Data Monitoring / SQL Server Availability & Capacity
SQL Server: Deadlock recurrence
Applications retry successfully but users experience intermittent delays. Capture deadlock graphs and map victim statements to transaction access order.
Environment and inputs: SQL Server operational monitoring; availability groups, SQL Agent and host-level metrics depend on edition, service and deployment.
Failure scenario
Applications retry successfully but users experience intermittent delays. Confirm the cause before choosing a fix.
Evidence to collect
Capture deadlock graphs and map victim statements to transaction access order. Record the time, affected scope and a healthy comparison interval.
Fix the confirmed cause
Reduce conflicting transaction patterns and validate retries without suppressing the diagnostic signal. Write the expected result first. Change one relevant setting at a time.
Check the result and hand over
Repeat the check for deadlock recurrence using the same scope and a representative interval. Check that the symptom is resolved, expected records are present and downstream results are correct. If coverage, correctness or latency worsens, restore the recorded configuration through the agreed rollback process.
Scope and precautions
Prefer read-only access and limit queries to the relevant period or dataset. This example has not been tested on your systems. Test changes in an approved environment. Keep credentials and sensitive data out of shared evidence.