Oracle version is 11g Release 220.127.116.11.0 - 64bit Production
and the server operation system is CentOS release 6.4
From you post is not clear:
- Do you use ASM or not ?
- Do you use some volume manager (LVM for example) or not ?
- How many disk you currently use? How file systems disribute betwen disks?
- What size of database ?
In case datafiles located on FS, you can:
- Stop Oracle database
- copy/move datafiles on new disk
- remount new disk on original place. So path to files not changed.
- start Oracle.
ASM have own procedure for redistribute data.