With the various parts of the gateway configured, everything needs to be started up. The start script will use the properties file to determine things like the domain to start-up and so on.
If there is any concern about processes having started properly, it is possible to list all the Java processes (ps -ef | grep Java). The command should show up four distinct processes relating to the WebLogic server and Java database. The command for this step is:
./APIGateway -f gateway-props.json -a start