# File lib/tapkit/access/database_context.rb, line 91
                def available_channel
                        available = nil
                        @channels.each do |channel|
                                unless channel.locking? then
                                        available = channel
                                end
                        end

                        unless available then
                                channel = DatabaseChannel.new self
                                register_channel channel
                                available = channel
                        end

                        available
                end