An interaction between two processes on a network. A notification sent by an initiator and received by a listener that indicates that the initiator wants to start a connection. D data packet See packet. An Oracle username that has been given DBA privileges and can perform database administration functions. Usually the two meanings coincide.
Many sites have multiple DBAs.
Once defined, the database link is used to access the remote database. Also called DB link. A public or private database link from one database to another is created on the local database by a DBA or user. A global database link is created automatically from each database to every other database in a network with Oracle Names. Global database links are stored in the network definition.