On Linux, the RPM installer for Enterprise Developer for Eclipse installs a 64-bit version of Java. When you start the installation, if the 32-bit version of Java is already installed on your Linux machine, you might not be able to install Enterprise Developer. This is a known issue with the Oracle Java installers for Linux which prevents you from installing both the 32-bit and the 64-bit versions of Java on the same machine. To work around this problem:
If you are using AFS/Kerberos authentication to log onto your Linux system then you need to ensure you have a local user ID which SOA and Enterprise Developer components of the product can use. This user ID must be set up prior to running the installer. When running the installer you need to specify -EDadminID=[User ID] on the command line so it is used by the installer.
You need to configure the computer hostname to ensure the license server will start properly.
To avoid performance issues, "localhost" and the computer hostname must not both be mapped to IP address 127.0.0.1. You should only map "localhost" to IP address 127.0.0.1.
The following is an example of how to specify these entries correctly in the /etc/hosts file:
127.0.0.1 localhost.localdomain localhost IP machinelonghostname machineshorthostname
where IP is the unique IP address of the computer in xx.xx.xx.xx format.