We have 3 Oracle 19c sites. To keep it simple, call them SiteA, SiteB, and SiteC. The instance at SiteB has a DB Link to SiteA; and the instance at SiteC has a DBLink to SiteB. However, there is no dblink from SiteC to SiteA. Is there a way to access the instance at SiteA from the instance at SiteC directly, without creating another DB Link ?