DBCC SHRINKFILE( @LogoFileName,@NewSize)
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DECLARE @LogicalFileName sysname,
@MaxMinutes INT,
@NewSize INT
USE WebRoot -- 要操作的数据库名
SELECT @LogicalFileName = 'WebRoot_log', -- 日志文件名
@MaxMinutes = 10, -- Limit on time allowed to wrap log.
@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 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
收缩指定数据库中的数据文件大小。语法
DBCC SHRINKDATABASE
( database_name [ , target_percent ]
[ , { NOTRUNCATE | TRUNCATEONLY } ]
)参数
database_name是要收缩的数据库名称。数据库名称必须符合标识符的规则。有关更多信息,请参见使用标识符。 target_percent是数据库收缩后的数据库文件中所要的剩余可用空间百分比。 NOTRUNCATE导致在数据库文件中保留所释放的文件空间。如果未指定,将所释放的文件空间释放给操作系统。 TRUNCATEONLY导致将数据文件中的任何未使用的空间释放给操作系统,并将文件收缩到上一次所分配的大小,从而减少文件大小,而不移动任何数据。不试图重新定位未分配页的行。使用 TRUNCATEONLY 时,忽略 target_percentis。
go
select permissions()
go
select ceiling((sum(size) * (8192.0/1024.0)) / 1024.0) from dbo.sysfiles
go
use [master]
go
select name, DATABASEPROPERTY(name, N'IsDetached'),(case when DATABASEPROPERTY(name, N'IsShutdown') is null then -1 else DATABASEPROPERTY(name,N'IsShutdown') end),DATABASEPROPERTY(name, N'IsSuspect'),DATABASEPROPERTY(name,N'IsOffline'),DATABASEPROPERTY(name, N'IsInLoad'),(case when ATABASEPROPERTY(name,N'IsInRecovery') is null then -1 else DATABASEPROPERTY(name,'IsInRecovery') end),(case when DATABASEPROPERTY(name,N'IsNotRecovered') is null then -1 else ATABASEPROPERTY(name, N'IsNotRecovered') end), DATABASEPROPERTY(name,N'IsEmergencyMode'), DATABASEPROPERTY(name, N'IsInStandBy'), has_dbaccess(name), status, category, status2 from master.dbo.sysdatabases
go
use [databasename]
go
exec sp_spaceused
go
DBCC SQLPERF(LOGSPACE)
go
use [master]
go
declare @currdate datetime declare @yy int declare @mm int declare @dd int declare @hh int declare @mi int declare @buf varchar(15) declare @buf2 varchar(15) declare @tok varchar(4) select @currdate=dateadd(mi,05,getdate()) select @yy=datepart(yy,@currdate) select @mm=datepart(mm,@currdate) select @dd=datepart(dd,@currdate) select @hh=datepart(hh,@currdate) select @mi=datepart(mi,@currdate) select @buf=convert(varchar(4),@yy) select @tok=convert(varchar(2),@mm) select @buf=@buf+replicate('0',2-datalength(@tok))+@tok select @tok=convert(varchar(2),@dd) select @buf=@buf+replicate('0',2-datalength(@tok))+@tok select @tok=convert(varchar(2),@hh) select @buf2=replicate('0',2-datalength(@tok))+@tok select @tok=convert(varchar(2),@mi) select @buf2=@buf2+replicate('0',2-datalength(@tok))+@tok+'00' select @buf, @buf2
go
set noexec off set parseonly off
go
exec msdb..sp_help_job
go
use [databasename]
go
SELECT groupid, groupname, FILEGROUPPROPERTY( f.groupname, N'IsReadOnly' ), FILEGROUPPROPERTY( f.groupname, N'IsPrimaryFG' ), FILEGROUPPROPERTY( f.groupname, N'IsDefault' ) FROM dbo.sysfilegroups f
go
SELECT o.fileid, o.name, o.filename, o.groupid, o.size, o.maxsize, o.growth, o.status FROM dbo.sysfiles o WHERE o.groupid = (SELECT u.groupid FROM dbo.sysfilegroups u WHERE u.groupname = N'PRIMARY') and (o.status & 0x40) = 0
go
SELECT o.fileid, o.name, o.filename, o.groupid, o.size, o.maxsize, o.growth, o.status FROM dbo.sysfiles o WHERE o.groupid = (SELECT u.groupid FROM dbo.sysfilegroups u WHERE u.groupname = N'PRIMARY') and (o.status & 0x40) = 0
go
dbcc showfilestats( 1 )
go
SELECT fileid, name, filename, size, growth, status, maxsize FROM dbo.sysfiles WHERE (status & 0x40) <> 0
go
SELECT fileid, name, filename, size, growth, status, maxsize FROM dbo.sysfiles WHERE (status & 0x40) <> 0
go
use [master]
go
dbcc sqlperf(LOGSPACE)
go
set noexec off set parseonly off
go
use [databasename] DBCC SHRINKFILE (N'databasename_Log')
go
set noexec off set parseonly off
go
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