RMAN-20201

Question

Hi All,
info: RHEL 5 and 10.2.0.4
Im attempting to restore a DB onto a test machine from a backup taken of production. we use a recovery catalog and a list backup with tag command shows the backupsets as available.
I started the restore onto the test machine and while it was running one of the tablespaces was dropped from the production machine. the restore attempt failed saying it cant locate a copy of a few datafiles to restore (all from the same peice), but leave this aside for the moment. I made sure the peice is there and that oracle can read from it (again list backup with tag finds the peice ).
As i try to restart the restore it now fails with the error:
RMAN-06004: ORACLE error from recovery catalog database: RMAN-20201: datafile not found in the recovery catalog
RMAN-06010: error while looking up datafile: 380
the file 380 is the first file it came to in the set newname commands from the tablespace that no longer exists.
my question is first why does it say the file not found now when it did exist in the backup im using to restore (in fact the first restore attempt successfully restored most of the files in that tablespace before it failed to find different files and halted the restore). second is how do i get around this now (i want all the files restored from the backup im using; which contains the now dropped tablespace)
if this is unclear just let me know and ill attempt to explain it further.
thanks,
Dave

Answer 1

as oracle OS user:
rman target / catalog rman/xxx@rmancat
from rman prompt:
@restore.sql
restore.sql file is this:
spool log to restore.log;
run {
set newname for datafile 158 to '<test server path here with file name>';
set newname for datafile 310 to '<test server path here with file name>';
..... (few hundred of these)
restore database from tag '<tag name here>';
switch datafile all;
after this was done i planned to manually recover DB to the first consistent point possible.