Restore steps if lost some data files?

Question

I lost some data files in database and I am not sure what datafiles are. But one think sure is the control and redo log files are here. For this case, I don't have to restore contronl files and archivelog files. Please correct me if my idea is wrong.
Steps as follows:
===========
restore database;
recover database;
alter database open;
Please advice if the steps are wrong.
FAN

Answer 1

Hi user623471!
Yes you don't have to restore control, redo log and archive log files in the case that they are not lost. To find out which datafiles are lost do the following steps:
<pre>
sqlplus / as sysdba
--Make a checkpoint
ALTER SYSTEM CHECKPOINT;
--query v$recover_file to see which files need recovery
SELECT file#, error, online_status, change#, time
FROM v$recover_file;
exit
</pre>
Now start rman an restore only the files shown by v$recover_file.
<pre>
rman target /
restore datafile x, y, z;
recover database;
sql 'alter database open';
exit;
</pre>
x, y and z are placeholders for the filenumbers shown by the file# column of v$recover_file.
Hope that helps!
yours sincerely