VIEWS OVER EXTERNAL TABLES
(Doc ID 1530608.1)
Last updated on MARCH 03, 2019
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
When a view is created over an external table, if select on the view is granted to another user it is not sufficient privilege to be able to select from the view, as with standard views, even if the user has read privilege on the associated directory. It is also necessary for the user to be granted select on the external table directly. This is not documented.
The problem arises since the access driver for the external table needs to do a DESCRIBE of the external table internally for which the user has no privileges.
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