How do I produce a heap dump with only a JRE?

Question

We have a JRE installed on our production environment, but not a JDK. The versions of the JRE and OS are below.

[me@mymachine ~]$ java -version
java version &         


        

Answer 1

 kill -3 

thread dump will be sent in to /logs/catalina.out file

OR use combination below :

-XX:+UnlockDiagnosticVMOptions -XX:+LogVMOutput -XX:LogFile=~/jvm.log

if you want to redirect., but for that you have to run your process through command line.