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You are a database developer for a company. The company has a server that has multiple physical disks. The disks are not part of a RAID array. The server hosts three

Microsoft SQL Server instances. There are many SQL jobs that run during off-peak hours.

You must monitor the SQL Server instances in real time and optimize the server to maximize throughput, response time, and overall SQL performance.

What should you do?

A. A. Create asys.dm_os_waiting_tasks query.

B. Create a sys.dm_exec_sessions query.

C. Create aPerformance Monitor Data Collector Set.

D. Create a sys.dm_os_memory_objects query.

E. Create a sp_configure -max server memory- query.

F. Create a SQL Profil

er trace.

G. Create a sys.dm_os_wait_stats query.

H. Create an Extended Event.

Explanation:

sys.dm_exec_sessions returns one row per authenticated session on SQL Server. sys.dm_exec_sessions is a server-scope view that shows information about al

l active user connections and internal tasks. This information includes client version, client program name, client login time, login user, current session setting, and more. Use

sys.dm_exec_sessions to first view the current system load and to identify a

session of interest, and then learn more information about that session by using other dynamic management views or dynamic management functions.

Examples of use include finding long-running cursors, and finding idle sessions that have open transactions.