SQL Server: 如何查看数据和日志文件占用情况

1. 查看数据文件占用（权限要求较大）

DBCC showfilestats

2. 查看日志文件占用

dbcc sqlperf(logspace) 

3.  全面查看：

SELECT a.name [文件名称]
	,cast(a.[size]*1.0/128 as decimal(12,1)) AS [文件设置大小(MB)]
	,CAST( fileproperty(s.name,'SpaceUsed')/(8*16.0) AS DECIMAL(12,1)) AS [文件所占空间(MB)]
	,CAST( (fileproperty(s.name,'SpaceUsed')/(8*16.0))/(s.size/(8*16.0))*100.0  AS DECIMAL(12,1)) AS [所占空间率%]
	,CASE WHEN A.growth =0 THEN '文件大小固定，不会增长' ELSE '文件将自动增长' end [增长模式]
	,CASE WHEN A.growth > 0 AND is_percent_growth = 0 THEN '增量为固定大小'
		WHEN A.growth > 0 AND is_percent_growth = 1 THEN '增量将用整数百分比表示'
		ELSE '文件大小固定，不会增长' END AS [增量模式]
	,CASE WHEN A.growth > 0 AND is_percent_growth = 0 THEN cast(cast(a.growth*1.0/128as decimal(12,0)) AS VARCHAR)+'MB'
		WHEN A.growth > 0 AND is_percent_growth = 1 THEN cast(cast(a.growth AS decimal(12,0)) AS VARCHAR)+'%'
		ELSE '文件大小固定，不会增长' end AS [增长值(%或MB)]
	,a.physical_name AS [文件所在目录]
	,a.type_desc AS [文件类型]
FROM sys.database_files  a
INNER JOIN sys.sysfiles AS s ON a.[file_id]=s.fileid
LEFT JOIN sys.dm_db_file_space_usage b ON a.[file_id]=b.[file_id]
ORDER BY a.[type]