Qing busy, bug update modifies the speed seems very slow, there is an issue, has been submitted.
Issue 1685
This issue was discussed here:
http://www.yiiframework.com/forum/index.php?/topic/7904-yii-1-1-1-oci-does-not-have-to-quote-names/page__p__39962__fromsearch__1#entry39962