If the OLEDB client - system connection cannot be established, the OLEDB client will be unable to connect to ClearSCADA.
The connection may fail to establish if:
- There is a network failure. You will need to investigate your network infrastructure and repair any faults.
- A firewall is in place and is incorrectly configured. The firewall has to allow the OLEDB client to send data to the ClearSCADA server’s incoming port (5481 by default). The firewall also has to allow the ClearSCADA server to send data via the server advise connection. The server advise connection uses one of the ports in the OLEDB client’s Sockets range, (5500 to 5509 inclusive by default).
The firewall rules for Third Party OLEDB Client - System connections are the same as those for ViewX - system connections.
Further Information
Firewall Settings for Client - System and Server Advise Connections.