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這篇文章主要介紹如何實(shí)現(xiàn) alwayson 的備份還原腳本，文中介紹的非常詳細(xì)，具有一定的參考價(jià)值，感興趣的小伙伴們一定要看完！
1、備份數(shù)據(jù)庫
在主副本上，將需要做 AlwaysOn 的數(shù)據(jù)庫做一次全備和日志備份（NOTE：禁用事務(wù)日志備份作業(yè)，如果有的話）
替換參數(shù)，執(zhí)行如下腳本生成備份語句，然后執(zhí)行：
DECLARE @DBName
NVARCHAR(255)
DECLARE @SQL
NVARCHAR(MAX)
DECLARE @BackupToPath
NVARCHAR(500)
SET @DBName= datayesdb – 數(shù)據(jù)庫名稱
SET @BackupToPath= D: – 數(shù)據(jù)庫備份在主副本的存放路徑
SET NOCOUNT
ON
PRINT — =============================================
PRINT —
AlwaysOn 主副本上備份數(shù)據(jù)庫 (完整備份 + 事務(wù)日志備份) +CHAR(13)
SET
@SQL= USE [master]
GO
ALTER DATABASE [+@DBName+] SET RECOVERY FULL;
GO
BACKUP DATABASE [+@DBName+]
TO DISK= +@BackupToPath+ \ +@DBName+ .bak WITH
COMPRESSION
GO
BACKUP LOG [+@DBName+]
TO DISK= +@BackupToPath+ \ +@DBName+ .trn WITH
COMPRESSION
GO +CHAR(13)
PRINT @SQL
2、還原數(shù)據(jù)庫
將備份文件復(fù)制到輔助副本服務(wù)器，使用 NORECOVERY 方式還原。
替換參數(shù)，執(zhí)行如下腳本生成備份語句，然后執(zhí)行：
DECLARE @DBName
NVARCHAR(255)
DECLARE @SQL
NVARCHAR(MAX)
DECLARE @RestoreFromPath
NVARCHAR(MAX)
DECLARE @RestoreToDataFileFolder
NVARCHAR(200)
DECLARE @RestoreToLogFileFolder
NVARCHAR(200)
SET @DBName= datayesdb – 數(shù)據(jù)庫名稱
SET @RestoreFromPath= D:\share – 數(shù)據(jù)庫備份在輔助副本的存放路徑
SET @RestoreToDataFileFolder= D:\SQLData – 數(shù)據(jù)庫備份的數(shù)據(jù)文件在輔助副本的還原路徑
SET @RestoreToLogFileFolder= D:\SQLLog – 數(shù)據(jù)庫備份的日志文件在輔助副本的還原路徑
SET NOCOUNT
ON
PRINT —
=============================================
PRINT —
AlwayOn 輔助副本還原數(shù)據(jù)庫 (指定 NORECOVERY 方式還原) +CHAR(13)
DECLARE @RestoreFilePath
NVARCHAR(MAX)
DECLARE @LNAME
NVARCHAR(500)
DECLARE @PNAME
NVARCHAR(500)
DECLARE @PFName
NVARCHAR(500)
DECLARE @BackupType
CHAR(1)
SET @RestoreFilePath=
SET @SQL
= RESTORE FILELISTONLY
FROM DISK = +@RestoreFromPath+ \ +@DBName+ .bak +
if OBJECT_ID (tempdb..#temp)is not null
BEGIN
DROP
TABLE #BackupFileList
END
CREATE TABLE
#BackupFileList
(
LogicalName
NVARCHAR(128) ,
PhysicalName
NVARCHAR(260) ,
BackupType
CHAR(1) ,
FileGroupName
NVARCHAR(128) ,
SIZE
NUMERIC(20,0),
MaxSize
NUMERIC(20,0) ,
FileID
BIGINT ,
CreateLSN
NUMERIC(25,0) ,
DropLSN
NUMERIC(25,0) NULL ,
UniqueID
UNIQUEIDENTIFIER ,
ReadOnlyLSN
NUMERIC(25,0) NULL ,
ReadWriteLSN
NUMERIC(25,0) NULL ,
BackupSizeInBytes
BIGINT ,
SourceBlockSize
INT ,
FileGroupID
INT ,
LogGroupGUID
UNIQUEIDENTIFIER NULL
,
DifferentialBaseLSN
NUMERIC(25,0) NULL ,
DifferentialBaseGUID
UNIQUEIDENTIFIER ,
IsReadOnly
BIT ,
IsPresent
BIT ,
TDEThumbprint
NVARCHAR(100)
)
INSERT INTO
#BackupFileList EXEC (@SQL);
DECLARE CurTBName
CURSOR
FOR
SELECT
LogicalName,PhysicalName,BackupType FROM #BackupFileList
OPEN CurTBName
FETCH NEXT
FROM CurTBName INTO @LNAME,@PNAME,@BackupType
WHILE @@FETCH_STATUS
= 0
BEGIN
SELECT
@PFName=RIGHT(@PNAME, CHARINDEX( \ ,REVERSE(@PNAME))-1)
SET @RestoreFilePath= MOVE N +@LNAME+ TO N
+CASE WHEN @BackupType= D THEN @RestoreToDataFileFolder ELSE
@RestoreToLogFileFolder END
+ \ +@PFName+ , +CHAR(13)+@RestoreFilePath
FETCH
NEXT FROM CurTBName INTO @LNAME,@PNAME,@BackupType
END
CLOSE CurTBName
DEALLOCATE CurTBName
SET
@SQL= USE [master]
GO
RESTORE DATABASE +@DBName+ FROM DISK = N +@RestoreFromPath+ \ +@DBName+ .bak WITH FILE =
1, +CHAR(13)
+@RestoreFilePath
+ NORECOVERY,NOUNLOAD,STATS
= 10
GO
RESTORE LOG +@DBName+ FROM DISK = N +@RestoreFromPath+ \ +@DBName+ .trn WITH
NORECOVERY
GO +CHAR(13)
PRINT @SQL
DROP TABLE
#BackupFileList
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