Rank: Newbie
Medals: Groups: Registered, Administrators
Joined: 11/5/2013 Posts: 2 Points: 9 Location: Georgia
Thanks: 0 times Was thanked: 0 time(s) in 0 post(s)
|
Activity monitor, Script to find Head blocker- SQL Server 2005, 2008 and laterBB კოდი:SELECT [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''), [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] = ISNULL(g.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)--TAKE THIS dmv OUT TO WORK IN 2005 LEFT OUTER JOIN sys.sysprocesses p ON (s.session_id = p.spid) ORDER BY s.session_id;
|