Register the host names that HiRDB will use (host names specified by the system definitions and client environment definitions) in the hosts file or DNS, and resolve the names.

Specify host names in the system definitions and client environment definitions in host name, IP address or FQDN format.

When the HiRDB system is configured with only a HiRDB single server configuration^#, a loopback address can be specified in the system definitions or client environment definitions. If a loopback address is specified, the host name need not be registered.

#

A HiRDB system made up of HiRDB single server configurations only is one that meets the following conditions:

• The HiRDB clients are on the same machines as the HiRDB servers (there are no HiRDB clients on separate machines).
• There is no utility special unit.
  

  Reference note

  A loopback address is an IP address in the range 127.0.0.0 to 127.255.255.255 (for example, 127.0.0.1). The OS specifications dictate which IP addresses can be specified as loopback addresses.

  Note that since HiRDB treats localhost as an ordinary host name, when localhost is specified as a host name in the system definitions, it must be registered as a host name and name resolution must be performed.