Getting my Current Session ID

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Getting my Current Session ID

AndrewJacksonZA

SSCarpal Tunnel

Points: 4143
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March 17, 2010 at 8:59 am

#217905

What command can I run to I get the session ID for my current connection to a database in TSQL? This is related to my previous question here about how to show current and past connections and connection information to a database.
Thank you

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GSquared SSC Guru Points: 260824 More actions · Answer 1

@@SPID

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Lowell SSC Guru Points: 323504 More actions · Answer 2

I didn't see your previous post, but are you looking for @@SPID?

select @@SPID will give you your current connection id, is that what you are looking for?

here's a collection of some of the functions you can use to get more information about your own login:

select @@spid,

user_name() AS [user_name],

suser_name() AS [suser_name],

current_user AS [current_user],

system_user AS [system_user],

session_user AS [session_user],

user AS

Lowell

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AndrewJacksonZA SSCarpal Tunnel Points: 4143 More actions · Answer 3

Thanks guys. Yes, @@SPID is what I was looking for.

When adding columns to a table via our admin app, I need to show the admin user that the users X, Y and Z are still connected. They need to be disconnected to ensure data integrity in those tables. Normally the admin user would have told the users to exit the system, but I don't want to rely entirely on that (users can be an interesting bunch after all 🙂 .) If the admin user okays it, the admin app will disconnect the users.

I was going to do it via a for loop in the app, merely KILLing all session ids that are not the current user's and that are connected to the target database. However, is there a better way? Over at bytes.com "Hugo Kornelis, SQL Server MVP" posted

ALTER DATABASE <dbname> SET SINGLE_USERorALTER DATABASE <dbname> SET SINGLE_USER WITH ROLLBACK_IMMEDIATE

but my SSMS gives me a syntax error when I execute WITH ROLLBACK_IMMEDIATE. Is there a better way that ensures that transactions get rolled back? Should I just KILL the other sessions one by one and let their transactions roll back one by one or can I get all the transactions to roll back in parallel?

Thanks

Paul White SSC Guru Points: 150467 More actions · Answer 4

GDI Lord (3/18/2010)
Users can be an interesting bunch after all

Amen.

I was going to do it via a for loop in the app, merely KILLing all session ids that are not the current user's and that are connected to the target database. However, is there a better way?

The correct syntax is:

-- Kick everyone out, rolling back

-- their transactions if necessary

ALTER DATABASE AdventureWorks

SET SINGLE_USER

WITH ROLLBACK IMMEDIATE;

--

-- Do admin stuff

--

-- Restore access to the database

ALTER DATABASE AdventureWorks

SET MULTI_USER;

Notice the lack of an underscore between ROLLBACK and IMMEDIATE 🙂

Paul

Paul White
SQLPerformance.com
SQLkiwi blog
@SQL_Kiwi

AndrewJacksonZA SSCarpal Tunnel Points: 4143 More actions · Answer 5

AndrewJacksonZA

SSCarpal Tunnel

Points: 4143

March 18, 2010 at 4:42 am

#1135826

Thanks guys.