Following are the Good Free Web Version where we can run the SQL against the Cloud. I hope this will be very useful as there is no Limit to Rows for Extraction and this has very good Featuring to Extract in CSV or XLSX format.

https://www.datafusing.com/CloudSQL/

https://jl1yzdgazcviono-db1.adb.uk-london-1.oraclecloudapps.com/ords/r/dev/cloudsql/worksheet?session=14983791236158

This is Paid One if you need More Security at Enterprise Level

SQLConnect - An Oracle Cloud Tool by SplashBI!