Performance Tuning with SQL Server Dynamic Management Views

Listing 2.3: Who is connected?
Chapter 2: Connections, Sessions and Requests
This particular query provides the IP address and name of the machine from which
the connection is being made, to a given SQL Server instance, the name of the program
that is connecting, and the number of open sessions for each connection. This query,
in our environment, is limited to workstation-class clients only. However, you can
easily manipulate the WHERE clause of the statement to fit the naming conventions of
the hardware in your environment.
I find this to be extremely useful information in several ways. It lets you see which
middle-tier servers are connecting to your server, and how many sessions each one of
them has, which is very helpful when you are trying to help your developers debug
application or connectivity issues. It lets you see if anyone is using SSMS to connect to
your instance.
From these results, I would immediately review the possibility of an issue relating to
the Helpsofton 2on 2 application, at address 63.3.83.240, as it is a workstation-class box
generating 24 connections on software I know does not require such activity. Likewise, I
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