jmap 

-XX:+HeapDumpOnOutOfMemoryError

$ jmap -dump:format=b,file=java_242677.hprof 242677

Dumping heap to /home/yzj/java_242677.hprof ...

Heap dump file created

jps 

jps - Java Virtual Machine Process Status Tool

https://docs.oracle.com/javase/7/docs/technotes/tools/share/jps.html

JAVA jps命令详解

https://www.cnblogs.com/tulianghui/p/5914535.html

jinfo

jinfo - Configuration Info

https://docs.oracle.com/javase/7/docs/technotes/tools/share/jinfo.html

jvm工具之jinfo命令的使用

http://fetosoft.cn/archives/2020/02/16/163

Arthas

Arthas（阿尔萨斯） 能为你做什么？

https://arthas.aliyun.com/doc/

$ curl -O https://arthas.aliyun.com/arthas-boot.jar

$  java -jar arthas-boot.jar  242677

程序CPU占用率飙升，如何定位线程的堆栈信息？