I was bitten but this badly and thanks to all those people who
helped me. This may some of you, so I'm posting it.
Scenario:
I wanted to extract one table as of a time the previous day. So I decided
to recover to the closest time as possible before the unwanted change
was made.
This meant that I only wanted two application tablespaces (data and
index) out of many.
As I was told its possible, I assumed it would be OK if I went with the
basics - system TS data files, RBS (3 out of 4 files), the datafiles of the
application TS's and even member of each redo-logs group .
I recreated the control file, did the recovery to the point in time and
opened it.
Now when I did a select on any object, I was hit with the following:
ORA-00604: error occurred at recursive SQL level 1
ORA-00376: file 2 cannot be read at this time
ORA-01111: name for data file 2 is unknown - rename to correct file
ORA-01110: data file 2: '/emc/vol1/oracle/product/8.1.6/dbs/MISSING00002'
I tried recovering again with all the RBS files as the last one also had
online
public rollback segments.
That also didn't help and file2 was constantly being a pain - checking
dba_data_files showed that it was belonging to the TOOLS tablespace.
On closer examination I discovered it had 237 SYS and SYSTEM
objects.
Another DBA must have loaded these objects in TOOLS t/s.
Recovering DB with tools and the other essentials resolved the problem.
So, watch out for this in the future.
Kumanan Balasundaram
Database Administrator, IT
QXL ricardo plc
www.qxl.com
P: +44 (0)208 962 7409
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