Jira - javamelody do not show sql statistic about javamelody HOT 3 OPEN

I also follow https://code.google.com/p/javamelody/wiki/AtlassianPlugin, use 
jndi-datasource and add Resource element in tomcat server.xml but it doesn't 
show sql statistic

1) Do you have restarted the server?
2) Does it work if you install JIRA from a fresh download and configure JIRA 
following the documentation at 
https://code.google.com/p/javamelody/wiki/AtlassianPlugin ? (it works for other 
people)

Hi,

1. Yes, I do
2. No, it doesn't work (it works for other statistic except SQL Statistic)

Thanks