What is the Maximum numbers of rows in data table in CPQ

We have a requirement where we are trying to put 7.5 million records as initial load in Oracle CPQ data tables and incremental data will be uploaded periodically. When trying to add the 7.5 million records altogether by importing manually the upload fails without getting added to the logs and a simple message is displayed as 'An unknow error has occured'. And when trying to upload the 7.5 million records altogether through SFTP, we noticed in the CPQ logs that the has status as 'Failed' with reason being 'The data table upload failed, because the file uploaded is corrupted. There