The portion of the connect descriptor that defines the destination database service name or Oracle System Identifier (SID). In the following example, SERVICE_NAME specifies a database service called sales.us.acme.com:

(description=
 (address=(protocol=tcp)(host=sales-pc)(port=1521)
 (connect_data=
  (service_name=sales.us.acme.com)))

CONNECT_DATA can be configured with advanced connection information.

See Also: Configure Advanced Connect Data Options