# How to connect multiple databases's users/roles

**URL:** <https://www.ruby-forum.com/t/how-to-connect-multiple-databasess-users-roles/129661>\
**Category:** Rails\
**Created:** [February 20, 2008, 2:08pm UTC](https://www.ruby-forum.com/t/how-to-connect-multiple-databasess-users-roles/129661 "2008-02-20T14:08:05Z")\
**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 20, 2008, 2:08pm UTC](https://www.ruby-forum.com/t/how-to-connect-multiple-databasess-users-roles/129661/1 "2008-02-20T14:08:05Z")

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Hi. I’m trying to authenticate users against database’s user/roles  
(PostgreSql), instead use an almighty user set in database.yml  
Can i use ActiveRecord::Base.establish\_conection() method? 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  
database user/role. I think this must be able to do. Thanks.