oracle backup

backup control file :
SQL> alter database backup controlfile to trace;
it will generate sid_ora_XXXX.trc at "C:\oracle\product\10.2.0\admin\orcl\udump"

backup tablespace and datafile file:
SQL> spool c:\work_dump/spoolback.txt
SQL> select * from dba_tablespaces;
SQL> select * from dba_data_files;
SQL> spool off;
SQL> exit

DB dump :
C:\Documents and Settings\Administrator>exp system/oracle full=y file="c:/work_d
ump/joseph_'yourDate'.dump" statistics=none inctype=complete
in Linux 'yourDate' can be "date+%Y%m%d%H%M%S"

So we have three file and backup it up to another disk !