5-Minute Resolution Missing for Long Timeframes
Article ID: 441952
Updated On:
Products
Issue/Introduction
Users are unable to see 5-minute (As Polled) resolution data in dashboard graphics when viewing timeframes longer than 45 days (e.g., previous month reports), even if the "Run Dashboards At Higher Resolution" role right is assigned. The system automatically reverts to Hourly or Daily resolution.
Symptoms
- Dashboard settings are configured for 5-minute resolution.
- The same report works in a Lab environment for the same timeframe but fails in Production.
- The report subtitle indicates a lower resolution (Hourly/Daily) than what was selected in the settings.
- The issue typically occurs when the requested time range exceeds 45 days.
Environment
DX NetOps Performance Management: Any version
Cause
The Data Aggregator (DA) has a default retention period of 45 days for "As Polled" (raw) data. If a user requests a report for a timeframe that exceeds the configured retention (e.g., a report run on May 27 for data from April 1, which is a 56-day span), the system cannot retrieve the raw data and automatically rolls over to the next available tier (Hourly).
Resolution
To resolve this, you must increase the Data Aggregator retention period for polled data to match your reporting requirements.
Step 1: Check Current Retention Settings
You can verify the current retention settings via the REST API using a web browser or cURL:
URL: http://[DA_HOSTNAME]:8581/rest/globalretentiondefinition
Look for the following tag in the XML output: <PolledDataRetentionPeriod>45</PolledDataRetentionPeriod>
Step 2: Increase the Retention Period
Use a REST client or cURL to perform a PUT request to update the retention.
Warning: Increasing retention will increase disk space usage on the Data Repository (Vertica). Ensure the environment is sized appropriately before proceeding.
cURL Example: Review this command before running it.
(Note: Replace 60 with your desired number of days and 5 with the correct ID found in your GET request if it differs.)
Step 3: Verify User Role Rights
Ensure the user's role has the Run Dashboards At Higher Resolution right assigned. Note that even with this right, the system uses the following maximum time ranges by default:
- As Polled Data: ≤ 31 days (unless retention is increased)
- Hourly Resolution: > 31 days
To allow high resolution for longer periods in the Portal UI, you may also need to adjust the ReportResolutionSettable attribute in the debug menu (/pc/center/admin/debug/attrs).
Additional Information
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