Oracle RMAN Question:

SQL>set head off
SQL>spool beginbackup.sql
SQL>select 'alter tablespace ' tablespace_name ' begin backup;' from dba_tablespaces;
SQL>spool off

This will create file beginbackup.sql with entry for all tablespaces, remove any unnecessary lines & then execute this script into SQL like

SQL>@beginbackup.sql

(Once you execute this script this will put all tablespaces in to begin backup mode)

Now create backup of your control file in Human Readable format like

alter database backup controlfile to trace as '/some/path';

You can reuse it by removing comment at beginning & replace them with connect / as sysdba
Then Copy all your datafiles, redo logs and control file from your database server to backup location.
After datafiles are copied don't forget to end backup for all tablespace
Here is the scripts
SQL>set head off
SQL>spool endbackup.sql
SQL>select 'alter tablespace ' tablespace_name ' end backup;' from dba_tablespaces;
SQL>spool off


This will create file endbackup.sql with entry for all tablespaces, remove any unnecessary lines & then execute this script into SQL like

SQL>@endbackup.sql

(Once you execute this script this will put all tablespaces in to end backup mode)