Oracle is going to drive a man to drink. After getting our rake migrations to run with this solution, our application had issues. We run our Rails app in Passenger + Apache2. After we deployed, we got this error:
ERROR: ActiveRecord oracle_enhanced adapter could not load ruby-oci8 library. Please install ruby-oci8 gem.
As it turns out, Passenger does not pick up the LD_LIBRARY_PATH and the only way I’m aware of set it is to create a wrapper for the ruby binary. To fix this, create the file /usr/local/bin/passenger-ruby:
#!/bin/sh export LD_LIBRARY_PATH=/opt/oracle/instantclient_11_2 exec "/usr/bin/ruby" "$@"
Then update passenger.conf and change PassengerRuby to:
PassengerRuby /usr/local/bin/passenger-ruby
Don’t forget to restart Apache. Good luck.

Thanks for the post…
I have same above issue with passenger (3.0.0)latest version.
I have installed RVM with single user mode.
/home/deploy/.rvm/rubies/ruby-1.9.2-p0/bin/ruby
And my passenger.conf has already path define for ‘passenger-ruby’ file. and this file has already following code.
#!/usr/bin/env bash
if [[ -s "/home/passenger/.rvm/environments/ruby-1.9.2-p0" ]] ; then
source “/home/passenger/.rvm/environments/ruby-1.9.2-p0″
exec ruby “$@”
else
echo “ERROR: Missing RVM environment file: ‘/home/passenger/.rvm/environments/ruby-1.9.2-p0′” >&2
exit 1
fi
Please help me to add LD_LIBRARY_PATH in this file.