There are times when you may need to reverse the roles of a primary and standby server. This is common when you need to patch the primary server and still need to allow users access to the data. When using database mirroring or SQL clustering as your SQL Server high availability option, reserving the roles of the primary and standby servers is quite easy. With log shipping, however, it is not as straight forward.
You can always bring the standby database online, create a full backup of it, and restore onto the (previously) primary database to initialize it for log shipping. However, this approach can be cumbersome especially if the database is large. The following steps will allow you to reverse log shipping roles without the need to initialize the (new standby) database.
- Disable the log shipping backup job on the primary server.
- On the standby server, run the log shipping copy and restore jobs to restore any remaining transaction log backups.
- Disable the log shipping copy and restore jobs on the secondary server.
- On the primary server, create on last transaction log backup using the NORECOVERY option.
- On the standby server, restore this transaction log backup using the RECOVERY option.
- On the standby server (which will now be the primary server), right click on the database and select Properties -> Transaction Log Shipping. Enable the database to become the primary database and configure the backup and secondary server settings.
Error when launching setup.exe for SQL Server 2012:
"Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately."
This was resolved by deleting the following folder:
C:\Users\%username%\appdata\local\Microsoft_Corporation
- 1. Take the Source Database Backup
- Run the below script in Destination server and copy the result script (This will help you to extract all the permissions on that Database like database permissions and user permissions and user roles permissions)
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IF OBJECT_ID ('sp_hexadecimal') IS NOT NULL
DROP PROCEDURE sp_hexadecimal
GO
CREATE PROCEDURE sp_hexadecimal
@binvalue varbinary(256),
@hexvalue varchar(256) OUTPUT
AS
DECLARE @charvalue varchar(256)
DECLARE @i int
DECLARE @length int
DECLARE @hexstring char(16)
SELECT @charvalue = '0x'
SELECT @i = 1
SELECT @length = DATALENGTH (@binvalue)
SELECT @hexstring = '0123456789ABCDEF'
WHILE (@i <= @length)
BEGIN
DECLARE @tempint int
DECLARE @firstint int
DECLARE @secondint int
SELECT @tempint = CONVERT(int, SUBSTRING(@binvalue,@i,1))
SELECT @firstint = FLOOR(@tempint/16)
SELECT @secondint = @tempint - (@firstint*16)
SELECT @charvalue = @charvalue +
SUBSTRING(@hexstring, @firstint+1, 1) +
SUBSTRING(@hexstring, @secondint+1, 1)
SELECT @i = @i + 1
END
SELECT @hexvalue = @charvalue
GO
print 'sp_help_revlogin stored procedure created'
go
/*
** Create stored procedure 'sp_help_revlogin'
*/
IF OBJECT_ID ('sp_help_revlogin') IS NOT NULL
DROP PROCEDURE sp_help_revlogin
GO
--USE [ADMIN]
GO
/****** Object: StoredProcedure [dbo].[sp_help_revlogin] Script
******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER OFF
GO
CREATE PROCEDURE [dbo].[sp_help_revlogin] @login_name sysname = NULL AS
DECLARE @name sysname
DECLARE @type varchar (1)
DECLARE @hasaccess int
DECLARE @denylogin int
DECLARE @is_disabled int
DECLARE @PWD_varbinary varbinary (256)
DECLARE @PWD_string varchar (514)
DECLARE @SID_varbinary varbinary (85)
DECLARE @SID_string varchar (514)
DECLARE @tmpstr varchar (1024)
DECLARE @is_policy_checked varchar (3)
DECLARE @is_expiration_checked varchar (3)
DECLARE @defaultdb sysname
IF (@login_name IS NULL)
DECLARE login_curs CURSOR FOR
SELECT p.sid, p.name, p.type, p.is_disabled,
p.default_database_name, l.hasaccess, l.denylogin FROM
sys.server_principals p LEFT JOIN sys.syslogins l
ON ( l.name = p.name ) WHERE p.type IN ( 'S', 'G', 'U' ) AND
p.name <> 'sa'
ELSE
DECLARE login_curs CURSOR FOR
SELECT p.sid, p.name, p.type, p.is_disabled,
p.default_database_name, l.hasaccess, l.denylogin FROM
sys.server_principals p LEFT JOIN sys.syslogins l
ON ( l.name = p.name ) WHERE p.type IN ( 'S', 'G', 'U' ) AND
p.name = @login_name
OPEN login_curs
FETCH NEXT FROM login_curs INTO @SID_varbinary, @name, @type,
@is_disabled, @defaultdb, @hasaccess, @denylogin
IF (@@fetch_status = -1)
BEGIN
PRINT 'No login(s) found.'
CLOSE login_curs
DEALLOCATE login_curs
RETURN -1
END
SET @tmpstr = '/* sp_help_revlogin script '
PRINT @tmpstr
SET @tmpstr = '** Generated ' + CONVERT (varchar, GETDATE()) + ' on '
+ @@SERVERNAME + ' */'
PRINT @tmpstr
PRINT ''
WHILE (@@fetch_status <> -1)
BEGIN
IF (@@fetch_status <> -2)
BEGIN
PRINT ''
SET @tmpstr = '-- Login: ' + @name
PRINT @tmpstr
IF (@type IN ( 'G', 'U'))
BEGIN -- NT authenticated account/group
SET @tmpstr = 'CREATE LOGIN ' + QUOTENAME( @name ) + ' FROM
WINDOWS WITH DEFAULT_DATABASE = [' + @defaultdb + ']'
END
ELSE BEGIN -- SQL Server authentication
-- obtain password and sid
SET @PWD_varbinary = CAST( LOGINPROPERTY( @name,
'PasswordHash' ) AS varbinary (256) )
EXEC sp_hexadecimal @PWD_varbinary, @PWD_string OUT
EXEC sp_hexadecimal @SID_varbinary,@SID_string OUT
-- obtain password policy state
SELECT @is_policy_checked = CASE is_policy_checked WHEN 1 THEN
'ON' WHEN 0 THEN 'OFF' ELSE NULL END FROM sys.sql_logins WHERE name =
@name
SELECT @is_expiration_checked = CASE is_expiration_checked
WHEN 1 THEN 'ON' WHEN 0 THEN 'OFF' ELSE NULL END FROM sys.sql_logins
WHERE name = @name
SET @tmpstr = 'CREATE LOGIN ' + QUOTENAME( @name ) + '
WITH PASSWORD = ' + @PWD_string + ' HASHED, SID = ' + @SID_string + ',
DEFAULT_DATABASE = [' + @defaultdb + ']'
IF ( @is_policy_checked IS NOT NULL )
BEGIN
SET @tmpstr = @tmpstr + ', CHECK_POLICY = ' + @is_policy_checked
END
IF ( @is_expiration_checked IS NOT NULL )
BEGIN
SET @tmpstr = @tmpstr + ', CHECK_EXPIRATION = ' +
@is_expiration_checked
END
END
IF (@denylogin = 1)
BEGIN -- login is denied access
SET @tmpstr = @tmpstr + '; DENY CONNECT SQL TO ' + QUOTENAME( @name )
END
ELSE IF (@hasaccess = 0)
BEGIN -- login exists but does not have access
SET @tmpstr = @tmpstr + '; REVOKE CONNECT SQL TO ' + QUOTENAME( @name )
END
IF (@is_disabled = 1)
BEGIN -- login is disabled
SET @tmpstr = @tmpstr + '; ALTER LOGIN ' + QUOTENAME( @name ) + ' DISABLE'
END
PRINT @tmpstr
END
FETCH NEXT FROM login_curs INTO @SID_varbinary, @name, @type,
@is_disabled, @defaultdb, @hasaccess, @denylogin
END
CLOSE login_curs
DEALLOCATE login_curs
RETURN 0
go
print 'logins-----------------------------------------------'
exec sp_help_revlogin
print '--ServerRoles'
set nocount on
declare @srvroles varchar(255)
declare @vnum varchar(255)
create table #srvroles
( srvrolename varchar(255))
create table #rolemember
(rolename varchar(255),
rolemember varchar(255),
rolememberid varbinary(255))
--create table #version(vnum varchar(255))
--insert into #version
--select @@version
--select @vnum = vnum from #version
--if substring(@vnum,1,30) ='Microsoft SQL Server 7.00 - 7'
--begin
-- insert into #srvroles values ('sysadmin')
-- insert into #srvroles values ('securityadmin')
-- insert into #srvroles values ('serveradmin')
-- insert into #srvroles values ('setupadmin')
-- insert into #srvroles values ('processadmin')
-- insert into #srvroles values ('diskadmin')
-- insert into #srvroles values ('dbcreator')
--end
--else
--if substring(@vnum,1,30) ='Microsoft SQL Server 2000 - 8'
--begin
insert into #srvroles values ('sysadmin')
insert into #srvroles values ('securityadmin')
insert into #srvroles values ('serveradmin')
insert into #srvroles values ('setupadmin')
insert into #srvroles values ('processadmin')
insert into #srvroles values ('diskadmin')
insert into #srvroles values ('dbcreator')
insert into #srvroles values ('bulkadmin')
--end
declare srvroles cursor for
select srvrolename from #srvroles
open srvroles
fetch next from srvroles into @srvroles
while @@fetch_status = 0
begin
insert into #rolemember(rolename,rolemember,rolememberid)
exec sp_helpsrvrolemember @srvroles
fetch next from srvroles into @srvroles
end
select 'exec master..sp_addsrvrolemember '+''''+rolemember+''''+',
'+rolename from #rolemember
where rolemember not in ('sa')
drop table #srvroles
drop table #rolemember
--drop table #version
close srvroles
deallocate srvroles
set nocount off
GO
--Role Memberships'
SELECT --rm.role_principal_id,
'EXEC sp_addrolemember @rolename ='
+ SPACE(1) + QUOTENAME(USER_NAME(rm.role_principal_id), '''')
+ ', @membername =' + SPACE(1) +
QUOTENAME(USER_NAME(rm.member_principal_id), '''') AS '--Role
Memberships'
FROM sys.database_role_members AS rm
ORDER BY rm.role_principal_id
--Object Level Permissions'
SELECT
CASE WHEN perm.state != 'W' THEN perm.state_desc ELSE 'GRANT' END + SPACE(1) +
perm.permission_name + SPACE(1) + 'ON '+
QUOTENAME(Schema_NAME(obj.schema_id)) + '.'
+ QUOTENAME(obj.name) collate Latin1_General_CI_AS_KS_WS
+ CASE WHEN cl.column_id IS NULL THEN SPACE(0) ELSE '(' +
QUOTENAME(cl.name) + ')' END
+ SPACE(1) + 'TO' + SPACE(1) + QUOTENAME(usr.name)
+ CASE WHEN perm.state <> 'W' THEN SPACE(0) ELSE SPACE(1) + 'WITH
GRANT OPTION' END AS '--Object Level Permissions'
FROM sys.database_permissions AS perm
INNER JOIN
sys.objects AS obj
ON perm.major_id = obj.[object_id]
INNER JOIN
sys.database_principals AS usr
ON perm.grantee_principal_id = usr.principal_id
LEFT JOIN
sys.columns AS cl
ON cl.column_id = perm.minor_id AND cl.[object_id] = perm.major_id
ORDER BY usr.name
--Database Level Permissions'
SELECT CASE WHEN perm.state <> 'W' THEN perm.state_desc ELSE 'GRANT' END
+ SPACE(1) + perm.permission_name + SPACE(1)
+ SPACE(1) + 'TO' + SPACE(1) + QUOTENAME(usr.name) COLLATE database_default
+ CASE WHEN perm.state <> 'W' THEN SPACE(0) ELSE SPACE(1) + 'WITH
GRANT OPTION' END AS '--Database Level Permissions'
FROM sys.database_permissions AS perm
INNER JOIN
sys.database_principals AS usr
ON perm.grantee_principal_id = usr.principal_id
WHERE
--usr.name = @OldUser
--AND
perm.major_id = 0
ORDER BY perm.permission_name ASC, perm.state_desc ASC
DROP PROCEDURE sp_hexadecimal
DROP PROCEDURE sp_help_revlogin
- Restore database in destination database
- Fix Orphan users:
a) SP_CHANGE_USERS_LOGIN REPORT – TO Find the orphan users
b) Script to map the orphaned users in one step
create table #login(loginname varchar(25),usersid varbinary(500))
insert into #login exec sp_change_users_login'report'
Declare GetResultSet cursor FAST_FORWARD For
Select distinct loginname from #login
Declare @login as Varchar(50)
declare @sEXEC as nvarchar (800)
declare @blkid as nvarchar (50)
declare @sEXEC1 as nvarchar (50)
declare @sEXEC2 as nvarchar (50)
Open GetResultSet
Fetch from GetResultSet into @login
While @@Fetch_Status=0
Begin
SET @sEXEC = 'sp_change_users_login '+''''+'update_one'+''''+','+''''+@login+''''+','+''''+@login+''''
print 'Trying to map the login .....'+ @login
EXEC sp_executesql @sEXEC
Fetch Next From GetResultSet into @login
End
Close GetResultSet
DeAllocate GetResultSet
drop table #login
- Run the result script in Destination server from above Step
- Verify the Database permissions and user permissions