Understanding and Monitoring Active Sessions in SQL Server

To check active sessions in a SQL Server database, you can use various system views and dynamic management views (DMVs) that provide information about currently connected sessions.

Here’s an example query to check active sessions in a SQL Server database:

SELECT sd.[name], sp.spid, sp.login_time, sp.loginame FROM sysprocesses sp INNER JOIN sysdatabases sd on sp.dbid = sd.dbid WHERE sd.[name] =Database Name’


This SQL query that retrieves information about processes (spids) connected to a specific database (‘Database Name‘). The query joins the sysprocesses table with the sysdatabases table to get details about the processes and the corresponding databases.

  • SELECT sd.[name], sp.spid, sp.login_time, sp.loginame: This part of the query specifies the columns you want to retrieve in the result set. It includes the database name (sd.[name]), process ID (sp.spid), login time (sp.login_time), and login name (sp.loginame).
  • FROM sysprocesses sp: This indicates that you are querying the sysprocesses system table, which contains information about the current processes on the SQL Server instance.
  • INNER JOIN sysdatabases sd on sp.dbid = sd.dbid: This part of the query performs an inner join between sysprocesses and sysdatabases on the dbid column. It links processes to their corresponding databases.
  • WHERE sd.[name] = ‘Database Name’: This is a filter that restricts the results to only include rows where the database name is equal to the specified value (‘database name’). It effectively narrows down the result set to processes associated with the specified database.

Make sure to replace ‘Database name’ with the actual name of the database you are interested in. Additionally, be aware that the sysprocesses table is deprecated, and it’s recommended to use the sys.dm_exec_sessions dynamic management view instead for querying session information in modern versions of SQL Server.


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