SQL Activity mon query

gistfile1.txt

--from http://sqlblog.com/blogs/john_paul_cook/archive/2009/08/24/using-the-processes-query-outside-of-activity-monitor.aspx
/* ACTIVITY MONITOR */

 

/* Processes */

SELECT

   [Session ID]    = s.session_id,

   [User Process]  = CONVERT(CHAR(1), s.is_user_process),

   [Login]         = s.login_name,  

   [Database]      = ISNULL(db_name(r.database_id), N''),

   [Task State]    = ISNULL(t.task_state, N''),

   [Command]       = ISNULL(r.command, N''),

   [Application]   = ISNULL(s.program_name, N''),

   [Wait Time (ms)]     = ISNULL(w.wait_duration_ms, 0),

   [Wait Type]     = ISNULL(w.wait_type, N''),

   [Wait Resource] = ISNULL(w.resource_description, N''),

   [Blocked By]    = ISNULL(CONVERT (varchar, w.blocking_session_id), ''),

   [Head Blocker]  =

        CASE

            -- session has an active request, is blocked, but is blocking others

            WHEN r2.session_id IS NOT NULL AND r.blocking_session_id = 0 THEN '1'

            -- session is idle but has an open tran and is blocking others

            WHEN r.session_id IS NULL THEN '1'

            ELSE ''

        END,

   [Total CPU (ms)] = s.cpu_time,

   [Total Physical I/O (MB)]   = (s.reads + s.writes) * 8 / 1024,

   [Memory Use (KB)]  = s.memory_usage * 8192 / 1024,

   [Open Transactions] = ISNULL(r.open_transaction_count,0),

   [Login Time]    = s.login_time,

   [Last Request Start Time] = s.last_request_start_time,

   [Host Name]     = ISNULL(s.host_name, N''),

   [Net Address]   = ISNULL(c.client_net_address, N''),

   [Execution Context ID] = ISNULL(t.exec_context_id, 0),

   [Request ID] = ISNULL(r.request_id, 0),

   [Workload Group] = N''

FROM sys.dm_exec_sessions s LEFT OUTER JOIN sys.dm_exec_connections c ON (s.session_id = c.session_id)

LEFT OUTER JOIN sys.dm_exec_requests r ON (s.session_id = r.session_id)

LEFT OUTER JOIN sys.dm_os_tasks t ON (r.session_id = t.session_id AND r.request_id = t.request_id)

LEFT OUTER JOIN

(

    -- In some cases (e.g. parallel queries, also waiting for a worker), one thread can be flagged as

    -- waiting for several different threads.  This will cause that thread to show up in multiple rows

    -- in our grid, which we don't want.  Use ROW_NUMBER to select the longest wait for each thread,

    -- and use it as representative of the other wait relationships this thread is involved in.

    SELECT *, ROW_NUMBER() OVER (PARTITION BY waiting_task_address ORDER BY wait_duration_ms DESC) AS row_num

    FROM sys.dm_os_waiting_tasks

) w ON (t.task_address = w.waiting_task_address) AND w.row_num = 1

LEFT OUTER JOIN sys.dm_exec_requests r2 ON (r.session_id = r2.blocking_session_id)

ORDER BY s.session_id;