Move Oracle controlfile from filesystem to ASM

1. Find out controlfile locations:

Please note another copy of controlfile is already on ASM, +FRA diskgroup. We are moving the first one.

SQL> show parameter control_files

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
control_files			     string	 /u01/app/oracle/oradata/PRSH01
						 /control01.ctl, +FRA/PRSH01/co
						 ntrol02.ctl

2. Place database into nomount mode using RMAN and copy controlfile to new location:

$ rman target /

RMAN> startup nomount;
RMAN> restore controlfile to '+DATA' from '/u01/app/oracle/oradata/PRSH01/control01.ctl';

3. Note the name assigned to the controlfile:

[grid@prsh01 ~]$ asmcmd find --type CONTROLFILE +data *
+data/PRSH01/CONTROLFILE/current.261.1122675497

4. Modify the parameter from sqlplus:

SQL> alter system set control_files='+data/PRSH01/CONTROLFILE/current.261.1122675497','+FRA/PRSH01/control02.ctl' scope=spfile;

5. Restart database

SQL> shutdown immediate;
SQL> startup

6. Double check new location

SQL> show parameter control_files

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
control_files			     string	 +DATA/PRSH01/CONTROLFILE/curre
						 nt.261.1122675497, +FRA/PRSH01
						 /control02.ctl