jmap

Java memory map tool. More information: https://docs.oracle.com/en/java/javase/20/docs/specs/man/jmap.html.

jmap java_pid

jmap -heap filename.jar java_pid

jmap -histo java_pid

jmap -dump:format=b,file=path/to/file java_pid

jmap -dump:live,format=b,file=path/to/file java_pid