In this post, I am sharing one TSQL script to find top 20 Running Queries, which are utilizing more CPU time and degrade the performance of the SQL Server.

The database performance optimization is one the most important task for Database Professionals.

We have found that many times SQL Server occupying more CPU resources and at that time it is required to find which runnable query is occupying more CPU resources.

I am using sys.dm_exec_cached_plans to find CPU used by all the running queries.

SELECT TOP 20
	SP.SPID AS ProcessID
	,SP.CPU AS CPU
	,EST.text AS QueryText
	,SP.Open_tran AS IsAnyOpen_Transaction
	,SP.Status AS StatusText
	,SP.program_name AS ApplicationName
	,SP.loginame AS LoginName
FROM sys.sysprocesses AS SP
CROSS APPLY sys.dm_exec_sql_text(sql_handle) AS EST  
WHERE SP.Status = 'runnable'
ORDER BY SP.CPU DESC

In this post, I am sharing different scripts to find the running sessions and processes in SQL Server.

As a DBA, this is very much important to find all current running sessions and processes of SQL Server.

Below are three different ways for find the all running process of SQL Server.

First, Using SP_WHO & SP_WHO2:
The both commands are used to check and monitor current running connections and sessions of the SQL Server.

SP_WHO : provides information like: Session ID, Logged User ID, Host Name, Session Status, Blocked Process, Database Name, Command Details, Request ID.

SP_WHO2 : provides some additional information like : CPU Time by each session, no of Disk Reads, Last query execution time

Second, Using sysprocesses View:

SELECT 
    DB_NAME(DBID) AS DataBaseName
    ,COUNT(DBID) AS NumberOfConnections
    ,LogiName 
FROM sys.sysprocesses
WHERE DBID > 0
GROUP BY DBID, LogiName

Third, Using dm_exec_requests:

SELECT
	der.session_id
	,est.TEXT AS QueryText
	,der.status
	,der.blocking_session_id
	,der.cpu_time
	,der.total_elapsed_time
FROM sys.dm_exec_requests AS der
CROSS APPLY sys.dm_exec_sql_text(sql_handle) AS est