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“Monitor deadlock rate and transaction retries” concerns Deadlock graphs repeatedly identify the same pair of statements; the reported problem instead is The cached query plan favors one selectivity pattern. Monitor plan forcing and parameter regression.

“Monitor Query Store regressed queries” concerns Query Store captures a new high-cost plan; the reported problem instead is The cached query plan favors one selectivity pattern. Monitor plan forcing and parameter regression.

“Monitor stats modification counts and plan churn” concerns Outdated statistics misestimate filtered cardinality; the reported problem instead is The cached query plan favors one selectivity pattern. Monitor plan forcing and parameter regression.

“Inspect Query Store plans and parameter distributions” concerns The cached query plan favors one selectivity pattern; the reported problem instead is Query Store captures a new high-cost plan. Compare plans, duration and deployment timestamp.

“Inspect wait stats, isolation settings and transaction duration” concerns Readers wait for exclusive locks during updates; the reported problem instead is Query Store captures a new high-cost plan. Compare plans, duration and deployment timestamp.

“Inspect actual plans, existing overlapping indexes and workloads” concerns A single recommendation ignores write/storage cost; the reported problem instead is Query Store captures a new high-cost plan. Compare plans, duration and deployment timestamp.

“Update appropriate statistics or adjust stats maintenance process” concerns Outdated statistics misestimate filtered cardinality; the reported problem instead is Query Store captures a new high-cost plan. Correct indexing/statistics or use an approved plan correction mechanism.

“Fix cardinality/index design or query shape before increasing resources” concerns Actual plan warns of spill and high memory grant; the reported problem instead is Query Store captures a new high-cost plan. Correct indexing/statistics or use an approved plan correction mechanism.

“Use appropriate plan-stability or parameter-sensitivity strategy based on supported engine” concerns The cached query plan favors one selectivity pattern; the reported problem instead is Query Store captures a new high-cost plan. Correct indexing/statistics or use an approved plan correction mechanism.

“Replay representative sort with captured plans” concerns Actual plan warns of spill and high memory grant; the reported problem instead is Query Store captures a new high-cost plan. Replay affected query with prior and candidate plan on snapshot.

“Benchmark candidate and baseline indexes under mixed reads/writes” concerns A single recommendation ignores write/storage cost; the reported problem instead is Query Store captures a new high-cost plan. Replay affected query with prior and candidate plan on snapshot.

“Replay concurrent update/read workload against a sandbox copy” concerns Readers wait for exclusive locks during updates; the reported problem instead is Query Store captures a new high-cost plan. Replay affected query with prior and candidate plan on snapshot.

“Both workloads meet latency goals with correct row results” concerns The cached query plan favors one selectivity pattern; the reported problem instead is Query Store captures a new high-cost plan. Query performance returns without incorrect forced assumptions.

“Plan uses efficient seeks without excessive key lookups” concerns Existing index begins with a rarely filtered column; the reported problem instead is Query Store captures a new high-cost plan. Query performance returns without incorrect forced assumptions.

“Spill events decrease and query remains correct” concerns Actual plan warns of spill and high memory grant; the reported problem instead is Query Store captures a new high-cost plan. Query performance returns without incorrect forced assumptions.

“Monitor plan forcing and parameter regression” concerns The cached query plan favors one selectivity pattern; the reported problem instead is Query Store captures a new high-cost plan. Monitor Query Store regressed queries.

“Monitor version-store usage and long transactions” concerns Concurrent updates produce inconsistent intermediate totals; the reported problem instead is Query Store captures a new high-cost plan. Monitor Query Store regressed queries.

“Monitor row versioning and tempdb or persistent version-store pressure” concerns Readers wait for exclusive locks during updates; the reported problem instead is Query Store captures a new high-cost plan. Monitor Query Store regressed queries.

“Inspect Query Store plans and parameter distributions” concerns The cached query plan favors one selectivity pattern; the reported problem instead is A single recommendation ignores write/storage cost. Inspect actual plans, existing overlapping indexes and workloads.

“Compare statistics age and actual-versus-estimated rows” concerns Outdated statistics misestimate filtered cardinality; the reported problem instead is A single recommendation ignores write/storage cost. Inspect actual plans, existing overlapping indexes and workloads.

“Compare plans, duration and deployment timestamp” concerns Query Store captures a new high-cost plan; the reported problem instead is A single recommendation ignores write/storage cost. Inspect actual plans, existing overlapping indexes and workloads.

“Correct indexing/statistics or use an approved plan correction mechanism” concerns Query Store captures a new high-cost plan; the reported problem instead is A single recommendation ignores write/storage cost. Evaluate consolidated indexes against read/write impact instead of blindly applying DMV hint.

“Create or revise composite index key order for dominant filters” concerns Existing index begins with a rarely filtered column; the reported problem instead is A single recommendation ignores write/storage cost. Evaluate consolidated indexes against read/write impact instead of blindly applying DMV hint.

“Evaluate READ_COMMITTED_SNAPSHOT after compatibility tests” concerns Readers wait for exclusive locks during updates; the reported problem instead is A single recommendation ignores write/storage cost. Evaluate consolidated indexes against read/write impact instead of blindly applying DMV hint.

“Replay affected query with prior and candidate plan on snapshot” concerns Query Store captures a new high-cost plan; the reported problem instead is A single recommendation ignores write/storage cost. Benchmark candidate and baseline indexes under mixed reads/writes.

“Benchmark small and large tenant parameter sets in test SQL” concerns The cached query plan favors one selectivity pattern; the reported problem instead is A single recommendation ignores write/storage cost. Benchmark candidate and baseline indexes under mixed reads/writes.

“Benchmark lookups before/after on representative dataset” concerns Existing index begins with a rarely filtered column; the reported problem instead is A single recommendation ignores write/storage cost. Benchmark candidate and baseline indexes under mixed reads/writes.

“Plan uses efficient seeks without excessive key lookups” concerns Existing index begins with a rarely filtered column; the reported problem instead is A single recommendation ignores write/storage cost. End-to-end workload improves after considering maintenance costs.

“Query performance returns without incorrect forced assumptions” concerns Query Store captures a new high-cost plan; the reported problem instead is A single recommendation ignores write/storage cost. End-to-end workload improves after considering maintenance costs.

“Read latency improves without lost-update application logic” concerns Readers wait for exclusive locks during updates; the reported problem instead is A single recommendation ignores write/storage cost. End-to-end workload improves after considering maintenance costs.

“Monitor Query Store regressed queries” concerns Query Store captures a new high-cost plan; the reported problem instead is A single recommendation ignores write/storage cost. Monitor index usage and storage overhead.

Index-seek counts and write cost can reveal performance trade-offs, but the question specifically requires measurement of accumulated index storage overhead together with actual usage. The usage/storage pair in A covers both named metrics.

“Monitor version-store usage and long transactions” concerns Concurrent updates produce inconsistent intermediate totals; the reported problem instead is A single recommendation ignores write/storage cost. Monitor index usage and storage overhead.