Virtualbox client guest cannot connect to virtualbox server guest

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http://serverfault.com – Presently I'm experimenting with the Oracle Developer Days appliance. So far, everything has worked great. I can connect to the oracle server from the host computer without a problem and do whatever I want. I then decided I needed some isolation for testing. So, I created a secondary VM with a clean Windows XP SP3 guest and tried to connect to the Oracle Developer Days VM. It fails. Here's everything I have tried (keep in mind I can connect and do database tasks from the host in this configuration): Set Oracle Server VM and Client VM to have one bridged adapter and one host-only adapter Pin (HowTos)