问

捕获SQL Server扩展会话中传递的参数值？

mobiledu2502912907 发布于 2023-01-15 10:53

sql

我已经设置了SQL Server扩展事件,以将特定数据库中的最后1000个失败查询捕获到环形缓冲区中:

Create Event Session [Errors] on Server
Add Event sqlserver.error_reported (
    Action(
        sqlos.task_time,
        sqlserver.sql_text
    )
    Where sqlserver.database_name=N'MyDatabase'
    And error_number<>5701 -- Ignore changed db context messages
)
Add target package0.ring_buffer(Set max_memory=102400)
With (
    MAX_MEMORY=4096 KB,
    EVENT_RETENTION_MODE=ALLOW_SINGLE_EVENT_LOSS,
    MAX_DISPATCH_LATENCY=30 SECONDS,
    MAX_EVENT_SIZE=0 KB,
    MEMORY_PARTITION_MODE=NONE,
    TRACK_CAUSALITY=OFF,
    STARTUP_STATE=ON
)
Go



我现在可以像这样查询这些错误: 

Select 
    xmldata = Cast(xet.target_data as xml) 
Into #rbd
From sys.dm_xe_session_targets xet 
Join sys.dm_xe_sessions xe ON (xe.address = xet.event_session_address)
Where xe.name='errors' and target_name='ring_buffer'

; With Errors as (
    Select 
        e.query('.').value('(/event/@timestamp)[1]', 'datetime') as "TimeStamp",
        e.query('.').value('(/event/data[@name="message"]/value)[1]', 'nvarchar(max)') as "Message",
        e.query('.').value('(/event/action[@name="sql_text"]/value)[1]', 'nvarchar(max)') as "SqlText",
        e.query('.').value('(/event/action[@name="task_time"]/value)[1]', 'bigint')/@@TIMETICKS  as "Duration"
    From #rbd
    Cross Apply XMLData.nodes('/RingBufferTarget/event') as Event(e)
)
Select * from Errors
Where SqlText is not null

Drop Table #rbd


到现在为止还挺好:



这对于跟踪应用程序级别引发的错误的更多细节已经有很大帮助.

但是,如果我们能够在SQL事件探查器中看到参数值传递给这些查询,那将会更有用.所以当我们看到这样的错误时......

Conversion failed when converting date and/or time from character string.   


对于这个SQL ... 

(@NewValue nvarchar(10),@KeyValue int)
Update SomeTable 
Set SomeField=@NewValue Where SomeTableID=@KeyValue


...知道参数@NewValue和@KeyValue参数的值是有用的.

我可以找到这些信息的任何想法？



    
    
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