Hi,
You should find that which of wait events are in the SQL Server database.
Read previous article with following link
To solve slowness of SQL Server database, you should find which wait events exists in the database.
You can find wait events of database with following query.
SELECT getdate() as 'Run_Time' --script running time
, wait_type --wait type
,waiting_tasks_count
, CAST(wait_time_ms / 1000. AS DECIMAL(12, 2)) AS wait_time_s --saniye cinsinden bekleme zamaný
, CAST(100. * wait_time_ms / SUM(wait_time_ms) OVER() AS DECIMAL(12, 2)) AS pct --toplam beklemeye oraný
FROM sys.dm_os_wait_stats
WHERE wait_type NOT IN ('BROKER_TASK_STOP','Total','SLEEP','BROKER_EVENTHANDLER','BROKER_RECEIVE_WAITFOR',
'BROKER_TRANSMITTER','CHECKPOINT_QUEUE','CHKPT,CLR_AUTO_EVENT','CLR_MANUAL_EVENT','KSOURCE_WAKEUP','LAZYWRITER_SLEEP',
'LOGMGR_QUEUE','ONDEMAND_TASK_QUEUE','REQUEST_FOR_DEADLOCK_SEARCH','RESOURCE_QUEUE','SERVER_IDLE_CHECK',
'SLEEP_BPOOL_FLUSH','SLEEP_DBSTARTUP','SLEEP_DCOMSTARTUP','SLEEP_MSDBSTARTUP','SLEEP_SYSTEMTASK','SLEEP_TASK',
'SLEEP_TEMPDBSTARTUP','SNI_HTTP_ACCEPT','SQLTRACE_BUFFER_FLUSH','TRACEWRITE','WAIT_FOR_RESULTS','WAITFOR_TASKSHUTDOWN',
'XE_DISPATCHER_WAIT','XE_TIMER_EVENT','WAITFOR')
ORDER BY 4 DESC
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/