Database connection sleep awaiting command | open Connection

 I have a MVC application with high end user running with Web API and ADO .NET as ORM. From past some days I face DB open connection issue and the connection is reach out about 10k and not relase.

 

I checked also my ADO .NET SQL Helper the conncetion is closed on every request and the conncection pooling is set as false as well. 

 

When I search about the issue found SQL Server Mysteries: The Case of the Suspended, Awaiting Command, and Blocked Session in the below link.

 

 https://blogs.msdn.microsoft.com/bobsql/2017/06/09/sql-server-mysteries-the-case-of-the-suspended-awaiting-command-and-blocked-session/

 

 

Someone havae any idea to get rid of this issue it will help me a lot. Thanks !

 

The below are the DB opened connections 

 

SPID	Status	BlkBy	Command	CPUTime	DiskIO	LastBatch	ProgramName	SPID	REQUESTID
720	sleeping	.	AWAITING COMMAND	0	0	9/19/2019 16:56	.Net SqlClient Data Provider	720	0
721	sleeping	.	AWAITING COMMAND	0	0	9/19/2019 16:56	.Net SqlClient Data Provider	721	0
722	sleeping	.	AWAITING COMMAND	0	0	9/19/2019 16:56	.Net SqlClient Data Provider	722	0
723	sleeping	.	AWAITING COMMAND	0	0	9/19/2019 16:56	.Net SqlClient Data Provider	723	0
724	sleeping	.	AWAITING COMMAND	0	0	9/19/2019 16:56	.Net SqlClient Data Provider	724	0
725	sleeping	.	AWAITING COMMAND	0	0	9/19/2019 16:57	.Net SqlClient Data Provider	725	0
729	sleeping	.	AWAITING COMMAND	15	0	9/19/2019 16:57	.Net SqlClient Data Provider	729	0
731	sleeping	.	AWAITING COMMAND	0	0	9/19/2019 16:57	.Net SqlClient Data Provider	731	0
697	sleeping	.	AWAITING COMMAND	15	0	9/19/2019 16:56	.Net SqlClient Data Provider	697	0