Oracle E-Business Suite Release 12 has a restriction on the lengths of the host names you can use. The exact restriction depends on which of the following EBS Release Update Packs you have applied:
Each of these will be considered in turn.
The node names returned by the operating system for the database tier and application tier nodes must be no longer than 30 characters. If you configure your system to return only the host name for the node, then the host name must be no longer than 30 characters. If you configure your system to return the fully qualified domain name (FQDN), then the FQDN must be no longer than 30 characters, including the host name, domain name, and periods (.) used as separators.
The following screens are where you need to ensure you enter host names that meet the current requirements.
This restriction is mentioned in Oracle E-Business Suite Installation Guide: Running Rapid Install and the release notes for the affected releases.References