Sql Server 2012 读取事务日志

Question

我有一个使用 sql 服务器数据库的应用程序。我的 table 中的一列已修改，不知何故我在应用程序日志中看不到任何内容。数据库中没有审计日志操作。是否有可能找出此更新操作何时执行？我可以从事务日志中获取此信息吗？

Answer 1

One of the columns in my table has modified and somehow I can't see anything in the application logs.

有no Documented way读取事务日志文件。但是您可以使用未记录的命令 fn_dblog 来读取事务日志文件。它也不能保证为您提供所有信息，如果保存事务信息的日志已提交并重新使用，fn_dblog 将无法为您提供任何信息。

您可以通过 How to read and interpret SQL Server Logs

的帮助阅读事务日志的输出并理解其含义

您可以使用一些第三方工具来读取事务日志。

其他帮助是默认跟踪。请注意，默认跟踪文件在超过一定大小后会被覆盖，因此如果几天前发生事件，信息可能已被覆盖。请使用以下查询，看看是否有帮助 Source

SELECT  TE.name ,

        v.subclass_name ,

        DB_NAME(t.DatabaseId) AS DBName ,

        T.NTDomainName ,

        t.NTUserName ,

        t.HostName ,

        t.ApplicationName ,

        t.LoginName ,

        t.Duration ,

        t.StartTime ,

        t.ObjectName ,

        CASE t.ObjectType

          WHEN 8259 THEN 'Check Constraint'

          WHEN 8260 THEN 'Default (constraint or standalone)'

          WHEN 8262 THEN 'Foreign-key Constraint'

          WHEN 8272 THEN 'Stored Procedure'

          WHEN 8274 THEN 'Rule'

          WHEN 8275 THEN 'System Table'

          WHEN 8276 THEN 'Trigger on Server'

          WHEN 8277 THEN '(User-defined) Table'

          WHEN 8278 THEN 'View'

          WHEN 8280 THEN 'Extended Stored Procedure'

          WHEN 16724 THEN 'CLR Trigger'

          WHEN 16964 THEN 'Database'

          WHEN 16975 THEN 'Object'

          WHEN 17222 THEN 'FullText Catalog'

          WHEN 17232 THEN 'CLR Stored Procedure'

          WHEN 17235 THEN 'Schema'

          WHEN 17475 THEN 'Credential'

          WHEN 17491 THEN 'DDL Event'

          WHEN 17741 THEN 'Management Event'

          WHEN 17747 THEN 'Security Event'

          WHEN 17749 THEN 'User Event'

          WHEN 17985 THEN 'CLR Aggregate Function'

          WHEN 17993 THEN 'Inline Table-valued SQL Function'

          WHEN 18000 THEN 'Partition Function'

          WHEN 18002 THEN 'Replication Filter Procedure'

          WHEN 18004 THEN 'Table-valued SQL Function'

          WHEN 18259 THEN 'Server Role'

          WHEN 18263 THEN 'Microsoft Windows Group'

          WHEN 19265 THEN 'Asymmetric Key'

          WHEN 19277 THEN 'Master Key'

          WHEN 19280 THEN 'Primary Key'

          WHEN 19283 THEN 'ObfusKey'

          WHEN 19521 THEN 'Asymmetric Key Login'

          WHEN 19523 THEN 'Certificate Login'

          WHEN 19538 THEN 'Role'

          WHEN 19539 THEN 'SQL Login'

          WHEN 19543 THEN 'Windows Login'

          WHEN 20034 THEN 'Remote Service Binding'

          WHEN 20036 THEN 'Event Notification on Database'

          WHEN 20037 THEN 'Event Notification'

          WHEN 20038 THEN 'Scalar SQL Function'

          WHEN 20047 THEN 'Event Notification on Object'

          WHEN 20051 THEN 'Synonym'

          WHEN 20549 THEN 'End Point'

          WHEN 20801 THEN 'Adhoc Queries which may be cached'

          WHEN 20816 THEN 'Prepared Queries which may be cached'

          WHEN 20819 THEN 'Service Broker Service Queue'

          WHEN 20821 THEN 'Unique Constraint'

          WHEN 21057 THEN 'Application Role'

          WHEN 21059 THEN 'Certificate'

          WHEN 21075 THEN 'Server'

          WHEN 21076 THEN 'Transact-SQL Trigger'

          WHEN 21313 THEN 'Assembly'

          WHEN 21318 THEN 'CLR Scalar Function'

          WHEN 21321 THEN 'Inline scalar SQL Function'

          WHEN 21328 THEN 'Partition Scheme'

          WHEN 21333 THEN 'User'

          WHEN 21571 THEN 'Service Broker Service Contract'

          WHEN 21572 THEN 'Trigger on Database'

          WHEN 21574 THEN 'CLR Table-valued Function'

          WHEN 21577

          THEN 'Internal Table (For example, XML Node Table, Queue Table.)'

          WHEN 21581 THEN 'Service Broker Message Type'

          WHEN 21586 THEN 'Service Broker Route'

          WHEN 21587 THEN 'Statistics'

          WHEN 21825 THEN 'User'

          WHEN 21827 THEN 'User'

          WHEN 21831 THEN 'User'

          WHEN 21843 THEN 'User'

          WHEN 21847 THEN 'User'

          WHEN 22099 THEN 'Service Broker Service'

          WHEN 22601 THEN 'Index'

          WHEN 22604 THEN 'Certificate Login'

          WHEN 22611 THEN 'XMLSchema'

          WHEN 22868 THEN 'Type'

          ELSE 'Hmmm???'

        END AS ObjectType

FROM    [fn_trace_gettable](CONVERT(VARCHAR(150), ( SELECT TOP 1

                                                            value

                                                    FROM    [fn_trace_getinfo](NULL)

                                                    WHERE   [property] = 2

                                                  )), DEFAULT) T

        JOIN sys.trace_events TE ON T.EventClass = TE.trace_event_id

        JOIN sys.trace_subclass_values v ON v.trace_event_id = TE.trace_event_id

                                            AND v.subclass_value = t.EventSubClass

WHERE   TE.name IN ( 'Object:Created', 'Object:Deleted', 'Object:Altered' )

                -- filter statistics created by SQL server                                         

        AND t.ObjectType NOT IN ( 21587 )

                -- filter tempdb objects

        AND DatabaseID <> 2

                -- get only events in the past 24 hours

        AND StartTime > DATEADD(HH, -24, GETDATE())

ORDER BY t.StartTime DESC ;

Sql Server 2012 读取事务日志

Sql Server 2012 Read Transactional Log

logging

transactional

sql-server-2012