如何检查数据库的增长

Question

我想知道如何检查整个数据库和单个数据文件的增长。

另外，如果数据库增长迅速，应该向客户提出什么建议？

Answer 1

您可以查询默认跟踪以获取有关最近增长事件的信息。

DECLARE @path nvarchar(260) = (
    SELECT REVERSE(SUBSTRING(REVERSE(path), CHARINDEX('\', REVERSE(path)), 260)) +'log.trc'
    FROM    sys.traces
    WHERE   is_default = 1)

SELECT gt.DatabaseID,
       gt.FileName,
       COUNT(*) AS NumberOfEvents,
       CASE WHEN te.name LIKE'%Grow' THEN 1 ELSE 0 END AS is_growth_event
FROM  sys.fn_trace_gettable(@path, DEFAULT) gt
JOIN sys.trace_events te ON gt.EventClass = te.trace_event_id
WHERE   te.name in ('Data File Auto Grow','Log File Auto Grow','Data File Auto Shrink','Log File Auto Shrink')
GROUP BY gt.DatabaseID,
       gt.FileName,
       te.name

您还可以使用事件通知来获得通知DATA_FILE_AUTO_GROW，LOG_FILE_AUTO_GROW而无需轮询跟踪。

Answer 2

这是你想要的？（更多信息请参见：http://msdn.microsoft.com/en-us/library/ms188233.aspx）：

SELECT 
name AS FileName, 
size*1.0/128 AS FileSizeinMB,
'MaximumSizeinMB' = 
    CASE max_size 
       WHEN 0 THEN 'No growth is allowed.'
       WHEN -1 THEN 'Autogrowth is on.'
       WHEN 268435456 
          THEN 'Log file will grow to a maximum size of 2 TB.'
       ELSE CAST (max_size*1.0/128 AS nvarchar(30))
    END,
growth AS 'GrowthValue',
'GrowthIncrement' = 
    CASE 
       WHEN growth = 0 THEN 'File size is fixed and will not grow.'
       WHEN growth > 0 AND is_percent_growth = 0 
          THEN 'Growth value is in units of 8-KB pages.'
       ELSE 'Growth value is a percentage.'
    END
FROM sys.database_files