7

我正在尝试编写一个查询,该查询将告诉我在 SQL Server 2008 上恢复(完整或日志)花费了多少时间。

我可以运行此查询来了解备份花费了多少时间:

select  database_name, 
        [uncompressed_size] = backup_size/1024/1024,
        [compressed_size] = compressed_backup_size/1024/1024, 
        backup_start_date, 
        backup_finish_date, 
        datediff(s,backup_start_date,backup_finish_date) as [TimeTaken(s)], 
from    msdb..backupset b 
where   type = 'L' -- for log backups
order by b.backup_start_date desc

此查询将告诉我恢复了什么,但现在花了多少时间:

select * from msdb..restorehistory

restorehistory有一列backup_set_id将链接到msdb..backupset,但它保存备份而不是恢复的开始和结束日期。

知道在哪里查询恢复的开始和结束时间吗?

4

3 回答 3

12

要查找 RESTORE DATABASE 时间,我发现您可以使用此查询:

declare @filepath nvarchar(1000) 

SELECT @filepath = cast(value as nvarchar(1000)) FROM [fn_trace_getinfo](NULL) 
WHERE [property] = 2 and traceid=1 

SELECT *
FROM [fn_trace_gettable](@filepath, DEFAULT) 
WHERE TextData LIKE 'RESTORE DATABASE%' 
ORDER BY StartTime DESC; 

缺点是,您会注意到,至少在我的测试服务器上,EndTime始终为 NULL。

所以,我想出了第二个查询来尝试确定结束时间。首先,我很抱歉这很丑陋并且像疯了一样嵌套。

下面的查询假设如下:

  1. 当运行恢复时,对于那个 DatabaseID 和 ClientProcessID,下一个 EventSequence 包含我们需要的 TransactionID。
  2. 然后我去寻找事务的最大 EventSequence
  3. 最后,我选择包含该记录的记录RESTORE DATABASE以及与该记录关联的最大事务。

我相信有人可能会接受我所做的并对其进行改进,但这似乎适用于我的测试环境:

declare @filepath nvarchar(1000) 

SELECT @filepath = cast(value as nvarchar(1000)) FROM [fn_trace_getinfo](NULL) 
WHERE [property] = 2 and traceid=1 

SELECT *
FROM [fn_trace_gettable](@filepath, DEFAULT) F5
INNER JOIN 
(
    SELECT F4.EventSequence MainSequence, 
         MAX(F3.EventSequence) MaxEventSequence, F3.TransactionID
    FROM [fn_trace_gettable](@filepath, DEFAULT) F3
    INNER JOIN 
    (
        SELECT F2.EventSequence, MIN(TransactionID) as TransactionID
        FROM [fn_trace_gettable](@filepath, DEFAULT) F1
        INNER JOIN 
        (
            SELECT DatabaseID, SPID, StartTime, ClientProcessID, EventSequence
            FROM [fn_trace_gettable](@filepath, DEFAULT)
            WHERE TextData LIKE 'RESTORE DATABASE%' 
        ) F2 ON F1.DatabaseID = F2.DatabaseID AND F1.SPID = F2.SPID 
                       AND F1.ClientProcessID = F2.ClientProcessID 
                       AND F1.StartTime > F2.StartTime
        GROUP BY F2.EventSequence
    ) F4 ON F3.TransactionID = F4.TransactionID 
    GROUP BY F3.TransactionID, F4.EventSequence
) F6 ON F5.EventSequence = F6.MainSequence 
    OR F5.EventSequence = F6.MaxEventSequence
ORDER BY F5.StartTime

编辑

我对查询进行了一些更改,因为我使用的一个测试数据库区分大小写并且丢失了一些记录。我还注意到从磁盘恢复时它DatabaseID是空的,所以我现在也在处理它:

SELECT * 
FROM [fn_trace_gettable](@filepath, DEFAULT) F5 
INNER JOIN  
( 
    SELECT F4.EventSequence MainSequence,  
         MAX(F3.EventSequence) MaxEventSequence, F3.TransactionID 
    FROM [fn_trace_gettable](@filepath, DEFAULT) F3 
    INNER JOIN  
    ( 
        SELECT F2.EventSequence, MIN(TransactionID) as TransactionID 
        FROM [fn_trace_gettable](@filepath, DEFAULT) F1 
        INNER JOIN  
        ( 
            SELECT DatabaseID, SPID, StartTime, ClientProcessID, EventSequence 
            FROM [fn_trace_gettable](@filepath, DEFAULT) 
            WHERE upper(convert(nvarchar(max), TextData)) 
                LIKE 'RESTORE DATABASE%'  
        ) F2 ON (F1.DatabaseID = F2.DatabaseID OR F2.DatabaseID IS NULL) 
                   AND F1.SPID = F2.SPID  
                   AND F1.ClientProcessID = F2.ClientProcessID  
                   AND F1.StartTime > F2.StartTime 
        GROUP BY F2.EventSequence 
    ) F4 ON F3.TransactionID = F4.TransactionID  
    GROUP BY F3.TransactionID, F4.EventSequence 
) F6 ON F5.EventSequence = F6.MainSequence  
    OR F5.EventSequence = F6.MaxEventSequence 
ORDER BY F5.StartTime 
于 2010-09-30T14:15:58.013 回答
5

让它成为一份工作。然后将其作为作业运行。然后检查查看作业历史。然后查看持续时间列。

于 2010-09-24T20:02:08.563 回答
4

在它运行时,您可以检查类似 dmv 的内容。

select 
d.name
,percent_complete
,dateadd(second,estimated_completion_time/1000, getdate())
, Getdate() as now
,datediff(minute, start_time
, getdate()) as running
, estimated_completion_time/1000/60 as togo
,start_time
, command 
from sys.dm_exec_requests req
inner join sys.sysdatabases d on d.dbid = req.database_id
where 
req.command LIKE '%RESTORE%'

或者您可以使用一些魔法巫毒术并在下表函数中解释事务日志,但是我认识的唯一了解此日志中任何信息的人是 Paul Randal。我知道他有时会检查服务器故障,但不知道他是否想知道 StackOverflow。

选择 * 从 fn_dblog(NULL,NULL)

希望这可以帮助。如果您设法使用它并找到解决方案,请告诉我们。

祝你好运!

于 2010-10-05T15:41:42.423 回答