Unable to see list of tables in Oracle SQL Developer
For where you are looking, you can only see the tables that exist in the schema that belongs to the user you supplied in your connection details.

If you want to see 'the tables' - you need to expand the 'Other Users' node, and explore the users there, and go to their respective tables list.

If you can query these objects in a worksheet w/o adding a SCHEMA. prefix to the FROM clause, it's because there is a SYNONYM that allows you to do so.

You can configure SQLDev to show these SYNONYMS as tables in your tree.



I talk about how to do this here.