How can I have a common user for Multitenant grails application?

Question

Hi,

I want to develop a multitenant grails application using grails plugin multitenant. I plan to have individual dbschema per tenant as per the requirement(backup and data security). Also I have a special case where a set of common users need to have access to data of all the tenants. With single database I hope it is easier to do. But with multiple database, I am not sure.

Can anyone suggest me a good option to achive this or a better idea to achieve this?

Thanks.

Ramesh