In order for the RESTful Service utility to be available and function properly, the following requirements must be met:
The RESTful Services option in SQL Workshop is available when the workspace preference settings for enabling SQL Workshop and RESTful Services are enabled. The instance administrator must allow RESTful Service access for the Application Express instance in order for these workspace preference options to be available on the workspace level. See Oracle Application Express Administration Guide.
The Oracle Application Express Listener version 2.0 or higher must be used. The Oracle XML DB HTTP Server with the embedded PL/SQL gateway and Oracle HTTP Server with mod_plsql do not support this functionality. See Oracle Application Express Listener Installation and Developer Guide.