Fix the Oracle adapter for serialized attributes stored in CLOBs. Closes #6825 [mschoen, tdfowler]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5866 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Fix the Oracle adapter for serialized attributes stored in CLOBs.  Closes #6825 [mschoen, tdfowler]
+
 * [DOCS] Apply more documentation for ActiveRecord Reflection.  Closes #4055 [Robby Russell]
 
 * [DOCS] Document :allow_nil option of #validate_uniqueness_of. Closes #3143 [Caio Chassot]

activerecord/lib/active_record/connection_adapters/oracle_adapter.rb

@@ -48,6 +48,7 @@ def write_lobs() #:nodoc:
         if connection.is_a?(ConnectionAdapters::OracleAdapter)
           self.class.columns.select { |c| c.sql_type =~ /LOB$/i }.each { |c|
             value = self[c.name]
+            value = value.to_yaml if unserializable_attribute?(c.name, c)
             next if value.nil?  || (value == '')
             lob = connection.select_one(
               "SELECT #{c.name} FROM #{self.class.table_name} WHERE #{self.class.primary_key} = #{quote_value(id)}",