I started to play around with DBFS (Database Filesystem), a new interesting feature in Oracle 11.2.
There are some excellent guides on how to set it up:
But both of them had one "not very clean" part in them - compiling FUSE kernel driver from source. Actually this is not necessary and there are precompiled FUSE rpm packages available:
After RPM package is installed, you need to add the OS user who will mount the filesystem (for example oracle) to OS group fuse.
usermod -a -G fuse oracle