Problem moving datafiles

Question

I've moved some datafiles while my database was open using the alter tablespace offline, then the OS mv command. Now when I try to bring the tablespace back online, I get:
ORA-01157: cannot identify/lock data file 13 - see DBWR trace file
ORA-01110: data file 13: '/db/oradata/dal00pi2/dpipe_upload_ind_seg.dbf'
ORA-27037: unable to obtain file status
SVR4 Error: 2: No such file or directory
ORA-01157: cannot identify/lock data file 26 - see DBWR trace file
ORA-01110: data file 26: '/db/oradata/dal00pi2/dpipe_upload_ind_seg02.dbf'
ORA-27037: unable to obtain file status
SVR4 Error: 2: No such file or directory
The dbfs appear to be in the new location, and of course using the mv command, they're not in the old location. How hosed am I?

Answer 1

Hi
I think you forget some step.
Step 2, must copy rather than move.
And step 3, notice the change to the control file.
1) Alter tablespace xxx offline;
2) Copy the affected datafiles to the new location, again, copy rather than move.
3) For each data file affected, alter tablespace xxx rename datafile <old filename> to <new filename>;
4) Alter tablespace xxx online;
5) Alter database backup controlfile to trace, because we have changed the structure of the database and must preserve it.
6) Delete the old datafiles from the old file system.