Sql Server 2012 R2 (RECOMMENDED →)

-- Blocking chains SELECT session_id, blocking_session_id, wait_type, wait_time FROM sys.dm_exec_requests WHERE blocking_session_id > 0;

For over a decade, this combination powered everything from global banking systems to local retail point-of-sale platforms like Oracle MICROS Simphony . It was known for: sql server 2012 r2