Specifies either the IP address in IPv4 or IPv6 format, or the server name (if your network supports named servers) of the primary database server. See Using IP Addresses for more information about using IP addresses.
This property is supported only for data source connections.
If using a tnsnames.ora file to provide connection information, do not specify this property. See Using tnsnames.ora Files for information about specifying a server name using a tnsnames.ora file.