Urgent:Changing Login name of a DB user

Posted on 2006-06-11
Medium Priority
Last Modified: 2008-01-09
Hey experts,

  In the list of users of a DB, I have the following:
  dbo (with Login Name ecmp)
  ecmp (with no Login Name)
  I want to change it to become as follows:
  dbo (with Login Name sa)
  ecmp (with Login Name ecmp)
  any help on the fastest way to do that?
Question by:mte01
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LVL 143

Accepted Solution

Guy Hengel [angelIII / a3] earned 2000 total points
ID: 16881816

exec sp_change_users_login 'Update_One' , 'dbo', 'sa'
exec sp_change_users_login 'Update_One' , 'ecmp', 'ecmp'

Author Comment

ID: 16881881

I fixed it after using the AutoFix option; There was an error in using yours regarding the sa login:
Terminating this procedure. 'sa' is a forbidden value for the login name parameter in this procedure.

It's amazing how you know all these internal stored procedures...many thanks for your super help!!

Author Comment

ID: 16881884
Apparently I need to do the change on user dbo too.....it's a bit urgent..any help how to do that??
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 16881910
>Terminating this procedure. 'sa' is a forbidden value for the login name parameter in this procedure.
interesting. I never tried it on dbo/sa, so good to know.

>Apparently I need to do the change on user dbo too.....it's a bit urgent..any help how to do that??
this looks like you made ecmp user the dbowner.
I know that with sp_changedbowner you can change the ownership to another user of the database, which makes that one dbo, but I don't know how to make the dbo as such.
possibly, this might work:
* use sp_changedbowner to make ecmp user the owner
* drop the dbo
* grant sa login permissions to the database
* use sp_changedbowner to make that new user the owner of the db

Author Comment

ID: 16881933
I solved it by detaching the DB, re-attaching it with sa the owner, then doing the same thing again with ecmp being the owner (which I want it to be), and it did the trick!

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