clear_reloadable_connections! (ActiveRecord::ConnectionAdapters::ConnectionPool)

    # File lib/active_record/connection_adapters/abstract/connection_pool.rb, line 137
          def clear_reloadable_connections!
            @reserved_connections.each do |name, conn|
              checkin conn
            end
            @reserved_connections = {}
            @connections.each do |conn|
              conn.disconnect! if conn.requires_reloading?
            end
            @connections = []
          end