Windows Server and Oracle 8 Client

I have been using UrBackup Windows Server for a long time and it works very well with Windows clients. Now i would like to do a test with an Oracle Linux 8 client (on Windows UrBackup server) and i would like to know how to do it step by step because i just can’t perform backups after several attempts and installations. The Oracle client is seen correctly but the backups do not start.
For testing i have disabled all firewalls