[Koha] Tables used for Reading Record and Circulation History

Hi all, I am trying to figure out why I have no circulation history or reading record in Koha. I know I can access this info through the statistics table in mysql, my question is which other tables are involved, so I can check them. intranetreadinghistory is set to allow, as is the opacreadinghistory. Are there any other settings to turn on circulation history or reading record? Thanks, Marty