SQL Server: Failover and Failback in LogShipping

Database State & Jobs on Primary & Secondary Server

Database state on primary server (bhamare3)

Database state on secondary server (bhamare3\named)

Log Shipping jobs on Primary & Secondary Server

Log Shipping jobs on primary server (bhamare3)

Log Shipping job on secondary server (bhamare3\Named)

Check the log shipping is in sync by executing the following query on secondary server (bhamare\named)

select secondary_database,last_copied_file,last_restored_file from msdb..log_shipping_monitor_secondary

you can generate the log shipping sync report on secondary server (bhamare\Named) by

Right click on Instance Name > Reports > Standard Reports > Transaction Log Shipping Status

Backup Logins

If you simply want to make a backup of your SQL Sever Logins for disaster recovery purposes, just follow these easy steps:

On the primary server (bhamare3) launch SSMS & connect to the instance of SQL Server

USE master

IF OBJECT_ID ('sp_hexadecimal') IS NOT NULL

DROP PROCEDURE sp_hexadecimal

CREATE PROCEDURE sp_hexadecimal

@binvalue varbinary(256),

@hexvalue varchar (514) OUTPUT

DECLARE @charvalue varchar (514)

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

IF OBJECT_ID ('sp_help_revlogin') IS NOT NULL

DROP PROCEDURE sp_help_revlogin

CREATE PROCEDURE 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 1THEN '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

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

Note This script creates two stored procedures in the master database. The two stored procedures are named the sp_hexadecimal stored procedure and the sp_help_revlogin stored procedure.

Run the following statement
EXEC sp_help_revlogin
The output script that is generated by the sp_help_revlogin stored procedure is the login script. This login script creates the logins that have the original security identifier (SID) and the original password.

Failover

Before disabling log shipping jobs please copy any uncopied backup files from the shared folder on primary server to the shared destination folder on secondary server by using copy job.

Check all the transaction log has been successfully applied on the secondary server, if not please run the restore job to apply unapplied transaction log backups on secondary server.

Disable Log Shipping Jobs

Disable Log Shipping jobs on primary server (bhamare3)

Disable Log shipping jobs on secondary server (bhamare3\Named)

T-Log Backup

Kill the session open for the DB on which you have to take tail log backup.
Manually perform a tail log backup of the transaction log on the primary database specifying leave database in restoring state. This log backup captures any log records that have not been backed up yet and takes the database in Restoring state. The following example creates a tail log backup of the "AdventureWorks2008" database on the primary server.
We recommend that you use a distinct file naming convention to differentiate the manually created backup file from the backup files created by the log shipping backup job.