----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
posted on 2010-11-13 11:52
Victor.Stone 阅读(220)
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