Rename or Move the datafile

1)Make the tablespace offline 

 alter tablespace  offline;

2)MV the all the datafile to new location or rename them 

3)Run the command 

alter database rename file 'C:\ORACLE\DBI\ORADATA\SIT01\test01.dbf' to 'C:\ORACLE\DBI\ORADATA\SIT01\redo\test01.dbf'