How to find deadlocks – which is currently blocked some stored procedures in SQL SSMS.

Let’s discuss this table definition and how this table will help us to make this query

sys.dm _exec_requests:

sys.dm_exec_requests is not a table in the traditional sense; rather, it's a Dynamic Management View (DMV) provided by Microsoft SQL Server.

• It serves as a valuable tool for database administrators and developers to monitor and manage the currently executing requests or sessions on the SQL Server instance.
• This dynamic management view is particularly useful for monitoring and troubleshooting database performance, identifying long-running queries, detecting blocking issues, and understanding resource utilization on the server. It provides valuable insights into the current activity happening on the SQL Server instance, allowing database administrators and developers to optimize and tune database operations effectively.

Overall, sys.dm_exec_requests is a critical tool for real-time performance monitoring and troubleshooting in SQL Server environments. It allows database administrators and developers to gain visibility into the activity happening on the server and take proactive measures to optimize performance and maintain stability.

sys.dm_exec_sessions:

sys.dm_exec_sessions is another Dynamic Management View (DMV)provided by Microsoft SQL Server.

• It contains information about all active sessions on the SQL Server instance, including user sessions, system sessions, and internal background tasks.
• The intention of sys.dm_exec_sessions is to provide a comprehensive view of the current sessions connected to the SQL Server instance, along with various attributes and properties associated with each session.

Overall, sys.dm_exec_sessions serves as a valuable tool for monitoring and managing the sessions connected to a SQL Server instance. By querying this DMV, administrators can gain insights into session activity, resource utilization, blocking scenarios, and transactional behavior, allowing them to optimize server performance and troubleshoot issues effectively.

sys.dm_exec_connections

sys.dm_exec_connections is a Dynamic Management View (DMV) provided by Microsoft SQL Server.

It contains information about the current connections established to the SQL Server instance, including details about client connections, protocols, and network addresses.

• The intention of sys.dm_exec_connections is to provide administrators and developers with insights into the active connections to the SQL Server instance
• Overall, sys.dm_exec_connections serves as a valuable tool for monitoring and managing client connections to a SQL Server instance. By querying this DMV, administrators can gain insights into connection properties, network protocols, resource utilization, and session associations, allowing them to troubleshoot connectivity issues and optimize server performance effectively.

sys.dm_exec_sql_text

sys.dm_exec_sql_text is not a table but rather a Dynamic Management Function (DMF) provided by Microsoft SQL Server.

• It is used to retrieve the text of the SQL statements that are currently being executed or that have been executed recently. This function is particularly useful for monitoring and troubleshooting purposes.

Overall, sys.dm_exec_sql_text is a valuable tool for monitoring and troubleshooting SQL Server instances. It provides insights into the SQL statements being executed, allowing administrators to diagnose performance issues, optimize queries, and ensure the security and stability of the database environment.

Attention

Dynamic management views (DMVs) and dynamic management functions (DMFs) return server state information that can be used to monitor the health of a server instance, diagnose problems, and tune performance.

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