UNDOTBS - ERRORS DURING IMPORT

Question

Hi,
I have an Oracle 9i database running on a Linux box. It was running out of disk space (only 2GB free). I decided to create a new undotbs (UNDOTBS2), on a separate Disk (/usr/oracle/local/), because the original undotbs (/usr/oracle/data/UNDOTBS1) was quite big 3.7 GB!
I switched to the new undotbs(2), and Oracle was happy all day long. The thing is, I have a script that drops 2 schema during the night, recreates them and import data into these 2 schemas,from a dump file (another database).
This morning I noticed that the import process aborted (see error messages below),complaining that the UNDOTBS1 tablespace "couldn't be read at this time'. What is that mean?
The following are the steps I had to follow, to be able to import the data.
1. Move /usr/oracle/dataUNDOTBS1 to /usr/oracle/local/
(both TS are on the same directory).
2. Both TS are online.
3. Oracle is using UNDOTBS1.
I would like to get rid of one of these TS, but I afraid that by doing so, the nightly script will abort again.
Any ideas?! Thanks, Juvenal
-----ERROR MESSAGE BEGINS--------------------------------
Import: Release 9.2.0.3.0 - Production on Tue Feb 3 23:07:24 2004
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to: Oracle9i Release 9.2.0.3.0 - Production
JServer Release 9.2.0.3.0 - Production
Export file created by EXPORT:V09.02.00 via conventional path import done in US7ASCII character set and AL16UTF16 NCHAR character set import server uses WE8ISO8859P1 character set (possible charset conversion) . importing IBT's objects into IBT . importing IBT_SECURITY's objects into IBT_SECURITY . importing IBT's objects into IBT
. . importing table "ACCOUNT" 68795 rows imported
. . importing table "ACCOUNTING_BRANCH" 101 rows imported
. . importing table "ACCOUNTING_COMPANY" 80 rows imported
. . importing table "ADDRESS" 207761 rows imported
IMP-00017: following statement failed with ORACLE error 604: "CREATE UNIQUE INDEX "PK_ADDRESS" ON "ADDRESS" ("ADDR_ID" ) PCTFREE 10 INIT" "RANS 2 MAXTRANS 255 STORAGE(INITIAL 245760 FREELISTS 1 FREELIST GROUPS 1) TABLESPACE "IBT_INDEX" NOLOGGING"
IMP-00003: ORACLE error 604 encountered
ORA-00604: error occurred at recursive SQL level 1
ORA-00376: file 2 cannot be read at this time
ORA-01110: data file 2: '/usr/oracle/data/undotbs01.dbf'
IMP-00017: following statement failed with ORACLE error 604: "CREATE INDEX "IND_ADDR_SUB_ID" ON "ADDRESS" ("ADDR_SUB_ID" ) PCTFREE 10 IN" "ITRANS 2 MAXTRANS 255 STORAGE(INITIAL 245760 FREELISTS 1 FREELIST GROUPS 1)" " TABLESPACE "IBT_INDEX" NOLOGGING"
IMP-00003: ORACLE error 604 encountered
ORA-00604: error occurred at recursive SQL level 1
ORA-00376: file 2 cannot be read at this time
ORA-01110: data file 2: '/usr/oracle/data/undotbs01.dbf'
-----ERROR MESSAGE ENDS--------------------------------

Answer 1

I think the filesystem where the new datafile is does not have the correct permission to allow Oracle writes on it.
apply this command and reply the result:
ls -l /usr/oracle/data
the group has be "dba"
if you want to change the permission on that folder you have to do this connected as root:
chown oracle.dba /usr/oracle/data
Joel Pérez
http://otn.oracle.com/experts