Great article about CPU utilization

https://blogs.msdn.microsoft.com/docast/2017/07/30/sql-high-cpu-troubleshooting-checklist/


https://blogs.msdn.microsoft.com/docast/2017/07/30/sql-high-cpu-troubleshooting-checklist/


WITH DB_CPU AS
(SELECT DatabaseID, 
DB_Name(DatabaseID)AS [DatabaseName], 
SUM(total_worker_time)AS [CPU_Time(Ms)] 
FROM sys.dm_exec_query_stats AS qs 
CROSS APPLY(SELECT CONVERT(int, value)AS [DatabaseID]  
FROM sys.dm_exec_plan_attributes(qs.plan_handle)  
WHERE attribute =N'dbid')AS epa GROUP BY DatabaseID) 
SELECT ROW_NUMBER()OVER(ORDER BY [CPU_Time(Ms)] DESC)AS [SNO], 
DatabaseName AS [DBName], [CPU_Time(Ms)], 
CAST([CPU_Time(Ms)] * 1.0 /SUM([CPU_Time(Ms)]) OVER()* 100.0 AS DECIMAL(5, 2))AS [CPUPercent] 
FROM DB_CPU 
WHERE DatabaseID > 4 -- system databases 
AND DatabaseID <> 32767 -- ResourceDB 
ORDER BY SNO OPTION(RECOMPILE);

If you get a plan handle pass that plan handle to the below DMV and you will get the execution plan of the query

sys.dm_exec_query_plan









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