# How to connect through multiple databases's users/roles

**URL:** <https://www.ruby-forum.com/t/how-to-connect-through-multiple-databasess-users-roles/129774>\
**Category:** Rails\
**Created:** [February 21, 2008, 12:39pm UTC](https://www.ruby-forum.com/t/how-to-connect-through-multiple-databasess-users-roles/129774 "2008-02-21T12:39:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![eduludi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/e5b9ba/32.png) [@eduludi](https://www.ruby-forum.com/u/eduludi)\
**Post date:** [February 21, 2008, 12:39pm UTC](https://www.ruby-forum.com/t/how-to-connect-through-multiple-databasess-users-roles/129774/1 "2008-02-21T12:39:21Z")

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Hi. I’m trying to authenticate users against the database’s user/roles  
in PostgreSql, instead to use in ‘database.yml’ an almighty user (like  
‘root’).  
Can I use ‘ActiveRecord::Base.establish\_conection’ method to do that?  
And is this related whit ActiveRecord::Base.allow\_concurrency = true and  
ActiveRecord::Base.verify\_active\_connections?  
I know about issues related with this point (Katana Suicide  
Concurrency), but I really need connect each system’s user as single  
user/role. I think this must be able to do. Thanks.