Todo mundo merece uma segunda chance,, ou para fazer melhor, ou para simplesmente não fazer,,, então,,, até no SQL temos uma segunda chance…
Dessa vez o Sr. David Howard (Blog | Twitter) deu a oportunidade de escrevermos novamente sobre algum tópico anterior do T-SQL Tuesday, ou para melhora-lo ou para fazer um se você não participou…
Eu resolvi melhorar o meu script para montar um Mirror com SQLCMD,,, na versão anterior (#25) se o banco de dados tiver mais que um datafile você tem que modificar o script na mão e compensar a criação desse outro arquivo… Nesta versão o script vai ler o arquivo de backup em uma temp table e montar o script de restore com todas as variáveis…
Vale lembrar que você precisa habilitar a opção de SQLCMD no SSMS e não esqueça de trocar o caminho do backup…
Everyone deserves a second chance, or to do better or to simply not do, then, even in SQL havea second chance…
This time Mr. David Howard (blog | twitter) gave us the opportunity to write again about a previous topic of Tuesday’s T-SQL, or to improve it or make one if you did not participate …
I decided to improve my script to create a Mirror with SQLCMD, in the previous version (#25) if the database has more than one datafile you have to modify the script and make the creation of another file … this version will read backup file in a temp table and mount the restore script with all the variables …
Remember that you need to enable the option of SQLCMD in SSMS and do not forget to change the backup path …
:SETVAR PrincipalServer (local)\INST01
:SETVAR MirrorServer (local)\INST02
:SETVAR SERVER (servername)
:SETVAR db DB_NAME
go
:ON ERROR EXIT
go
:CONNECT $(PrincipalServer)
ALTER DATABASE $(db)
SET RECOVERY FULL
go
CREATE ENDPOINT Mirroring
STATE=STARTED
AS TCP (LISTENER_PORT=5091)
FOR DATABASE_MIRRORING (ROLE=ALL)
GO
:CONNECT $(MirrorServer)
CREATE ENDPOINT Mirroring
STATE=STARTED
AS TCP (LISTENER_PORT=5092)
FOR DATABASE_MIRRORING (ROLE=ALL)
GO
:CONNECT $(PrincipalServer)
BACKUP DATABASE $(db)
TO DISK = 'D:\DB01\local\$(db).bak'
WITH INIT
GO
:CONNECT $(MirrorServer)
DECLARE @InstanceName sql_variant,
@InstanceDir sql_variant,
@SQLDataRoot nvarchar(512),
@ExecStr nvarchar(max)
SELECT @InstanceName = ISNULL(SERVERPROPERTY('InstanceName'), 'MSSQLServer')
EXECUTE master.dbo.xp_regread 'HKEY_LOCAL_MACHINE',
'SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL',
@InstanceName, @InstanceDir OUTPUT
SELECT @ExecStr = 'EXECUTE master.dbo.xp_regread '
+ '''HKEY_LOCAL_MACHINE'', '
+ '''SOFTWARE\Microsoft\Microsoft SQL Server\'
+ convert(varchar, @InstanceDir)
+ '\Setup'', ''SQLDataRoot'', @SQLDataRoot OUTPUT'
EXEC master.dbo.sp_executesql @ExecStr
, N'@SQLDataRoot nvarchar(512) OUTPUT'
, @SQLDataRoot OUTPUT
IF @SQLDataRoot IS NULL
BEGIN
RAISERROR ('I can´t find where restore the Database... I going to stop...', 16, -1)
END
CREATE TABLE #BackupFileList
( LogicalName sysname NULL
, PhysicalName sysname NULL
, [Type] char(1)
, FileGroupName sysname NULL
, Size bigint
, MaxSize bigint
, FileId smallint
, CreateLSN numeric(25,0)
, DropLSN numeric(25,0)
, UniqueId uniqueidentifier
, ReadOnlyLSN numeric(25,0)
, ReadWriteLSN numeric(25,0)
, BackupSizeInBytes bigint
, SourceBlockSize bigint
, FileGroupId smallint
, LogGroupGUID uniqueidentifier
, DifferentialBaseLSN numeric(25,0)
, DifferentialBaseGUID uniqueidentifier
, IsReadOnly bit
, IsPresent bit
, TDEThumbPrint varbinary(32)
)
INSERT #BackupFileList
EXEC('RESTORE FILELISTONLY FROM DISK = ''D:\DB01\local\$(db).bak''')
UPDATE #BackupFileList
SET PhysicalName
= @SQLDataRoot
+ N'\Data\'
+ REVERSE(SUBSTRING(REVERSE(PhysicalName)
, 1, PATINDEX('%\%', REVERSE(PhysicalName)) -1))
DECLARE @LogicalName sysname
, @PhysicalName sysname
DECLARE FileListCursor CURSOR FAST_FORWARD FOR
SELECT LogicalName, PhysicalName
FROM #BackupFileList
OPEN FileListCursor
FETCH NEXT FROM FileListCursor INTO @LogicalName, @PhysicalName
SELECT @ExecStr = N'RESTORE DATABASE $(db)' +
N' FROM DISK = ''D:\DB01\local\$(db).bak''' +
N' WITH MOVE ''' + @LogicalName + N''' TO ''' + @PhysicalName + N''''
FETCH NEXT FROM FileListCursor INTO @LogicalName, @PhysicalName
WHILE @@FETCH_STATUS <> -1
BEGIN
SELECT @ExecStr = @ExecStr + N', MOVE ''' + @LogicalName
+ ''' TO ''' + @PhysicalName + ''''
FETCH NEXT FROM FileListCursor INTO @LogicalName, @PhysicalName
END
SELECT @ExecStr = @ExecStr + N' , NORECOVERY, REPLACE'
-- if you receive the error message because the script don´t found where he need to restore, you can uncomment the next line and get the restore command,,,
-- to restore manual...
-- SELECT @ExecStr
EXEC (@ExecStr)
DEALLOCATE FileListCursor
GO
:CONNECT $(PrincipalServer)
SELECT DATABASEPROPERTYEX(N'$(db)', N'Status') AS 'Principal Database State' -- Returns ONLINE
SELECT db_name(sd.[database_id]) AS [Database Name],
sd.mirroring_guid,
sd.mirroring_state,
sd.mirroring_state_desc,
sd.mirroring_partner_name,
sd.mirroring_witness_name,
sd.mirroring_witness_state,
sd.mirroring_witness_state_desc,
sd.mirroring_role,
sd.mirroring_role_desc,
sd.mirroring_role_sequence,
sd.mirroring_safety_level,
sd.mirroring_safety_level_desc,
sd.mirroring_safety_sequence,
sd.mirroring_failover_lsn
FROM sys.database_mirroring AS sd
WHERE sd.[database_id] = db_id(N'$(db)')
go
:CONNECT $(MirrorServer)
SELECT DATABASEPROPERTYEX(N'$(db)', N'Status') AS 'Mirror Database State' -- Returns RESTORING
SELECT db_name(sd.[database_id]) AS [Database Name],
sd.mirroring_guid,
sd.mirroring_state,
sd.mirroring_state_desc,
sd.mirroring_partner_name,
sd.mirroring_witness_name,
sd.mirroring_witness_state,
sd.mirroring_witness_state_desc,
sd.mirroring_role,
sd.mirroring_role_desc,
sd.mirroring_role_sequence,
sd.mirroring_safety_level,
sd.mirroring_safety_level_desc,
sd.mirroring_safety_sequence,
sd.mirroring_failover_lsn
FROM sys.database_mirroring AS sd
WHERE sd.[database_id] = db_id(N'$(db)')
go
:CONNECT $(PrincipalServer)
BACKUP LOG $(db)
TO DISK = 'D:\DB01\local\$(db)_Log.bak'
WITH INIT
GO
:CONNECT $(MirrorServer)
RESTORE LOG $(db)
FROM DISK = 'D:\DB01\local\$(db)_Log.bak'
WITH NORECOVERY
GO
ALTER DATABASE $(db)
SET PARTNER = 'TCP://$(server):5091'
GO
:CONNECT $(PrincipalServer)
ALTER DATABASE $(db)
SET PARTNER = 'TCP://$(server):5092'
GO
SELECT db_name(sd.[database_id]) AS [Database Name],
sd.mirroring_guid,
sd.mirroring_state,
sd.mirroring_state_desc,
sd.mirroring_partner_name,
sd.mirroring_witness_name,
sd.mirroring_witness_state,
sd.mirroring_witness_state_desc,
sd.mirroring_role,
sd.mirroring_role_desc,
sd.mirroring_role_sequence,
sd.mirroring_safety_level,
sd.mirroring_safety_level_desc,
sd.mirroring_safety_sequence,
sd.mirroring_failover_lsn
FROM sys.database_mirroring AS sd
WHERE sd.[database_id] = db_id(N'$(db)')
GO
