String Viewer's data is stored in cache only. By going to Historical mode, we are invoking the Smartstor DB which only stores metrics, not strings.
Why cannot I see any data in String Viewer when switching from Live mode to Historical mode?
All environments with all APM releases.
This is by design. String Viewer is designed to work in Live Mode only.
Release: CEMUGD00200-9.7-Introscope to CA Application-Performance Management-Upgrade Main