将核心文件转储转换为堆转储
我从一台机器上获取了一个核心转储文件，文件大小为 2GB。我可以使用 gdb 打开该文件，并查看获取核心文件时正在运行的进程。我想将此文件转换为堆转储，以便查看更多有用的信息。我尝试运行以下命令但没有成功。有谁知道为什么文件没有转换为堆转储？我该如何执行此操作？
我尝试了以下命令，但出现错误并且从未创建文件。
jmap -heap:format=b file=jvmcore.hprof /usr/lib/jvm/jdk1.5.0_22/ jvm.core 用法：jmap \[option\] \
与上面我使用以下命令得到的结果相同：
jmap -heap:format=b file=jvmcore.hprof /usr/lib/jvm/jdk1.5.0_11/ jvm .core
并且尝试此命令会出现错误：
jmap -heap:format=b file=jvmcore.hprof jvm.core 从可执行文件附加到核心 jvm.core file=jvmcore.hprof，请稍候...附加到核心文件时出错：无法附加到核心文件
I have an taken a core dump file from a machine, with file size 2GB. I can open this file with gdb and see the processes that were running when I took the core file. I want though to convert this file into a heap dump in order to see more useful information. I tried running the below commands without any success. Does anyone have an idea why the file is not converted into heap dump? How can I perform this action?
I tried the bellow commands but I get errors and the file never is being created.
jmap -heap:format=b file=jvmcore.hprof /usr/lib/jvm/jdk1.5.0_22/ jvm.core Usage: jmap \[option\] \<pid\> (to connect to a live java process) or jmap \[option\] \<executable\> \<core\> (to connect to a core file) or jmap \[option\] \[server_id@\]\<remote server IP or hostname\> (to connect to a remote debug server) where option must be one of: \<no option\> to print same info as Solaris pmap \-heap to print java heap summary \-heap:format=b to dump java heap in hprof binary format \-histo to print histogram of java object heap \-permstat to print permanent generation statistics \-h | -help to print this help message
Same result as above i got with the following command:
jmap -heap:format=b file=jvmcore.hprof /usr/lib/jvm/jdk1.5.0_11/ jvm.core
And trying this command gets an error:
jmap -heap:format=b file=jvmcore.hprof jvm.core Attaching to core jvm.core from executable file=jvmcore.hprof, please wait... Error attaching to core file: Can't attach to the core file
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