Javamelody SQL monitoring with Grails plugin

Javamelody is amazing tool for live monitoring. It has great Grails plugin which makes it very easy to use. Only issue I had with it is SQL monitoring configuration.
According to documentation there are several ways to configure data sources:

1. magic - you don't have to do anything, it just works
2. javamelody.datasources property in GrailsMelodyConfig.groovy - you just specify datasources
3. replacing JDBC driver with Javamelody proxy
4. specifying java option - javamelody.datasources

Unfortunately, all internal configuration options (1, 2, 3) didn't worked. As I investigated (quickly) it looks like there is no dataSource bean available for BeanPostProcessor and it tries to proxy after all connections were already picked by application.
So only specifying java command line option worked for me. Otherwise - great tool. It is also possible to specify multiple data sources with command line like:

-Djavamelody.datasources=java:comp/env/ds1,java:comp/env/ds2