Age Open Transactions with sys.dm_tran_active_transactions
A transaction that never commits keeps every log record written after it pinned in place, no matter how much work piles up behind it. sys.dm_tran_active_transactions lists every transaction currently open on the instance, but on its own it only shows a transaction ID and a start time — pairing it with …
Read MoreSQL Server Long-Running Queries: Find Active Sessions
Apr 12, 2026 / · 6 min read · sql server performance monitoring sql scripts sys.dm_exec_requests sys.dm_exec_sql_text blocking wait types database administration active sessions ·Find Active Long-Running Queries in SQL Server This script queries sys.dm_exec_requests and sys.dm_exec_sql_text to show all currently executing queries on the SQL Server instance, sorted by how long they have been running, along with CPU time, I/O activity, blocking status, and wait type information. Purpose and …
Read MoreSQL Server Blocking Detection: Find Blocked Sessions
Blocking in SQL Server occurs when one session holds a lock that another session needs, causing the second session to wait. This T-SQL script queries the dynamic management views to show all currently blocked sessions, the blocking session, wait type, wait duration, and the SQL text involved. Purpose and Overview When …
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