查询 SQL Server 2008 中的扩展事件

Question

我使用从 Kimberly Tripp 的 SQL Server 2008 Internals 书中获得的脚本创建了以下事件会话。它已被修改为发送到文件而不是环形缓冲区。

CREATE EVENT SESSION
[statement_completed_file]
ON SERVER
ADD EVENT
    sqlserver.sp_statement_completed,
ADD EVENT
    sqlserver.sql_statement_completed
    (
        ACTION 
        (
            sqlserver.sql_text
        )
        WHERE
        (
            sqlserver.session_id=53
        )
    )
ADD TARGET package0.asynchronous_file_target
    (
        set filename=N'C:\MSSQL\TEMP\stats.xel', 
        metadatafile=N'C:\MSSQL\TEMP\stats.xem'
    )
WITH
(
    MAX_MEMORY=4096KB,
    EVENT_RETENTION_MODE=ALLOW_SINGLE_EVENT_LOSS,
    MAX_DISPATCH_LATENCY=1 SECONDS,
    TRACK_CAUSALITY=OFF,
    STARTUP_STATE=OFF
)

这是查询数据的原始脚本。

SELECT
theNodes.event_data.value('(data/value)[1]', 'bigint') AS source_database_id,
theNodes.event_data.value('(data/value)[2]', 'bigint') AS object_id,
theNodes.event_data.value('(data/value)[3]', 'bigint') AS object_type,
theNodes.event_data.value('(data/value)[4]', 'bigint') AS cpu,
theNodes.event_data.value('(data/value)[5]', 'bigint') AS duration,
theNodes.event_data.value('(data/value)[6]', 'bigint') AS reads,
theNodes.event_data.value('(data/value)[7]', 'bigint') AS writes,
theNodes.event_data.value('(action/value)[1]', 'nvarchar(max)') AS sql_text
FROM
(
    SELECT 
        CONVERT(XML, st.target_data) AS ring_buffer
        FROM sys.dm_xe_sessions s
        JOIN sys.dm_xe_session_targets st ON s.address = st.event_session_address
        WHERE s.name = 'statement_completed'
) AS theData
CROSS APPLY
theData.ring_buffer.nodes('//RingBufferTarget/event') theNodes (event_data)
WHERE theNodes.event_data.value('(action/value)[1]', 'nvarchar(max)') is not null

我如何修改它以从两个文件 xel 和 xem 而不是环形缓冲区中读取。我一直在谷歌搜索，但学习曲线很粗糙。预先感谢您的帮助。

Answer 1

尝试玩这个例子：

CREATE EVENT SESSION
[statement_completed_file]
ON SERVER
ADD EVENT
    sqlserver.sp_statement_completed,
ADD EVENT
    sqlserver.sql_statement_completed
    (
        ACTION 
        (
            sqlserver.sql_text
        )
        WHERE
        (
            sqlserver.session_id <> 53
        )
    )
ADD TARGET package0.asynchronous_file_target
    (
        set filename=N'C:\stats.xel', 
        metadatafile=N'C:\stats.xem'
    )
WITH
(
    MAX_MEMORY=4096KB,
    EVENT_RETENTION_MODE=ALLOW_SINGLE_EVENT_LOSS,
    MAX_DISPATCH_LATENCY=1 SECONDS,
    TRACK_CAUSALITY=OFF,
    STARTUP_STATE=OFF
)
GO
ALTER EVENT SESSION [statement_completed_file]
ON SERVER
STATE=START
GO
SELECT event_data, 
    event_data.value('(event/@name)[1]', 'varchar(50)') AS event_name,
    event_data.value('(event/data/value)[1]', 'bigint') AS source_database_id,
    event_data.value('(event/data/value)[2]', 'bigint') AS object_id,
    event_data.value('(event/data/value)[3]', 'bigint') AS object_type,
    event_data.value('(event/data/value)[4]', 'bigint') AS cpu,
    event_data.value('(event/data/value)[5]', 'bigint') AS duration,
    event_data.value('(event/data/value)[6]', 'bigint') AS reads,
    event_data.value('(event/data/value)[7]', 'bigint') AS writes,
    event_data.value('(event/action/value)[1]', 'nvarchar(max)') AS sql_text
FROM 
(
    SELECT CAST(event_data AS XML) AS event_data
    FROM sys.fn_xe_file_target_read_file('C:\stats*.xel', 'C:\stats*.xem', null, null)
) tbl
GO
DROP EVENT SESSION [statement_completed_file] ON SERVER
GO