Category: IT & Sysadmin
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How to make your databases smaller and faster: find unused indexes
Indexes are one of the most powerful performance tools in SQL Server — and one of the most overlooked sources of overhead. Every index you create must be maintained on every INSERT, UPDATE, and DELETE operation. Unused indexes cost you disk space, backup time, memory, and write performance, without providing any read benefit. Finding and…
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Queries to see rapidly what your SQL Server is doing NOW
When troubleshooting performance issues on a SQL Server instance, the first step is always to understand what is happening right now: which queries are running, which sessions are blocking others, and where time is being spent waiting. These three T-SQL scripts give you an immediate picture of the current workload using Dynamic Management Views (DMVs).…