Issue in SQL-server migration to new domain

Question

Hello,
I have a scenario, where i need to migrate SQL 2005 servers db's ( around 30, small ones) to new server in a new domain. Destinationserver is 2012 R2, running SQL2014
Domains have trust between them, and users have already been migrated to new domain. Users are using the databases with NT authing from the new domain (new logins & users have been created to old sql-server).
I have backed up db's from old server and restored them in new server. After that, i restored logins with following article's script:
http://support.microsoft.com/kb/918992
I cleaned from the login script logins that are not in use, change the domainname to new in CREATE LOGIN phase (for the users who did not have already login from new domain) and the script ran without errors.
User Mappings are like they should be on logins, however, the user & schema names are indicating to old domain. If i try to change them, i receive error about SID mismatch. This affects also users, who have already had new logins for new domain, their
usernames on mappings are also changed to old domain's username. What is causing this?

Answer 1

Hi,
Could you try the following to migrate the logins and check the result?
1. You may drop all the windows login. Modify the script generated by sp_help_revlogin step and replace create login
to drop login.
2. Use the script generated by sp_help_revlogin step to create
Logins. Modify login name to accommodate new domain name.
3. Grant server level roles using the output from:
Generate Server level role related info :
SELECT 'EXEC sp_addsrvrolemember ''' +
p.name + ''' , ''' + r.name + ''';'
FROM
sys.server_principals r
INNER JOIN sys.server_role_members m ON r.principal_id = m.role_principal_id
INNER JOIN sys.server_principals p ON
p.principal_id = m.member_principal_id
WHERE
r.type ='R'
Sample Output :-
EXEC sp_addsrvrolemember 'sa' , 'sysadmin';
4. Map the SIDS using below command for all DB by using ALTER USER. For example:
ALTER USER [DomainA\UserA] with login = [DomainB\UserA]
See:
http://blogs.technet.com/b/mdegre/archive/2011/06/27/can-i-move-sql-server-to-another-domain.aspx
Here some useful articles:
http://www.databasejournal.com/features/mssql/article.php/3922256/Re-generating-SQL-Server-Logins.htm
http://support.microsoft.com/kb/918992/en-us
http://support.microsoft.com/kb/240872
Thanks.
Tracy Cai
TechNet Community Support