Oracle - Enable Record History in OAF

1. Set FND: Record History Enabled Profile Option to Yes at Site level
2. Set Personalize Self-Service Defn Profile Option to Yes at User level
3. Set FND: Personalization Region Link Enabled Profile Option to Yes at User level

4. Click on Personalize Page

5. Click on Edit

6. Find Record History Enabled and set to true at the desired level

See more details here.