This message appears when a user attempts an ALTER TABLE, DROP TABLE, or DROP VIEW statement in the user's default schema, and the user does not own the schema, possess the OWNER privilege on it, or possess DBA privileges. This message also appears if a DROP DOMAIN or RENAME DOMAIN statement specifies a domain on which the user issuing the statement has no privileges.
In order to ALTER, DROP, or RENAME these database objects, the OWNER privilege on the schema containing the object must be granted by the schema owner or the DBA.