Many systems use surrogate primary keys whose values are generated by Oracle sequences; these are typically integers. If, however, your table contains a column of type FLOAT that is a candidate primary key, the use of the column as the primary key should not cause any noticeable performance degradation. As always, your best bet is to verify through testing.
Dig Deeper on Oracle database performance problems and tuning
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.