Mini DBA Engine collects database monitoring evidence continuously so you can investigate a performance incident after the live symptoms have disappeared. Historical views keep the selected Engine, server and time range in context while you move between metrics, queries, waits, alerts and platform-specific diagnostics.
When To Use Performance History
- Users report a slowdown after the affected sessions or queries have completed.
- An alert needs enough context to explain what the database was doing at the time.
- A recurring problem needs to be compared across several incidents.
- You need a normal baseline before changing a query, index, configuration or capacity.
- A service review or engineering handover needs evidence rather than a current-status snapshot.
Historical Evidence Available
The exact views depend on the database platform and enabled monitoring features. Historical investigation can include:
- Server, database and host performance metrics.
- Query duration, executions, CPU, reads, writes and available execution plans.
- Wait activity, sessions, blocking and deadlock evidence.
- Active and historical alerts from trial or licensed Engines.
- Database files, storage, connections and platform-specific health indicators.
Community Edition: metric and query history remains available where supported, but Community Engines do not evaluate, retain or expose alerts. See
Licensing for the complete entitlement rules.
Reconstruct An Incident
- Select the Engine and monitored server affected by the incident.
- Open a relevant historical view and narrow the time range to the reported period.
- Find the first signal that changed instead of assuming the largest graph is the cause.
- Compare workload evidence with waits, blocking, alerts and resource metrics over the same interval.
- Open the responsible query, plan, deadlock or platform detail where available.
- Compare the incident with a normal period and record the evidence supporting the conclusion.
Use AI And MCP With History
The AI Assistant can optionally receive relevant page context and the selected evidence to explain a historical symptom or suggest the next checks. The MCP Server lets an approved AI client ask broader questions across live and historical monitoring tools, including multi-engine and managed-service workflows.
AI responses should guide investigation. Verify important conclusions in Mini DBA and follow normal review and change-control procedures before modifying production databases.
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