From https://www.reddit.com/r/wsl2/comments/p1b3jw/how_do_you_get_permission_to_drop_files_in_your/

Personally, I map a persistent drive to wsl like this: net use z: \\wsl$\Ubuntu-20.04 /persistent:yes

Now you can open file explorer on drive z: and navigate to your “/home/<userid>/ and create folders and write files anywhere under your home. 

View at Medium.com

https://manjaro.site/how-to-install-sqlplus-utility-on-ubuntu-18-04-and-ubuntu-18-10/