Locking in SQL Server

This video is a brief information about locking in SQL server: what is locking, how many types are there and how do they work. Agenda: 1. What is locking? 2. Why do we need locking? 3. Major locking types and how they work (with live demo) To check blocking sessions, use: SELECT request_session_id, resource_type, resource_description, request_mode, request_type, request_status FROM sys.dm_tran_locks SELECT session_id, wait_duration_ms, wait_type, blocking_session_id, resource_description FROM sys.dm_os_waiting_tasks SELECT session_id, status, wait_type, wait_time, wait_resource, command FROM sys.dm_exec_requests 📚 ►Full course on Troubleshooting sessions: https://youtube.com/playlist?list=PLxuuX6jGq7kmlUblaWyfIh-iT5r0EWrJX&si=gC5FAhH9i6_b0waY 📷 ►Follow me on Instagram - https://www.instagram.com/arslanov_boburmirzo?igsh=OGQ5ZDc2ODk2ZA%3D%3D&utm_source=qr 🧑‍💼►Follow me on LinkedIn - https://www.linkedin.com/in/bobirmirzo-arslanov-548960173 Watch all my playlists here: 🚀►Full course on Encrypting connections to SQL Server- https://youtube.com/playlist?list=PLxuuX6jGq7kmqOCqYa1lFxQOKFgTfb8j8&si=bBwHhLsu6m5CjFft 🚀 ►SQL Server replication session: https://youtube.com/playlist?list=PLxuuX6jGq7km5E54qm0zc7REGXw6WD4C8&si=fQ_PVoGQ1S8SeI6X 🚀 ►SQL Server Always On Availability Group: https://youtube.com/playlist?list=PLxuuX6jGq7klnjr9OIGt8R1SN76pQzuEB&si=zZVr_sJnc7I9H8d3 🚀 ► SQL Server internals: https://youtube.com/playlist?list=PLxuuX6jGq7kk5_OkxbZ8QDZ2HFBDy2XZ2&si=U2rRfgS2y87t5SU4 🚀 ► Course in On-memory OLTP: https://youtube.com/playlist?list=PLxuuX6jGq7kmt6gfHUW5KhfXGaoSiDXOB&si=fVS1s2L6If36Zg-r