Running the External Server
Because you are using components built with an external language, the PEX framework requires an external server for your language to be running when the production is running. These external servers are also commonly referred to as gateways. It is recommended that you manually start the external server from the Management Portal or InterSystems Terminal.
The built-in external server for your PEX language contains all you need to run a PEX production. However, you also have the option of creating a custom external server, for example, if you are using Java as your external language, and want to include additional JAR files used by your application. You can create a custom external server using the Management Portal (System Administration > Configuration > Connectivity > External Servers).
Starting/Stopping the External Server
To start or stop an external server, in the Management Portal:
Select System Administration > Configuration > Connectivity > External Servers
Select the external server for your language.
Select Start to start the external server and Stop to stop the external server. You can only edit the settings when the external server is stopped.