如何获取 Java.exe/jvm.dll 的符号文件来分析崩溃核心转储文件？

Question

我有一个在 Websphere 应用程序服务器上运行的 Java 应用程序。 当我分析系统崩溃核心转储文件时，我得到一些如下信息：

ERROR: Symbol file could not be found.  Defaulted to export symbols for J9THR23.dll 

How can I get symbol files for Java?

提前致谢。

更多详情请参见：

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*                                                                             *
*                        Exception Analysis                                   *
*                                                                             *
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*** ERROR: Symbol file could not be found.  Defaulted to export symbols for J9THR23.dll - 
*************************************************************************
***                                                                   ***
***                                                                   ***
***    Your debugger is not using the correct symbols                 ***
***                                                                   ***
***    In order for this command to work properly, your symbol path   ***
***    must point to .pdb files that have full type information.      ***
***                                                                   ***
***    Certain .pdb files (such as the public OS symbols) do not      ***
***    contain the required information.  Contact the group that      ***
***    provided you with these symbols if you need this command to    ***
***    work.                                                          ***
***                                                                   ***
***    Type referenced: ntdll!_PEB                                    ***
***                                                                   ***
*************************************************************************
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for j9jit23.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for java.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for j9gc23.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for jvm.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for jclscar_23.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for j9ute23.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for J9PRT23.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for j9vm23.dll - 
*** ERROR: Symbol file could not be found.  Defaulted to export symbols for DBGHELP.DLL - 

Alice Kong

Answer 1

您可以在此站点获取 JDK 的调试版本。

http://download.java.net/jdk6/

查找 jdk-6u12-ea-bin-b03-windows-i586-debug-22dec2008.jar，91.47 MB

​​ 它包括 .pdb 文件

Answer 2

看起来调试器正在寻找 PDB 文件，据我所知，java 应用程序的调试信息不​​是 PDB 文件。 PDB 文件是在创建 Windows 本机应用程序时由 VisualStudio 生成的，因此调试器似乎正在寻找应用程序服务器的调试符号。 不知道WebSphere是否有自己的调试版本。 另一方面，如果您想要调试 java 应用程序的符号，则只需使用 -g 选项重新编译它。