all attributes serialized before writing

lib/active_record/connection_adapters/oracle_enhanced/database_statements.rb

@@ -255,11 +255,9 @@ def write_lobs(table_name, klass, attributes, columns) #:nodoc:
             value = attributes[col.name]
             # changed sequence of next two lines - should check if value is nil before converting to yaml
             next unless value
-            if klass.attribute_types[col.name].is_a? Type::Serialized
-              value = klass.attribute_types[col.name].serialize(value)
-              # value can be nil after serialization because ActiveRecord serializes [] and {} as nil
-              next unless value
-            end
+            value = klass.attribute_types[col.name].serialize(value)
+            # value can be nil after serialization because ActiveRecord serializes [] and {} as nil
+            next unless value
             uncached do
               unless lob_record = select_one(sql = <<~SQL.squish, "Writable Large Object")
                 SELECT #{quote_column_name(col.name)} FROM #{quote_table_name(table_name)}