RE: OCP Question
- From: "Newman, Christopher" <cjnewman@xxxxxxxxxxxxx>
- To: <wblanchard@xxxxxxxxxxxxxxxxxxxx>, <bill@xxxxxxxxxxxx>, "Oracle-L@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 16 Dec 2009 14:07:12 -0600
We saw this once on a standby database; the primary was recreated with
different datafiles, then the standby was created, but had existing files
already on disk.
To make this more clear:
1) Primary recreated and reorganized so that it contained less datafiles, ie
SALES01.dbf, SALES02.dbf instead of SALES01-10.dbf's.
2) Standby was recreated. The existing datafiles weren't removed, they were
merely overwritten (and there would be extras in this case, IE SALES03-10.dbf).
With dataguard, automatic file management set up. So:
1) Add SALES03.dbf to the primary as the need arises.
2) SALES03.dbf physical file already exists on the standby, albeit not
associated with the database. Because the file exists on disk however, it is
not overwritten and you get Oracle renaming the file with the MISSING issue.
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of Blanchard, William
Sent: Wed 12/16/2009 2:02 PM
To: bill@xxxxxxxxxxxx; Oracle-L@xxxxxxxxxxxxx
Subject: RE: OCP Question
I believe this is because the controlfile can't find the file (someone
correct me if I'm wrong). I would check the path and ensure that the
controlfile is pointing to the correct location.
WGB
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Zakrzewski
Sent: Wednesday, December 16, 2009 1:58 PM
To: Oracle-L@xxxxxxxxxxxxx
Subject: OCP Question
Listers -
I took the Oracle 10g OCP exam and one question in the exam was
something I have not come across in several years working with Oracle.
I searched google, but only found someone has had this happen, but they
didn't understand why - it was during a database cloning process.
It went something like - You rebuild your controlfile and open your
database and discover several datafiles have been renamed to
/somepath/MISSING##### (where ##### is a 5-digit number).
What might that signify?
A. Those are corrupt files?
B. Those are read-only tablespace files?
C. .....
D. .....
E. .....
I don't remember the five choices, but does anyone know why Oracle would
rename datafiles to .....MISSING#####.
Thanks
Bill--
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