问题:数据库实际大小为600MB, 日志文档实际大小为33MB, 但日志文档占用空间为2.8GB!试了多种方式,SHIRNK DATABASE, TRUNCATE LOG FILE, 都没办法将文档缩小。无论如何,这应该算SQL Server的一个BUG吧。
解决方法:
后来找到下面的代码,就能够将日志文档缩小到自己想要的大小了。把代码COPY到查询分析器里,,然后修改其中的3个参数(数据库名,日志文档名,和目标日志文档的大小),运行即可。
----- SET NOCOUNT ON DECLARE @LogicalFileName sysname, @MaxMinutes INT, @NewSize INT
USE Marias -- 要操作的数据库名 SELECT @LogicalFileName = 'Marias_log' -- 日志文档名 @MaxMinutes = 10, -- Limit on time allowed to wrap log. @NewSize = 100 -- 您想设定的日志文档的大小(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 not expired 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
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