slogging my way thru oracle, not adapter? gem install fails?

<ubuntu_gutsy> me@ubuntu:~/workspace/oracle/ro$ gem install
Bulk updating Gem source index for:
ERROR: While executing gem ... (Gem::GemNotFoundException)
    Could not find activerecord-oci-adapter (> 0) in any repository
<ubuntu_gutsy> me@ubuntu:~/workspace/oracle/ro$ rake db:migrate
(in /home/me/workspace/oracle/ro)
rake aborted!
Please install the oci adapter: `gem install activerecord-oci-adapter`
(no such file to load -- active_record/connection_adapters/oci_adapte

(See full trace by running task with --trace)

Just try again, sometimes the gem servers are down.

As deal with the problem?

Please use the following command to install the oracle adapter:
  gem install activerecord-oracle-adapter --source

See .