Following are steps to move a datafile from one ASM diskgroup to another diskgroup in the same ASM instance:
For this example, let's suppose the full path of datafile to be moved is +DATA/test/datafile/test.22.121357823 and datafile number is 11.
Step 1: From RMAN, put datafile 11 offline:
SQL "ALTER DATABASE DATAFILE ''+DATA/test/datafile/test.22.121357823'' OFFLINE";
Step 2: Backup Datafile 11 to Copy using RMAN:
$ rman target /
BACKUP AS COPY DATAFILE 11 FORMAT '+DATA_NEW';
--- Make note the path and name of the generated datafile copy.
Step 3: From RMAN, switch datafile 11 to copy:
SWITCH DATAFILE "+DATA/test/datafile/test.22.121357823" TO COPY;
Step 4: From RMAN, Recover Datafile 11:
RECOVER DATAFILE 11;
Step 5: From RMAN, put datafiles online:
SQL "ALTER DATABASE DATAFILE ''+DATA_NEW/'' ONLINE";
Step 6: From SQLPlus, verify if datafile 11 was correctly switched and was online:
sqlplus / as sysdba
SQL> select file_id,file_name,online_status from dba_data_files where file_id in (11);
For this example, let's suppose the full path of datafile to be moved is +DATA/test/datafile/test.22.121357823 and datafile number is 11.
Step 1: From RMAN, put datafile 11 offline:
SQL "ALTER DATABASE DATAFILE ''+DATA/test/datafile/test.22.121357823'' OFFLINE";
Step 2: Backup Datafile 11 to Copy using RMAN:
$ rman target /
BACKUP AS COPY DATAFILE 11 FORMAT '+DATA_NEW';
--- Make note the path and name of the generated datafile copy.
Step 3: From RMAN, switch datafile 11 to copy:
SWITCH DATAFILE "+DATA/test/datafile/test.22.121357823" TO COPY;
Step 4: From RMAN, Recover Datafile 11:
RECOVER DATAFILE 11;
Step 5: From RMAN, put datafiles online:
SQL "ALTER DATABASE DATAFILE ''+DATA_NEW/
Step 6: From SQLPlus, verify if datafile 11 was correctly switched and was online:
sqlplus / as sysdba
SQL> select file_id,file_name,online_status from dba_data_files where file_id in (11);
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