this only depends on the disk space available on the CAPS device and on the limits of the database size of the used database (MS SQL Server Edition / Oracle Database Edition) - there should be no hard limit.
Are you facing any issues?
The latest list of supported database can be found in the Oracle® Hospitality Simphony Configuration Guide Release 18.2, so you will be able to lookup the product specific limitations on the vendor pages.
Hope this helps!
Oracle Senior Consultant Presales Hospitality
Thank you for your response. There is no issue; a prospective customer had this question in our presentation and we were looking for confirmation. This will be on-premise Simphony on Oracle.