ORA-1110, ORA-1114, OSD-4002, O/S-Error: (OS 33) The Process Cannot Access The File
The error is specific to Windows platform, where the file is being accessed by another process, probably non-Oracle processes such as anti-virus, OS backup or something else. 

Make sure there is no other non-Oracle process accessing the data file #201 when you are running that procedure. 

Resolving ORA-27072 , OSD-04008 and O/S-Error: (OS 33) On Windows Platforms (Doc ID 2016620.1)

Update:

In order to find which application is using a specific file-


Download Handle from here, if you don't have already.
Extract the downloaded .zip file in your drive.
Run handle.exe &lt;path to your datafiles&gt; on command prompt.