RE: Creating a DB User *not* on current Machine
- From: petery@xxxxxxxxxxxxxxxxxxxx ("Peter YangMSFT]")
- Date: Mon, 11 Jun 2007 09:05:14 GMT
Hello Alex,
From your description, I understand that you'd like to create a DB user toexist in your database matched to a not existing Windows login before you
detach/attach the database to a new server.
I'm afraid this option is not available due to the behavior of SQL
Server.When you move a database from one server that is running SQL Server
to another server that is running SQL Server, a mismatch may occur between
the security identification numbers (SIDs) of the logins in the master
database and the users in the user database.
By default, SQL Server 7.0, SQL Server 2000, and SQL Server 2005 provide
the sp_change_users_login system stored procedure to map these mismatched
users. However, you can only use the sp_change_users_login stored procedure
to map standard SQL Server logins and you must perform these mapping for
one user at a time.
In SQL Server 7.0 or later versions, you can maintain the mapping between
the logins in the master database and the users in the user database by
using the SIDs. This mapping is required to maintain correct permissions
for the logins in the user databases. When a login on the new server does
not have matched SID of one of the user on the database moved, you have to
create a new database base user to map them. Also, it's not possible to
create a local user on a different machine.
The best option is that you use a domain user so that the login exist on
the both SQL Servers. After you move the database, the SID is matched
automatically and you don't need to re-create the DB user for the login.
You may want to see the following article for more details:
314546 HOW TO: Move Databases Between Computers That Are Running SQL Server
http://support.microsoft.com/?id=314546
240872 HOW TO: Resolve Permission Issues When You Move a Database Between
http://support.microsoft.com/?id=240872
HOW TO: Transfer Logins and Passwords Between Instances of SQL Server
http://support.microsoft.com/kb/246133
If anything is unclear or you have further comments, please feel free to
post back. Thank you.
Best Regards,
Peter Yang
MCSE2000/2003, MCSA, MCDBA
Microsoft Online Community Support
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