如何通過命令行讀取Java堆轉儲（無GUI）

Question

我已經ssh進入一臺機器並運行一個java程序。退出一段時間後，我得到一個堆轉儲並將其發送到一個文件中java_pid28356.hprof如何使用命令行工具讀取該文件以找出導致轉儲的原因？

Answer 1

less %DUMP_FILE_DIR%/java_pid28356.hprof 

您也可以嘗試ParseHeapDump.sh - 日食內存分析器的一部分（你可以谷歌，但我張貼下面的腳本爲您提供方便）

#!/bin/sh 
# 
# This script parses a heap dump. 
# Adjust the path to java, version 5 or later, and the heap size as required. 
# Suitable for 64-bit and 32-bit Java, but a 64-bit Java is required 
# for larger heap sizes. 
# 
# Usage: ParseHeapDump.sh <path/to/dump.dmp.zip> [report]* 
# 
# The leak report has the id org.eclipse.mat.api:suspects 
# The top component report has the id org.eclipse.mat.api:top_components 
# 

java -Xmx3072M -jar "`dirname "$0"`"/plugins/org.eclipse.equinox.launcher_1*.jar -consoleLog -application org.eclipse.mat.api.parse "$@"