数据库附加

Victor.Stone — Thu, 16 Dec 2010 00:37:00 GMT

CREATE DATABASE [abc] ON
( FILENAME = N'E:\db\abc.mdf' ),
( FILENAME = N'E:\db\abc_log.ldf' )
FOR ATTACH
GO
if not exists
(select name from master.sys.databases sd
where name = N'abc' and SUSER_SNAME(sd.owner_sid) = SUSER_SNAME() )
EXEC [abc].dbo.sp_changedbowner @loginame=N'sa', @map=false
GO

Victor.Stone 2010-12-16 08:37 发表评论

收缩SQL Server日志的大小

Victor.Stone — Sat, 13 Nov 2010 03:52:00 GMT

----收缩日志1：

backup log MYDB with NO_LOG
backup log MYDB with TRUNCATE_ONLY
DBCC SHRINKDATABASE(MYDB)

----收缩日志2：

SET NOCOUNT ONDECLARE @LogicalFileName sysname,@MaxMinutes INT,@NewSize INT

USE Marias -- 要操作的数据库名
SELECT @LogicalFileName = 'Marias_log',  -- 日志文件名
@MaxMinutes = 10,  -- Limit on time allowed to wraplog.
@NewSize = 100  -- 你想设定的日志文件的大小(M)

-- Setup / initialize

DECLARE @OriginalSize int
SELECT @OriginalSize = size FROM sysfiles WHERE name = @LogicalFileName
SELECT 'Original Size of ' + db_name() + ' LOG is ' + CONVERT(VARCHAR(30),@OriginalSize)
    + ' 8K pages or ' +CONVERT(VARCHAR(30),(@OriginalSize*8/1024)) + 'MB'
FROM sysfiles
WHERE name = @LogicalFileName

CREATE TABLE DummyTrans(DummyColumn char (8000) not null)

DECLARE @Counter INT,@StartTime DATETIME,@TruncLog VARCHAR(255)

SELECT @StartTime = GETDATE(),@TruncLog = 'BACKUP LOG ' + db_name() + ' WITH TRUNCATE_ONLY'

DBCC SHRINKFILE (@LogicalFileName, @NewSize)
EXEC (@TruncLog)
-- Wrap the log if necessary.

WHILE @MaxMinutes > DATEDIFF (mi, @StartTime, GETDATE()) -- time has notexpired
AND @OriginalSize = (SELECT size FROM sysfiles WHERE name =@LogicalFileName)
AND (@OriginalSize * 8 /1024) > @NewSize
BEGIN -- Outer loop.
    SELECT @Counter = 0
    WHILE ((@Counter < @OriginalSize / 16) AND (@Counter < 50000))
    BEGIN -- update
        INSERT DummyTrans VALUES ('Fill Log')
        DELETE DummyTrans
        SELECT @Counter = @Counter + 1
    END

    EXEC (@TruncLog)
END

SELECT 'Final Size of ' + db_name() + ' LOG is '
    + CONVERT(VARCHAR(30),size) + ' 8K pages or '
    + CONVERT(VARCHAR(30),(size*8/1024)) + 'MB'
FROM sysfiles
WHERE name = @LogicalFileName

DROP TABLE DummyTrans

SET NOCOUNT OFF

Victor.Stone 2010-11-13 11:52 发表评论

IT博客-Victor.Stone-随笔分类-DB

数据库附加

收缩SQL Server日志的大小