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

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

When the HiRDB system is configured using a HiRDB/Single Server alone,^# a loopback address can be specified in the system definitions or client environment definitions. If a loopback address is specified, host names need not be registered.

#

A HiRDB system made up of HiRDB/Single Servers only is one that meets the following condition:

• The HiRDB clients are on the same machines as the HiRDB servers (there are no HiRDB clients on separate machines).
  

  Reference note

  A loopback address is an IP address in the range from 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.