Workload visibility without ASH
Oracle Active Session History is powerful. It is also tied to the Oracle
From Spike to SQL
From a visible change in database activity to the responsible SQL and execution plan—in seconds.
When Oracle Performance Data Becomes a Cardinality Problem
A measured use case showing why detailed Oracle SQL, plans, sessions and activity history fit a relational repository better than a Prometheus-compatible time-series model.
Harry detects stale Oracle performance ingestion before you get a call at 2 AM
True story: an accidental configuration change triggered Harry’s self-monitoring exactly as designed.
The maintenance issue: surviving a datacenter outage
How Harry isolates unavailable Oracle databases, preserves honest RED monitoring state, and continues collecting healthy targets during planned or unplanned infrastructure outages.