SQL Server数据库日常检查

1.1代码检查从昨天到现在，SQL代理Job有没有运行失败的，会把运行失败的Job名字，步骤，运行时间，错误等级，错误原因罗列出来，方便查看。

----1.1  Check Job Fail List From Last Day To NowSELECT  j.[name],          h.step_id,          h.step_name,          h.run_date,          h.run_time,          h.sql_severity,          h.message,           h.server  FROM    msdb.dbo.sysjobhistory h          INNER JOIN msdb.dbo.sysjobs j              ON h.job_id = j.job_id          INNER JOIN msdb.dbo.sysjobsteps s              ON j.job_id = s.job_id                 AND h.step_id = s.step_id  WHERE    h.run_status = 0 -- Failure           AND h.run_date > CONVERT(int,CONVERT(varchar(10), DATEADD(DAY, -1, GETDATE()), 112))ORDER BY h.instance_id DESC;

1.2 检查两天内，运行时间超过30分钟的Job，并按执行时间长短排序，时间2天和运行时间30分钟，都是可以调整的，可以调整为自己需要的检查范围。代码会把执行Job的名称，运行时间，平均执行时间列出来。看是否有突然变化的运行情况。

----1.2  Check Jobs With Long Duration:30minutes(can modify to other value) From Last 2 Day To NowSELECT sj.name   , sja.start_execution_date,DATEDIFF (minute ,sja.start_execution_date,sja.stop_execution_date ) AS ExecutedMin,ja.AvgRuntimeOnSucceed/60 as AvgRuntimeOnSucceedMinFROM msdb.dbo.sysjobactivity AS sjaINNER JOIN msdb.dbo.sysjobs AS sj ON sja.job_id = sj.job_id INNERjoin(    SELECT job_id,    AVG    ((run_duration/10000 * 3600) + ((run_duration%10000)/100*60) + (run_duration%10000)%100)    +    NULLIF(0,STDEV    ((run_duration/10000 * 3600) + ((run_duration%10000)/100*60) + (run_duration%10000)%100)) AS 'AvgRuntimeOnSucceed'     FROM msdb.dbo.sysjobhistory    WHERE step_id = 0 AND run_status = 1    GROUP BY job_id) ja     ON sj.job_id = ja.job_idWHERE sja.start_execution_date IS NOT NULL --作业有开始   AND sja.stop_execution_date IS not NULL --作业结束   AND sja.start_execution_date>DATEADD(DAY,-2,GETDATE()) --作业2天内开始and DATEDIFF (minute ,sja.start_execution_date,sja.stop_execution_date )>30order by ExecutedMin desc

1.3 检查数据库错误日志，默认读取的是当前log，筛选的是Error开头的错误日志，可以根据需要筛选其他关键字。

----1.3  Check SQL Error LogDROP TABLE IF EXISTS #errorLog;  -- this is new syntax in SQL 2016 and later

CREATE TABLE #errorLog (LogDate DATETIME, ProcessInfo VARCHAR(64), [Text] VARCHAR(MAX));

INSERT INTO #errorLogEXEC sp_readerrorlog 

SELECT * FROM #errorLog aWHERE EXISTS (SELECT *               FROM #errorLog b              WHERE [Text] like 'Error:%'                AND a.LogDate = b.LogDate                AND a.ProcessInfo = b.ProcessInfo)

1.4 检查含有数据库文件的磁盘的空间大小，可以看到剩余百分比，实际大小，使用大小等。

----1.4  Check HDD Free Spaceselect distinct convert(varchar(512), b.volume_mount_point) as [volume_mount_point], convert(varchar(512), b.logical_volume_name) as [logical_volume_name], convert(decimal(18,1), round(((convert(float, b.available_bytes) / convert(float, b.total_bytes)) * 100),1)) as [Drive_Free_Percent], convert(bigint, round(((b.available_bytes / 1024.0)/1024.0),0)) as [Drive_Free_MB], convert(bigint, round(((b.total_bytes / 1024.0)/1024.0),0)) as [Drive_Total_MB], convert(bigint, round((((b.total_bytes - b.available_bytes) / 1024.0)/1024.0),0)) as [Drive_Used_MB]from sys.master_files as [a]CROSS APPLY sys.dm_os_volume_stats(a.database_id, a.[file_id]) as [b]order by volume_mount_point

1.5 检查数据库数据文件和日志文件的大小，默认排除了id为4以下的系统数据库，可以根据需要调整，只观察自己需要的数据库。

----1.5  Check DB Data And Log Sizeselect distinct db_name(a.database_id) as [DatabaseName],database_id, a.name as [Logical_Name], convert(decimal(28,2), round(((a.size * 8.0) / 1024.00),2)) as [SizeMB] from sys.master_files as [a]where database_id>4order by  DatabaseName,Logical_Name