Script: Map Orphan Login and Users

,

Execute the script in the Master Database.

To execute the script, use the below syntax. No need to pass any parameters.

/* execute the SP now */

exec sp_fixOrphanusers

Note: This works well for SQL 2005/2008 Serves,

/********************************** READ ME ***********************************************

Run the procedure in the Master database. No need to pass any parameters. It remaps orphaned 
users in the current database to EXISTING logins of the same name. This procedure helps when 
a database is created by restoring a backup to a new database,, or by attaching the datafiles 
to a new server. 
*******************************************************************************************/

/*
--If parameter is Auto_Fix, database user is mapped with same named SQL Server login. 
 It may also create login, if not present and then map the login to the user.
 ----------------------------------------------------------------------------------
 Command to map an orphaned user to a login that is not present but will be created
 -----------------------------------------------------------------------------------
 EXEC sp_change_users_login 'Auto_Fix', 'TESTUSER', null,'pwd'
 GO 
 
--If parameter is Report, it lists the orphaned users and their security identifiers (SID). 
--If parameter is Update_One, it links the specified database user to an existing SQL Server login.
*/

SET QUOTED_IDENTIFIER OFF
GO
IF OBJECT_ID('dbo.sp_fixOrphanusers') IS NOT NULL
BEGIN
DROP PROCEDURE dbo.sp_fixOrphanusers
IF OBJECT_ID('dbo.sp_fixOrphanusers') IS NOT NULL
PRINT 'Unable to Drop the PROCEDURE dbo.sp_fixOrphanusers'
ELSE
PRINT 'PROCEDURE dbo.sp_fixOrphanusers is Dropped'
END
GO

-- Write the procedure in the master--
--Start of the SP.
CREATE PROCEDURE dbo.sp_fixOrphanusers
AS
set nocount on
BEGIN
-- Declare the variables --
DECLARE @username varchar(25)
--Declare the cursor--
DECLARE fixOrphanusers CURSOR 
FOR
SELECT UserName = name FROM sysusers
WHERE issqluser = 1 and (sid is not null and sid  0x0)
and suser_sname(sid) is null
ORDER BY name
--Fetch the UserName and SID Value --
select UserName = name, UserSID = sid from sysusers 
 where issqluser = 1 
 and (sid is not null and sid  0x0) 
 and (len(sid) <= 16) 
 and suser_sname(sid) is null 
 order by name 
OPEN fixOrphanusers
FETCH NEXT FROM fixOrphanusers
INTO @username
WHILE @@FETCH_STATUS = 0
BEGIN
--IF @username='dbo' -- select IS_MEMBER('db_owner')
If IS_MEMBER('db_owner') =1
BEGIN 
EXEC sp_changedbowner 'sa' /* this maps dbo back to the SA login */
END
ELSE
BEGIN
EXEC sp_change_users_login 'update_one', @username, @username
END
FETCH NEXT FROM fixOrphanusers
INTO @username
END
CLOSE fixOrphanusers
DEALLOCATE fixOrphanusers
END
go
IF OBJECT_ID('dbo.sp_fixOrphanusers') IS NOT NULL
PRINT 'PROCEDURE dbo.sp_fixOrphanusers has been created'
ELSE
PRINT 'Failed to create the PROCEDURE dbo.sp_fixOrphanusers'
go --- End Of the SP.

/* execute the SP now */

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