I have a stored procedure called sp_radhe that I put on my servers and it has been helping me to "see" what is happening internally. here is the code of this stored procedure: USE [master] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO --DROP PROCEDURE dbo.sp_radhe GO CREATE PROCEDURE dbo.sp_radhe AS /* ======================================================================= Script : SP_RADHE Author : Marcelo Miorelli Date : 04 MAR 2013 Wednesday Desc : shows the current processes Usage : sp_radhe -- same as sp_who2 ======================================================================= History Date Action User Desc ----------------------------------------------------------------------- 27-oct-2014 changed Marcelo Miorelli commented out the line --and es.status = 'running' so the procedure returns any es.status ======================================================================= */ --====================================== -- describe primary blocks of processing --====================================== ------------------------------------------------ -- describe action of logical groups of commands ------------------------------------------------ -- describe individual actions within a command set BEGIN SET NOCOUNT ON SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED SELECT es.session_id AS session_id ,COALESCE(es.original_login_name, 'No Info') AS login_name ,COALESCE(es.host_name,'No Info') AS hostname ,COALESCE(es.last_request_end_time,es.last_request_start_time) AS last_batch ,es.status ,COALESCE(er.blocking_session_id,0) AS blocked_by ,COALESCE(er.wait_type,'MISCELLANEOUS') AS waittype ,COALESCE(er.wait_time,0) AS waittime ,COALESCE(er.last_wait_type,'MISCELLANEOUS') AS lastwaittype ,COALESCE(er.wait_resource,'') AS waitresource ,coalesce(db_name(er.database_id),'No Info') as dbid ,COALESCE(er.command,'AWAITING COMMAND') AS cmd ,sql_text=st.text ,transaction_isolation = CASE es.transaction_isolation_level WHEN 0 THEN 'Unspecified' WHEN 1 THEN 'Read Uncommitted' WHEN 2 THEN 'Read Committed' WHEN 3 THEN 'Repeatable' WHEN 4 THEN 'Serializable' WHEN 5 THEN 'Snapshot' END ,COALESCE(es.cpu_time,0) + COALESCE(er.cpu_time,0) AS cpu ,COALESCE(es.reads,0) + COALESCE(es.writes,0) + COALESCE(er.reads,0) + COALESCE(er.writes,0) AS physical_io ,COALESCE(er.open_transaction_count,-1) AS open_tran ,COALESCE(es.program_name,'') AS program_name ,es.login_time FROM sys.dm_exec_sessions es LEFT OUTER JOIN sys.dm_exec_connections ec ON es.session_id = ec.session_id LEFT OUTER JOIN sys.dm_exec_requests er ON es.session_id = er.session_id LEFT OUTER JOIN sys.server_principals sp ON es.security_id = sp.sid LEFT OUTER JOIN sys.dm_os_tasks ota ON es.session_id = ota.session_id LEFT OUTER JOIN sys.dm_os_threads oth ON ota.worker_address = oth.worker_address CROSS APPLY sys.dm_exec_sql_text(er.sql_handle) AS st where es.is_user_process = 1 and es.session_id @@spid --and es.status = 'running' GO exec sys.sp_MS_marksystemobject 'sp_radhe' GO However, when a process is being blocked by some other process that is not active, I am struggling to figure it out the T-SQL of the blocking code. For example: the session 92 you can see on the above picture is a select and the session 75 is an update that I left the transaction open. **session 92** SET TRANSACTION ISOLATION LEVEL SERIALIZABLE SELECT TOP 1000 [accountID] ,[accountCreateKeyID] ,[totalAccountCreditValueLocal] ,[accountCreateDate] ,[createdDate] ,[createdBy] ,[modifiedDate] ,[modifiedBy] FROM [TableBackups].[dbo].[_AO20150806_crm_build_account_DoNotDelete] WITH (HOLDLOCK) **session 75** BEGIN TRANSACTION T1 SELECT @@TRANCOUNT update [TableBackups].[dbo].[_AO20150806_crm_build_account_DoNotDelete] set [totalAccountCreditValueLocal] = 1000 where accountID = 1 How can I find the code of the blocking session, in this case, the session 75 when the session's status is 'sleeping'? **New version** this new version shows also the blocking session, however, I could not find out how to get the database name and other data from a sleeping session. SET NOCOUNT ON SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED SELECT es.session_id AS session_id ,COALESCE(es.original_login_name, 'No Info') AS login_name ,COALESCE(es.host_name,'No Info') AS hostname ,COALESCE(es.last_request_end_time,es.last_request_start_time) AS last_batch ,es.status ,COALESCE(er.blocking_session_id,0) AS blocked_by ,COALESCE(er.wait_type,'MISCELLANEOUS') AS waittype ,COALESCE(er.wait_time,0) AS waittime ,COALESCE(er.last_wait_type,'MISCELLANEOUS') AS lastwaittype ,COALESCE(er.wait_resource,'') AS waitresource ,coalesce(db_name(er.database_id),'No Info') as dbid ,COALESCE(er.command,'AWAITING COMMAND') AS cmd ,sql_text=st.text ,transaction_isolation = CASE es.transaction_isolation_level WHEN 0 THEN 'Unspecified' WHEN 1 THEN 'Read Uncommitted' WHEN 2 THEN 'Read Committed' WHEN 3 THEN 'Repeatable' WHEN 4 THEN 'Serializable' WHEN 5 THEN 'Snapshot' END ,COALESCE(es.cpu_time,0) + COALESCE(er.cpu_time,0) AS cpu ,COALESCE(es.reads,0) + COALESCE(es.writes,0) + COALESCE(er.reads,0) + COALESCE(er.writes,0) AS physical_io ,COALESCE(er.open_transaction_count,-1) AS open_tran ,COALESCE(es.program_name,'') AS program_name ,es.login_time FROM sys.dm_exec_sessions es LEFT OUTER JOIN sys.dm_exec_connections ec ON es.session_id = ec.session_id LEFT OUTER JOIN sys.dm_exec_requests er ON es.session_id = er.session_id LEFT OUTER JOIN sys.server_principals sp ON es.security_id = sp.sid LEFT OUTER JOIN sys.dm_os_tasks ota ON es.session_id = ota.session_id LEFT OUTER JOIN sys.dm_os_threads oth ON ota.worker_address = oth.worker_address CROSS APPLY sys.dm_exec_sql_text(er.sql_handle) AS st where es.is_user_process = 1 and es.session_id @@spid UNION SELECT es.session_id AS session_id ,COALESCE(es.original_login_name, 'No Info') AS login_name ,COALESCE(es.host_name,'No Info') AS hostname ,COALESCE(es.last_request_end_time,es.last_request_start_time) AS last_batch ,es.status ,COALESCE(er.blocking_session_id,0) AS blocked_by ,COALESCE(er.wait_type,'MISCELLANEOUS') AS waittype ,COALESCE(er.wait_time,0) AS waittime ,COALESCE(er.last_wait_type,'MISCELLANEOUS') AS lastwaittype ,COALESCE(er.wait_resource,'') AS waitresource ,coalesce(db_name(er.database_id),'No Info') as dbid ,COALESCE(er.command,'AWAITING COMMAND') AS cmd ,sql_text=st.text ,transaction_isolation = CASE es.transaction_isolation_level WHEN 0 THEN 'Unspecified' WHEN 1 THEN 'Read Uncommitted' WHEN 2 THEN 'Read Committed' WHEN 3 THEN 'Repeatable' WHEN 4 THEN 'Serializable' WHEN 5 THEN 'Snapshot' END ,COALESCE(es.cpu_time,0) + COALESCE(er.cpu_time,0) AS cpu ,COALESCE(es.reads,0) + COALESCE(es.writes,0) + COALESCE(er.reads,0) + COALESCE(er.writes,0) AS physical_io ,COALESCE(er.open_transaction_count,-1) AS open_tran ,COALESCE(es.program_name,'') AS program_name ,es.login_time FROM sys.dm_exec_sessions es INNER JOIN sys.dm_exec_requests ec2 ON es.session_id = ec2.blocking_session_id LEFT OUTER JOIN sys.dm_exec_connections ec ON es.session_id = ec.session_id LEFT OUTER JOIN sys.dm_exec_requests er ON es.session_id = er.session_id LEFT OUTER JOIN sys.server_principals sp ON es.security_id = sp.sid LEFT OUTER JOIN sys.dm_os_tasks ota ON es.session_id = ota.session_id LEFT OUTER JOIN sys.dm_os_threads oth ON ota.worker_address = oth.worker_address CROSS APPLY sys.dm_exec_sql_text(ec.most_recent_sql_handle) AS st where es.is_user_process = 1 and es.session_id @@spid

I'm looking after a SQL server having long open sessions. There is no open transaction, or actively running query (requests) for this session. 1. What is the reason why a session may remain open? Is it because a transaction is opened and not closed? 2. What are the ramifications of having such an open session?

There are procedures that run fine manually but not in a job , or fails when run from an application , or not work in SSIS SQL task Mine works in all sessions but one. this is the code I am running - it calls a stored procedure that gets the trigger definition(s) and save it in a temp table. works fine and it is part of my automation work. IF OBJECT_ID('tempdb.dbo.#Jagannatha_sp_getTriggerDef') IS NOT NULL DROP TABLE #Jagannatha_sp_getTriggerDef CREATE TABLE #Jagannatha_sp_getTriggerDef ( DB sysname not null, parent_name nvarchar(600) not null, object_id int not null, trigger_name sysname not null, is_disabled bit, i int not null, [trigger_definition] NVARCHAR(MAX) not null, primary key clustered (DB,trigger_name,i)) truncate table #Jagannatha_sp_getTriggerDef exec sp_getTriggerDef @dbname = 'APCore', @TableName = 'dbo.receivedLog', @Drop_ONly = 0, @Radhe = '#Jagannatha_sp_getTriggerDef' SELECT * FROM #Jagannatha_sp_getTriggerDef order by db,i I run it on a table that has no triggers - just to make it as simple as possible it comes out with the warning IF 'my_server\_DEVELOPMENT' @@ServerName THROW 50001, 'Wrong Server!!!',1 all good. but then on this particular session: and there is nothing different in this session, that I could spot so far. SELECT * FROM sys.dm_exec_sessions where login_name = 'my_company\my_user' and session_id = @@SPID the second one is where it fails. all others it works fine. what can I do to find out what is different? or even better, change the procedure so that it would work despite the difference?

From Microsoft's SQL Server documentation of sys.dm_exec_sessions client_interface_name Name of library/driver being used by the client to communicate with the server. datatype: nvarchar(32) client_version TDS protocol version of the interface that is used by the client to connect to the server. datatype: int From Microsoft's TDS (Tabular Data Stream) Protocol message and product behavior documentation TDSVersion The highest TDS version being used by the client. The client sends a standard LOGIN7 message to the server to discover the server's highest TDS version. datatype: binary Ben Gribaudo posted a partial value map and suggests that client_version is, in fact, not the actual TDS Version. Questions (1) What is the client_version value for? (2) If the client_version definition (above) is correct, then where is the official documented map of integer values to TDS description (either string or binary values)?