问题1:是的,可以这样做。您还需要定期进行事务日志备份。
问题2:是的,这也适用于恢复策略,同样需要进行事务日志备份。
问题3:由于您正在使用备份创建开发数据库,我建议您继续使用这种方法。虽然有一些选项,比如日志传送,但我不会将它们实施到从生产环境中更新开发数据库的过程中。
我编写了一些演示脚本,您可以使用它们在本地实例上运行所提出的场景。
这些脚本将会:
- 创建一个测试数据库,其中包含多个文件组,其中一些是只读文件组。
- 从测试数据库备份中创建开发数据库。
- 对测试数据库进行文件组备份,并将其还原到开发数据库中。
请查看并运行这些脚本。如果您有任何问题,请告诉我。
在使用这些脚本之前,请确保您的计算机上具有以下文件路径:
C:\SQLServer\Data
C:\SQLServer\Logs
C:\SQLServer\Backups
我使用的SQL Server版本是2012 SP2 CU2开发人员版。
首先创建测试数据库:
CREATE DATABASE [FGRestoreTEST]
ON PRIMARY
( NAME = N'FGRestoreTEST', FILENAME = N'C:\SQLServer\Data\FGRestoreTEST.mdf' , SIZE = 5120KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB ),
FILEGROUP [FG2010]
( NAME = N'FG2010', FILENAME = N'C:\SQLServer\Data\FG2010.ndf' , SIZE = 5120KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB ),
FILEGROUP [FG2011]
( NAME = N'FG2011', FILENAME = N'C:\SQLServer\Data\FG2011.ndf' , SIZE = 5120KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB ),
FILEGROUP [FG2012]
( NAME = N'FG2012', FILENAME = N'C:\SQLServer\Data\FG2012.ndf' , SIZE = 5120KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB ),
FILEGROUP [FG2013]
( NAME = N'FG2013', FILENAME = N'C:\SQLServer\Data\FG2013.ndf' , SIZE = 5120KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB ),
FILEGROUP [FG2014]
( NAME = N'FG2014', FILENAME = N'C:\SQLServer\Data\FG2014.ndf' , SIZE = 5120KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB )
LOG ON
( NAME = N'FGRestoreTEST_log', FILENAME = N'C:\SQLServer\Logs\FGRestoreTEST_log.ldf' , SIZE = 2048KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)
GO
然后在每个文件组中创建表:
USE [FGRestoreTEST];
GO
CREATE TABLE [PRIMARY_TABLE]
(ID INT,
NAME CHAR(4)) ON [PRIMARY];
CREATE TABLE [FG2010_TABLE]
(ID INT,
NAME CHAR(4)) ON [FG2010];
CREATE TABLE [FG2011_TABLE]
(ID INT,
NAME CHAR(4)) ON [FG2011];
CREATE TABLE [FG2012_TABLE]
(ID INT,
NAME CHAR(4)) ON [FG2012];
CREATE TABLE [FG2013_TABLE]
(ID INT,
NAME CHAR(4)) ON [FG2013];
CREATE TABLE [FG2014_TABLE]
(ID INT,
NAME CHAR(4)) ON [FG2014];
GO
将数据(100行)插入每个表中:
INSERT INTO [PRIMARY_TABLE]
SELECT 1, 'TEST'
GO 100
INSERT INTO [FG2010_TABLE]
SELECT 1, 'TEST'
GO 100
INSERT INTO [FG2011_TABLE]
SELECT 1, 'TEST'
GO 100
INSERT INTO [FG2012_TABLE]
SELECT 1, 'TEST'
GO 100
INSERT INTO [FG2013_TABLE]
SELECT 1, 'TEST'
GO 100
INSERT INTO [FG2014_TABLE]
SELECT 1, 'TEST'
GO 100
然后将特定的文件组设置为只读:
ALTER DATABASE [FGRestoreTEST]
MODIFY FILEGROUP [FG2010] READ_ONLY;
ALTER DATABASE [FGRestoreTEST]
MODIFY FILEGROUP [FG2011] READ_ONLY;
ALTER DATABASE [FGRestoreTEST]
MODIFY FILEGROUP [FG2012] READ_ONLY;
ALTER DATABASE [FGRestoreTEST]
MODIFY FILEGROUP [FG2013] READ_ONLY;
GO
进行完整备份:
USE [master];
GO
BACKUP DATABASE [FGRestoreTEST]
TO DISK = N'C:\SQLServer\Backups\FGRestoreTEST.BAK';
GO
然后从完整备份创建一个开发数据库(该数据库将用于还原接下来将进行的文件组备份):
RESTORE DATABASE [FGRestoreTEST_Dev]
FROM DISK = N'C:\SQLServer\Backups\FGRestoreTEST.BAK' WITH
MOVE 'FGRestoreTEST' TO 'C:\SQLServer\Data\FGRestoreTEST_Dev.mdf',
MOVE 'FG2010' TO 'C:\SQLServer\Data\FG2010_Dev.ndf',
MOVE 'FG2011' TO 'C:\SQLServer\Data\FG2011_Dev.ndf',
MOVE 'FG2012' TO 'C:\SQLServer\Data\FG2012_Dev.ndf',
MOVE 'FG2013' TO 'C:\SQLServer\Data\FG2013_Dev.ndf',
MOVE 'FG2014' TO 'C:\SQLServer\Data\FG2014_Dev.ndf',
MOVE 'FGRestoreTEST_log' TO 'C:\SQLServer\Logs\FGRestoreTEST_Dev_log.ldf',
RECOVERY,STATS=5;
GO
对每个文件组进行备份:
BACKUP DATABASE [FGRestoreTEST]
FILEGROUP = 'PRIMARY'
TO DISK = 'C:\SQLServer\Backups\FGRestoreTEST_PRIMARY.bak';
BACKUP DATABASE [FGRestoreTEST]
FILEGROUP = 'FG2010'
TO DISK = 'C:\SQLServer\Backups\FGRestoreTEST_FG2010.bak';
BACKUP DATABASE [FGRestoreTEST]
FILEGROUP = 'FG2011'
TO DISK = 'C:\SQLServer\Backups\FGRestoreTEST_FG2011.bak';
BACKUP DATABASE [FGRestoreTEST]
FILEGROUP = 'FG2012'
TO DISK = 'C:\SQLServer\Backups\FGRestoreTEST_FG2012.bak';
BACKUP DATABASE [FGRestoreTEST]
FILEGROUP = 'FG2013'
TO DISK = 'C:\SQLServer\Backups\FGRestoreTEST_G2013.bak';
BACKUP DATABASE [FGRestoreTEST]
FILEGROUP = 'FG2014'
TO DISK = 'C:\SQLServer\Backups\FGRestoreTEST_FG2014.bak';
GO
现在我们将修改Primary和FG2014文件组中的数据:
USE [FGRestoreTEST];
GO
INSERT INTO [PRIMARY_TABLE]
SELECT 1, 'TEST'
GO 100
TRUNCATE TABLE [FG2014_TABLE];
GO
对文件组进行差异备份:
BACKUP DATABASE [FGRestoreTest]
FILEGROUP = 'PRIMARY'
TO DISK = 'C:\SQLServer\Backups\FGRestoreTest_PRIMARYDIFF.bak'
WITH DIFFERENTIAL;
BACKUP DATABASE [FGRestoreTest]
FILEGROUP = 'FG2014'
TO DISK = 'C:\SQLServer\Backups\FGRestoreTest_FG2014DIFF.bak'
WITH DIFFERENTIAL;
GO
再次修改数据:
USE [FGRestoreTEST];
GO
INSERT INTO [PRIMARY_TABLE]
SELECT 1, 'TEST'
GO 100
INSERT INTO [FG2014_TABLE]
SELECT 1, 'NEW'
GO 300
备份事务日志(在实际环境中,您可能会有多个日志,但出于演示目的,我只取一个):
-
USE [master];
GO
BACKUP LOG [FGRestoreTEST]
TO DISK = 'C:\SQLServer\Backups\FGRestoreTest_LogBackup.trn';
GO
好的,现在我们可以恢复开发数据库了。首先,我们需要进行一次Tail Log备份,并将数据库置于恢复状态。注意:我们不会使用此备份!
BACKUP LOG [FGRestoreTEST_Dev]
TO DISK = 'C:\SQLServer\Backups\FGRestoreTest_TailLogBackup.trn'
WITH NORECOVERY;
GO
现在我们可以还原读写文件组的完整备份:
RESTORE DATABASE [FGRestoreTEST_Dev]
FILEGROUP = 'PRIMARY'
FROM DISK = 'C:\SQLServer\Backups\FGRestoreTEST_PRIMARY.bak'
WITH NORECOVERY;
GO
RESTORE DATABASE [FGRestoreTEST_Dev]
FILEGROUP = 'FG2014'
FROM DISK = 'C:\SQLServer\Backups\FGRestoreTEST_FG2014.bak'
WITH NORECOVERY;
GO
接下来是增量备份:
RESTORE DATABASE [FGRestoreTEST_Dev]
FILEGROUP = 'PRIMARY'
FROM DISK = 'C:\SQLServer\Backups\FGRestoreTest_PRIMARYDIFF.bak'
WITH NORECOVERY;
GO
RESTORE DATABASE [FGRestoreTEST_Dev]
FILEGROUP = 'FG2014'
FROM DISK = 'C:\SQLServer\Backups\FGRestoreTest_FG2014DIFF.bak'
WITH NORECOVERY;
GO
接下来是事务日志备份:
RESTORE LOG [FGRestoreTEST_Dev]
FROM DISK = 'C:\SQLServer\Backups\FGRestoreTest_LogBackup.trn'
WITH NORECOVERY;
GO
最后,数据库可以恢复:
RESTORE DATABASE [FGRestoreTest_DEV] WITH RECOVERY;
GO
最后一项测试,检查数据:
USE [FGRestoreTEST_Dev];
GO
SELECT COUNT(*) AS [PRIMARY_TABLE]
FROM [PRIMARY_TABLE];
SELECT COUNT(*) AS [FG2010_TABLE]
FROM [FG2010_TABLE];
SELECT COUNT(*) AS [FG2011_TABLE]
FROM [FG2011_TABLE];
SELECT COUNT(*) AS [FG2012_TABLE]
FROM [FG2012_TABLE];
SELECT COUNT(*) AS [FG2013_TABLE]
FROM [FG2013_TABLE];
SELECT COUNT(*) AS [FG2014_TABLE]
FROM [FG2014_TABLE];
SELECT TOP (1) *
FROM [FG2014_TABLE];
GO
因此,从所做的数据更改中,我们预计将在 PRIMARY和FG2014文件组中看到300个记录,在其余文件组中为100个记录,并且FG2014集合中所有名称列中的值均设置为“NEW”。