Just cherry-pick f51ddc39637bc259bf4293a9c90622fe63f39e3c to master and tested with Oracle enhanced adapter, it passes successfully.

```ruby
$ ARCONN=oracle ruby -Itest test/cases/migration/column_attributes_test.rb -n test_native_types
Using oracle
Run options: -n test_native_types --seed 31832

# Running:

.

Finished in 0.215049s, 4.6501 runs/s, 65.1015 assertions/s.

1 runs, 14 assertions, 0 failures, 0 errors, 0 skips
$
```