SQL恢復[正在還原]資料庫
-- 切換資料庫的狀態為：ONLINE。
RESTORE DATABASE [資料庫名稱]
WITH RECOVERY
GO
錯誤訊息：
ALTER DATABASE is not permitted while a database in in the Restoring state.
ALTER DATABASE statement failed. (Microsfot SQL, Error 5052).
RESTORE DATABASE [資料庫名稱]
WITH RECOVERY;
DECLARE @DBName VARCHAR(64) = 'CHIComp01'
DECLARE @ErrorLog AS TABLE([LogDate] CHAR(24), [ProcessInfo] VARCHAR(64), [TEXT] VARCHAR(MAX))
INSERT INTO @ErrorLog
EXEC sys.xp_readerrorlog 0, 1, 'Recovery of database', @DBName
SELECT TOP 5
[LogDate]
,SUBSTRING([TEXT], CHARINDEX(') is ', [TEXT]) + 4,CHARINDEX(' complete (', [TEXT]) - CHARINDEX(') is ', [TEXT]) - 4) AS PercentComplete
,CAST(SUBSTRING([TEXT], CHARINDEX('approximately', [TEXT]) + 13,CHARINDEX(' seconds remain', [TEXT]) - CHARINDEX('approximately', [TEXT]) - 13) AS FLOAT)/60.0 AS MinutesRemaining
,CAST(SUBSTRING([TEXT], CHARINDEX('approximately', [TEXT]) + 13,CHARINDEX(' seconds remain', [TEXT]) - CHARINDEX('approximately', [TEXT]) - 13) AS FLOAT)/60.0/60.0 AS HoursRemaining
,[TEXT]
FROM @ErrorLog ORDER BY [LogDate] DESC
在 SQL 2012 可以用以下的 SQL:
DECLARE @DBName VARCHAR(64) = 'databasename'
DECLARE @ErrorLog AS TABLE([LogDate] CHAR(24), [ProcessInfo] VARCHAR(64), [TEXT] VARCHAR(MAX))
INSERT INTO @ErrorLog
EXEC master..sp_readerrorlog 0, 1, 'Recovery of database', @DBName
SELECT TOP 5
[LogDate]
,SUBSTRING([TEXT], CHARINDEX(') is ', [TEXT]) + 4,CHARINDEX(' complete (', [TEXT]) - CHARINDEX(') is ', [TEXT]) - 4) AS PercentComplete
,CAST(SUBSTRING([TEXT], CHARINDEX('approximately', [TEXT]) + 13,CHARINDEX(' seconds remain', [TEXT]) - CHARINDEX('approximately', [TEXT]) - 13) AS FLOAT)/60.0 AS MinutesRemaining
,CAST(SUBSTRING([TEXT], CHARINDEX('approximately', [TEXT]) + 13,CHARINDEX(' seconds remain', [TEXT]) - CHARINDEX('approximately', [TEXT]) - 13) AS FLOAT)/60.0/60.0 AS HoursRemaining
,[TEXT]
FROM @ErrorLog ORDER BY [LogDate] DESC
結果如下:
資料來源:
http://timlaqua.com/2009/09/determining-how-long-a-database-will-be-in-recovery-sql-server-2008/
ALTER DATABASE MyDB SET EMERGENCY;
DBCC checkdb('MyDB');
ALTER DATABASE MyDB SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
DBCC CheckDB ('MyDB', REPAIR_ALLOW_DATA_LOSS);
ALTER DATABASE MyDB SET MULTI_USER;
其中 "DBCC CheckDB ('MyDB', REPAIR_ALLOW_DATA_LOSS)" 可能要多執行幾次。
2. Restore Differential Backup 用的 SQL:
RESTORE DATABASE [MyDB] FROM DISK = N'D:\BACKUP_DB\MyDB_backup.bak' WITH FILE = 1, NORECOVERY, NOUNLOAD, REPLACE, STATS = 10,
MOVE 'MyDB_Data' TO 'D:\SQLDB2008\MyDB.mdf',
MOVE 'MyDB_Log' TO 'D:\SQLDB2008\MyDB.ldf'
RESTORE DATABASE [MyDB] FROM DISK = N'D:\BACKUP_DIFF\MyDB_backup_2013_02_25_12.bak' WITH FILE = 1, NOUNLOAD, NORECOVERY, STATS = 10
RESTORE DATABASE [MyDB] WITH RECOVERY (正在還原的資料庫也可以用這個指令來恢復成可使用的狀態)
Reset Password: http://www.cisco.com/en/US/products/hw/switches/ps628/products_password_recovery09186a0080094184.shtml
當principal DB異常時，若無見證DB，可以手動執行下面指令，讓mirror DB可以正常運作
ALTER DATABASE [ReikoTEST] SET PARTNER OFF
RESTORE DATABASE [ReikoTEST] WITH RECOVERY
Principal(來源), Mirror(鏡像), Witness(見證，非必要，系統出現錯誤時，自動切換資料庫)
上方三個資料庫需使用相同版本
/*查資料庫版本號*/
SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel'),SERVERPROPERTY ('edition')
參考資料：
MS SQL Server 2008_容錯轉移_資料庫鏡像實作
Simple Step by Step Database Mirroring
SQL Server 2008 的執行個體之間傳送登入和密碼
Troubleshooting Database Mirroring Error 1418
Microsoft SQL 2008 SERVER -- Fix : Error: 1418 Mirroring
/*
DB: Principal
Step 1, 備份來源資料庫
*/
backup database reikoTest to disk='D:\MirrorTEST_Full.bak'
with format
go
backup log reikoTest to disk='D:\MirrorTEST_log.bak'
go
/*
DB: Mirror
Step 2, 建立mirror資料庫
*/
Create database ReikoTEST
go
restore database ReikoTEST from disk='D:\MirrorTEST_Full.bak'
with replace, norecovery
go
restore log ReikoTESt from disk='D:\MirrorTEST_log.bak'
with norecovery
go
/*
DB: Principal
Step 3, 建立SQL Server 2008 的執行個體之間傳送登入和密碼
注意 這個指令碼會在 master 資料庫中建立兩個預存程序。這兩個預存程序名為 sp_hexadecimal 預存程序和 sp_help_revlogin 預存程序。
※第一次建立mirror時(預存程序不存在時)，才需執行本指令
*/
SQL指令碼
/*
DB: Principal
Step 4, 查詢傳送登入帳號和密碼
sp_help_revlogin 預存程序所產生的輸出指令碼是登入指令碼。這個登入指令碼會建立具有原始「安全性識別碼」(SID) 和原始密碼的登入。
*/
EXEC sp_help_revlogin
/*
執行後，複製要使用的帳號，至mirror資料庫執行
ex.
-- Login:reiko
CREATE LOGIN [reiko] WITH PASSWORD = 0x010036D88E850F3F29E70120CB4CD2DEE7CBAD1AB83AA4A6A927 HASHED, SID = 0x495A943A23B12C48A43C39776B879A49, DEFAULT_DATABASE = [master], CHECK_POLICY = OFF, CHECK_EXPIRATION = OFF
*/
/*
DB: Mirror
Step 5, 建立傳送登入帳號和密碼
刪掉DEFAULT_DATABASE = [master],(上方紅字部份)
ex.
-- Login:reiko
CREATE LOGIN [reiko] WITH PASSWORD = 0x010036D88E850F3F29E70120CB4CD2DEE7CBAD1AB83AA4A6A927 HASHED, SID = 0x495A943A23B12C48A43C39776B879A49, CHECK_POLICY = OFF, CHECK_EXPIRATION = OFF
*/
-- Login:reiko
CREATE LOGIN [reiko] WITH PASSWORD = 0x010036D88E850F3F29E70120CB4CD2DEE7CBAD1AB83AA4A6A927 HASHED, SID = 0x495A943A23B12C48A43C39776B879A49, CHECK_POLICY = OFF, CHECK_EXPIRATION = OFF