Add ActiveRecord::ConnectionAdapters::OracleEnhancedAdapter#reconnect

So far `@raw_connection` does not have `close` method and no `connect` method defined,
use `@raw_connection.reset` instead.

Author: yahonda

lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb

@@ -87,6 +87,10 @@ def active?
           @raw_connection.active?
         end
 
+        def reset
+          @raw_connection.reset
+        end
+
         def reset!
           @raw_connection.reset!
         rescue OCIException => e
@@ -405,6 +409,11 @@ def ping # :nodoc:
     raise
   end
 
+  def reset
+    # tentative
+    reset!
+  end
+
   # Resets connection, by logging off and creating a new connection.
   def reset! # :nodoc:
     logoff rescue nil

lib/active_record/connection_adapters/oracle_enhanced_adapter.rb

@@ -451,6 +451,12 @@ def active? # :nodoc:
         false
       end
 
+      def reconnect
+        @raw_connection.reset # tentative
+      rescue OracleEnhanced::ConnectionException
+        connect
+      end
+
       # Reconnects to the database.
       def reconnect! # :nodoc:
         super