Error <number> of <number> data sources is not responding on view for a data source with multiple instances;
1 of 3 data sources is not responding.
One of the data sources is not available or responding
Release : 3.7
Component : CA Performance Center
in CA Performance Center check:
Administration->Data Sources->Data Sources
This will list all data sources and their status.
Resolve the issue with the data source listed as having an issue.