Issue
At first, TGML graphics in Building Operation WorkStation load correctly and display real-time values. However, after the Enterprise Server has been running for an extended period, the graphics begin to load slowly, and values stop refreshing or updating.
Restarting the Enterprise Server temporarily restores functionality, but the issue eventually reoccurs.
Product Line
EcoStruxure Building Operation
Environment
- Building Operation WorkStation
- Building Operation Enterprise Server
- TGML Graphics
- SmartConnector
Cause
This issue is typically caused by the behavior of a SmartConnector that:
- Polls values too frequently
- Creates a new login session for each poll instead of reusing an existing session
This results in a high number of open sessions with the Enterprise Server. In the SmartConnector view, multiple active sessions can be observed.
The problem tends to occur when there are more than 150 active connections, although this threshold may vary depending on the server’s processing load.
Resolution
To resolve this issue, request the SmartConnector developers to:
- Adjust the polling rate to a more appropriate interval
- Reuse existing login sessions instead of creating a new one for each poll
These changes will significantly reduce the number of active sessions and improve the performance and reliability of graphic updates in the Enterprise Server.
Additional Notes
- Monitor the number of active sessions via the SmartConnector view.
- Consider implementing session management best practices to avoid similar issues in future deployments.
