We have a oracle 12.1.0.2 installation on Linux, we have a procedure that read files from a folder, process data and writes file to another folder, and we have all permission required on the folder, so it works up to this point. The problem arise when we try to remove the source file from the starting folder, because the database user has all the the rights on the folder but not on the specific file! Users and suppliers can upload file in this folder via ftp and we couldn't find way to replicate folder permission, I attach a couple of screenshots, please help.
Oracle error is ORA-29283: Invalid file operation Folder Rights