I have all my datafiles spread across various HDD as per the requirement.
I want a job to be executed which will check the HDD space where in the tablespaces are placed.
The job would have a procedure which will execute to find the total disk space available on the disks where i have the datafiles spread.

I NEED TO KNOW IF THERE IS ANY PACKAGE OR IN BUILD PROCEDURE WHICH WILL FACILITATE ME IN GETTING THE DESIRED INFORMATION.