9.6.4.1 Using Fine-Grained Metrics
Traditionally, Exadata collects metrics at one-minute intervals. However, real-time monitoring requires more frequent data collection. To address this, beginning with Oracle Exadata System Software 22.1.0, you can enable fine-grained metric collection and reduce the interval to as little as one second.
Fine-grained metric collection is the foundation for the Real-Time Insight feature. Fine-grained metric collection works in conjunction with an external metric collection platform, where the fine-grained metric observations are collected and processed for visualization. Fine-grained metric observations reside only in server memory and are not persisted on the server. Consequently, no fine-grained metric history is maintained on each server.