What to do with off line datafile?

Question

Hi,
On prod db (9.2) with still space in ts I created a new data file. (There were 5 other files here).
Realized it's named incorrectly I placed the data file immediately off line.
Currently the status is: "Needs Recovery" (db is running in arch log mode).
I'm wondering what are my options dealing with the situation?
(We don't use Oracle Managed Files option).
The db is 24/7 the ts is an index ts (12 GB).
Are there any perils of keeping the file off line for the future?
What could be done with data file off line:
-Can I move it?
-Resize it?
-Rename ?
Is there a way to recover w/o placing the ts off line?
Any suggestions are highly appreciated!
Thx,
Dobby

Answer 1

You can bring it easily online:
[email protected]> select file_name from dba_data_files where tablespace_name = 'RECOVERY_TEST'
2 /
FILE_NAME
C:\ORACLE\ORADATA\MOB92\RECOVERY_TEST01.DBF
C:\ORACLE\ORADATA\MOB92\RECOVERY_TEST02.DBF
[email protected]> alter database datafile 'C:\ORACLE\ORADATA\MOB92\RECOVERY_TEST02.DBF' offline;
Database altered.
[email protected]> create table semp tablespace RECOVERY_TEST as select * from scott.emp;
Table created.
[email protected]> select * from v$recover_file;
FILE# ONLINE ONLINE_ ERROR CHANGE# TIME
13 OFFLINE OFFLINE 71930663 03-SEP-06
This will not suceed:
[email protected]> alter database datafile 'C:\ORACLE\ORADATA\MOB92\RECOVERY_TEST02.DBF' online;
alter database datafile 'C:\ORACLE\ORADATA\MOB92\RECOVERY_TEST02.DBF' online
ERROR at line 1:
ORA-01113: file 13 needs media recovery
ORA-01110: data file 13: 'C:\ORACLE\ORADATA\MOB92\RECOVERY_TEST02.DBF'
Here you recover datafile:
[email protected]> recover datafile 13;
Media recovery complete.
and now you can place it online:
[email protected]> alter database datafile 'C:\ORACLE\ORADATA\MOB92\RECOVERY_TEST02.DBF' online;
Database altered.
[email protected]> select * from v$recover_file;
no rows selected
Best regards
Krystian Zieja / mob