Grails makes it very easy to configure datasources for different environments (development, test, production) in its DataSources.groovy file, but there seems to be no facili
The following post seems to be the best source of information on the subject:
How to get mutli-dataSource in grails
It boils down to:
Only the first datasource will have dynamic finder methods.
If its a really simple query you are after and don't mind not having the ORM features you could use Groovy SQL or the native SQL features of Hibernate.