1. Get the current location of the control file.
SQL> select name from v$controlfile;
NAME
--------------------------------------------------------------------------------
/u02/MJBDB/oradata/mjb_ctl01.ctl
/u03/MJBDB/oradata/mjb_ctl02.ctl
/u04/MJBDB/oradata/mjb_ctl03.ctl

In order to rename or move these files we must alter the value of the control_files  instance parameter.
SQL> show parameter control_files;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
control_files                        string      /u02/MJBDB/oradata/mjb_ctl
                                                 01.ctl, /u03/MJBDB/oradata/
                                                 mjb_ctl02.ctl, /u04/MJBDB/
                                                 oradata/mjb_ctl03.ctl

To move or rename a controlfile do the following:

* Alter the control_files parameter using the ALTER SYSTEM comamnd.
* Shutdown the database.
* Rename the physical file on the OS.
* Start the database.
                                                

SQL> ALTER SYSTEM SET control_files='/u02/MJBDB/oradata/rename_mjb_ctl01.ctl', '/u03/MJBDB/oradata/mjb_ctl02.ctl','/u04/MJBDB/oradata/mjb_ctl03.ctl' SCOPE=SPFILE;

System altered.

SQL> SHUTDOWN IMMEDIATE
Database closed.
Database dismounted.
ORACLE instance shut down.

SQL> HOST mv /u02/MJBDB/oradata/mjb_ctl01.ctl /u02/MJBDB/oradata/rename_mjb_ctl01.ctl

SQL> STARTUP
ORACLE instance started.

Total System Global Area  167772160 bytes
Fixed Size                   787968 bytes
Variable Size              61864448 bytes
Database Buffers          104857600 bytes
Redo Buffers                 262144 bytes
Database mounted.
SQL>

SQL> select name from v$controlfile;
NAME
--------------------------------------------------------------------------------
/u02/MJBDB/oradata/rename_mjb_ctl01.ctl
/u03/MJBDB/oradata/mjb_ctl02.ctl
/u04/MJBDB/oradata/mjb_ctl03.ctl

Recreating the Controlfile

SQL> CONN sys/password AS SYSDBA
Connected.
SQL> ALTER DATABASE BACKUP CONTROLFILE TO TRACE;

Database altered.

SQL>
The resulting trace file in the user_dump_dest directory contains commands and instructions for recreating the controlfile. The paths in the CREATE CONTROLFILE command can be manipulated to rename all datafiles and logfiles on one step.