HOT BACKUP

set your archive log on

SQL> shutdown abort ;

SQL> startup mount;

SQL>alter database archivelog;

you got an  error cose  we use shutdown abort so never use shutdown abort if u wanna set archive log
SQL>shutdown immediate ;

SQL>startup mount ;

SQL >alter database archivelog;

SQL>alter database open;

SQL>alter system switch logfile;

SQL>exit

SQL>rman target/

RMAN> backup database plus archivelog;


done

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Restore database 

SQL >  SHUTDOWN

SQL > EXIT

C:/>RMAN TARGET /

RMAN>   ALTER DATABASE  NOMOUNT ;

RMAN>  RESTORE CONTROLFILE FROM  'D:\BACKUP\C-33354'

** 'D:\BACKUP\C-33354' this is the path where u store ur backup .and C-33354 this the controll file use ur contoll file name .

controll file name always start with 'c-'

RMAN>ALTER DATABASE MOUNT ;

RMAN>RESTORE DATABASE;

RMAN> RECOVER DATABASE;

RMAN>ALTER DATABASE OPEN RESETLOGS;

any mistake is there or u wanna give any suggestion so please write to me ............