Custom Time Range
All charts on the Trends page share a time range selector that controls the period displayed. In addition to predefined presets, you can define any custom date and time range to focus on a specific period of interest.
Predefined Presets
For quick access, the time range selector offers the following presets:
| Preset | Coverage | Best For |
|---|---|---|
| Last 7 days | Rolling 7-day window | Weekly review |
| Last 30 days | Rolling 30-day window | Monthly trend analysis |
| Last 90 days | Rolling 90-day window | Quarterly capacity planning |
{screenshot: trends-preset-selector}
Click any preset to immediately update all charts on the page.
Custom Date Range
To analyze a specific period, select Custom from the time range selector.
{screenshot: trends-custom-date-picker}
A date picker appears with two fields:
| Field | Description |
|---|---|
| From | Start date and time of the analysis period |
| To | End date and time of the analysis period |
Select your dates and click Apply. All charts update to display data for the selected period.
Tips for Custom Ranges
Incident Analysis
To analyze a specific incident:
- Set From to a few hours before the incident started
- Set To to a few hours after the incident ended
- Observe metric behavior leading up to and during the event
Comparing Periods
The Trends page currently displays one time range at a time. To compare two periods, open two browser tabs with the Trends page — one for each period.
Aligning with AWR Reports
To align a Trends view with an AWR report:
- Note the begin and end snapshot timestamps from the AWR report
- Use those timestamps as the From and To values in the custom range selector
- The Trends charts will cover the same interval as the AWR report
Data Resolution
Data points in Trends charts come from AWR snapshots created every 30 minutes. The chart resolution is therefore:
| Time Range | Approximate Data Points |
|---|---|
| Last 7 days | ~336 points |
| Last 30 days | ~1,440 points |
| Last 90 days | ~4,320 points |
| Custom 1 day | ~48 points |
For very long ranges (> 90 days), charts may aggregate data points to maintain readability.