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- SELECT
- [Net Address] = ISNULL(c.client_net_address, N'') ,
- [SESSION ID] = s.session_id,
- [USER Process] = CONVERT(CHAR(1), s.is_user_process),
- [Login] = s.login_name,
- [DATABASE] = ISNULL(db_name(p.dbid), 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 or session is idle but has an open tran and is blocking others
- WHEN r2.session_id IS NOT NULL AND (r.blocking_session_id = 0 OR r.session_id IS NULL) THEN '1'
- -- session is either not blocking someone, or is blocking someone but is blocked by another party
- 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'')
- 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 (s.session_id = r2.blocking_session_id)
- --LEFT OUTER JOIN sys.dm_resource_governor_workload_groups g ON (g.group_id = s.group_id)
- LEFT OUTER JOIN sys.sysprocesses p ON (s.session_id = p.spid)
- WHERE s.session_id=285
- ORDER BY s.login_name;
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