When deploying a GoldenGate Hub configuration it is important to have the right skills. Just because the "Oracle" name is on the package does not make it necessarily a "DBA" tool. There are certain skills needed to successfully manage an environment such as this.
Linux skills - Linux / Unix skills are important for managing a GoldenGate environment, there are times that the GUI interfaces won't accommodate everything needed to be done from a process standpoint.
vi - vi is the standard for editing tools on linux/*nix environments, and for some folks this can be a challenging tool to master. Spending time here is well worth the time spent.
Explain scripting - Knowledge of a key scripting language is
GoldenGate common library