Grant permissions on a view or materialized view to a user, user-extended role, or
standalone role.
About the User or Role View Permissions List
The Views permissions list displays permission details the tables and column directly granted to a user, user-extended role, or standalone role.
Following the User or Role View Permission List
Before revoking a grantee's permission, you need to identify grantees directly or indirectly granted the permission from the original grantee.