information

    58
    • 3.4.1 Environment Variables

      58
    • 3.4.2 Libraries

      59
  • 3.5 Packaging Files

    60
• 4 Core File Analysis

  61
  • 4.1 Sample Java Application

    61
    • 4.1.1 StackTraceJob

      61
    • 4.1.2 StackTrace.java

      62
    • 4.1.3 stacktrace.c

      63
  • 4.2 Building the Application

    64
  • 4.3 Verify Core File

    65
  • 4.4 Debugging On Same System

    65
  • 4.5 Packaging Files For Debugging On Different System

    65
  • 4.6 Unpacking Files On Debugging System

    66
  • 4.7 Example gdb Session

    68
  • 4.8 Summary

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• Glossary

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• Index

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