The following are the Standard WHO Columns in most of the Oracle tables:
1. created_by
2. creation_date
3. last_update_date
4. last_updated_by
5. last_update_login
Usually while populating WHO columns, following values have to be used
Creation_date = SYSDATE
Created_by = fnd_profile.VALUE ('USER_ID')
Last_update_date = SYSDATE
Last_updated_by = fnd_profile.VALUE ('USER_ID')
Last_update_login = fnd_global.login_id
Request_id = fnd_global.conc_request_id
