Can I grant privileges to a role without specifying an object?
The system privileges that relate to the object types (CREATE TABLE, VIEW, ...) can be divided in two groups:


Those that lack the keyword ANY are only effective on the user's own schema.
Those with the keyword ANY (DROP ANY TABLE, EXECUTE ANY PROCEDURE, ...) are effective on all schemas. Consequently, you should restrict the ANY privileges to administrative users.


If you grant an object type privilege (without ANY) such as CREATE TABLE to a role, all users of this role will be able to assert this privilege on their own schema. Consequently you can grant these privileges to a role and the users will inherit such rights (on their own schema) when they are granted the role.