When you create a new ADF Business component that uses a DB connection (like Business component From Table, Entity Object etc..), you can see that automatically the wizard connects you to a predefined DB connection.
Usually, if you have only one DB connection defined it’s not a problem. But when you have more than one connection, you want to control the required connection.
To change or control the default connection, follow the next steps –
Right click on your project and choose Project Properties:
Go to the Business Components tab, and there you can change the connection
Another thing you might want to do, is to change the current connection on your Application Module.
For that, go to the AppModule definition and navigate to the Configuration tab.
Stand on the default configuration and click Edit:
Here you can change the connection: