SQL> set autorecovery on
	
*  Enter auto when prompted for a redo log file:
	
		SQL>  recover datafile 4;
		ORA_00279:  change 308810 … 12/02/97 17:00:14 needed for thread 1
		ORA_00289:  sugestion : /disk1/archive/arch_34.rdo
		ORA_00280:  change 308810 for thread 1 is in sequence #35
		Specify log: (<RET>=suggested | filename | AUTO | CANCEL {
		AUTO
		Log applied.
	
	  Use the AUTOMATIC option of the recovery command:
	
		SQL> recover automatic datafile 4;
		Media recovery complete

To locate data files needing recovery, and where they need recovery from, use the V$RECOVER_FILE view.
	
SQL>  select * from v$recover_file;

To locate archived log files, view V$ARCHIVED_LOG for all archives or V$RECOVERY_LOG for archives needed during recovery:
SQL> select * from v$recovery_log;

SELECT name FROM v$datafile
           UNION
           SELECT name FROM v$controlfile
           UNION
           SELECT member FROM v$logfile;

If you want to move the files to another database, then you must shut down that instance and replace all datafiles,controlfiles,redo files,archived and your pfile(c:oracleadmininstancepfileinit.ora) once you have replaced these files then;
log on as sysdba, run this;
startup pfile='c:oracleadmininstancepfileinit.ora' 

also, it is a good idea to replace the password file,
c:oracleora90databaseyourpwfile