Topic

Dynamic management views

Server-state views in SQL Server that expose runtime counters and metadata about sessions, indexes, storage and the instance itself, used for diagnostics rather than for application data.

Current clusters

build1 publisher

A SQL Server restart zeroes the usage counters that justify dropping an index

sys.dm_db_index_usage_stats counts seeks, scans and lookups only since the instance came up, so an index with no reads may just be waiting for its monthly job. One cross join puts that window in the report.

Publishers:dev.to

Reality

Evidence65
Adoption: Insufficient
Hype gap−12
Incentives20
Confidence72