如何查询SQL Server数据库还原所需的时间？

Question

我试着写一个查询,告诉我在SQL Server 2008上恢复(完整或日志)的时间.

我可以运行此查询以查明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有一个列backup_set_id将链接到msdb..backupset,但保留备份的开始和结束日期而不是还原.

知道在哪里查询恢复的开始和结束时间？

Answer 1

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.

以下查询假定以下内容:

1. 运行还原时,对于该DatabaseID和ClientProcessID,下一个EventSequence包含我们需要的TransactionID.
2. 然后我去找到事务的最大EventSequence
3. 最后,我选择包含的记录RESTORE DATABASE和与该记录关联的最大事务.

我相信有人可能会采取我已经完成的工作并对其进行改进,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,因为我使用的测试数据库之一是区分大小写的,并且它丢失了一些记录.我还注意到从磁盘恢复时DatabaseID为null,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 

Answer 2

让它成为一份工作.然后将其作为Job运行.然后查看查看作业历史记录.然后查看持续时间列.