    # File lib/active_record/connection_adapters/oracle_adapter.rb, line 193
            def active?
              # Pings the connection to check if it's still good. Note that an
              # #active? method is also available, but that simply returns the
              # last known state, which isn't good enough if the connection has
              # gone stale since the last use.
              @connection.ping
            rescue OCIException
              false
            end