Q15. Which three are true about thresholds, metrics, and server-generated alerts?
- A. A space usage management alert is automatically cleared after the underlying problem is resolved.
- B. They are generated by SMON when a tablespace is 97% full.
- C. Metrics are statistical counts for specific unit.
- D. Cleared stateful alerts are displayed by querying DBA_ALERT_HISTORY.
- E. All metrics are instance related.
- F. STATISTICS_LEVEL must be set to ALL to generate alerts.
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