SQL Server Performance TOP CPU Query -1

Hi,

If you got slowness complaint from customer,  you need to monitor SQL Server Instance and database which sql is consuming a lots of resource.

SQL Server DBA should monitor database everytime and if there are many sqls which is running long execution time or consuming a lots of CPU resource then it should be reported to the developer and developer and dba should examine these sqls.

You can find TOP CPU queries in SQL Server database with following query.

select top 50
query_stats.query_hash,
SUM(query_stats.total_worker_time) / SUM(query_stats.execution_count) as avgCPU_USAGE,
min(query_stats.statement_text) as QUERY
from (
select qs.*,
SUBSTRING(st.text,(qs.statement_start_offset/2)+1,
((case statement_end_offset
when -1 then DATALENGTH(st.text)
else qs.statement_end_offset end
- qs.statement_start_offset)/2) +1) as statement_text
from sys.dm_exec_query_stats as qs
cross apply sys.dm_exec_sql_text(qs.sql_handle) as st 
) as query_stats
group by query_stats.query_hash
order by 2 desc

Query result will be like following screenshot

Do you want to learn Microsoft SQL Server DBA Tutorials for Beginners, then read the following articles.

https://ittutorial.org/sql-server-tutorials-microsoft-database-for-beginners/