Re: Adding datafiles to the newly built database after restore from Prod
- From: Guillermo Alan Bort <cicciuxdba@xxxxxxxxx>
- To: pythianbrinsmead@xxxxxxxxx
- Date: Tue, 17 May 2011 11:05:13 -0300
Mark, I think I could hug you (not likely to happen, but I really liked your
comment) ... oh, and "cold backups" (shutting down the database and using a
OS tool to copy the database files) were backups in the 8i days... now they
are just cold copies as they in no way guarantee recoverability (they didn't
use to either but honestly, neither did rman...).... they are right there
along the export in the "ways people who used to manage oracle 7 and now are
managers and haven't touched an actual database in 15 years think database
backup need to happen category". Since 9i there is no excuse not to use
RMAN, even to disk, hell you even have a nice way to take an offline backup
with RMAN which will guarantee you have everything you need if you don't
want to have the database in archvielog.
In any case, more to this problem, if you have flashback logs or rman
backups you could try flashback database to before resetlogs, adding the
missing datafiles and doing the resetlogs operation again, but you'd loose
any changes since the original resetlogs...
Oh, and RMAN has a neat duplicate function that can help you in creating
sandboxes for developers and QA. We've been using that for some time and it
works pretty well once you work out a few kinks.
Disclaimer: No, I don't work for the RMAN marketing department... I've just
had to recover way too many poorly backed up databases and know the value of
a good backup.
Cheers
Alan.-
On Mon, May 16, 2011 at 9:32 PM, Mark Brinsmead
<pythianbrinsmead@xxxxxxxxx>wrote:
> does a solution exist for this problem?
>
> yes.
>
> RMAN. :-)
>
> it is too late for RMAN to help you on this recovery, but in the
> "lessons learned" category, it may be a good time to suggest using
> rman to manage your backups and recoveries going forward. the problem
> you face now could have easily been avoided with rman.
>
>
> On Monday, May 16, 2011, Andy Klock <andy@xxxxxxxxxxxxxxx> wrote:
> > The resetlogs was the problem with your data file restore. If this is
> enterprise edition you can do a tablespace point in time recovery or if
> standard you could have possibly done a datapump export of the
> tablespace(s).
> >
> >
> >
> > On Mon, May 16, 2011 at 2:39 AM, nilesh kumar <nileshkum@xxxxxxxxx>
> wrote:
> >
> > Hello All,
> >
> > Good Morning/Afternoon,
> >
> > Hope every one is doing a good job!!
> >
> > I had a problem yesterday,
> >
> > OS:- SOLARIS
> > database version:- ORACLE 10G (10.2.0.4)
> >
> > Task assigned to me was:- To create a replica of the Production database
> from the cold backup to a test server, which could be used for application
> team as testing database.
> >
> > we have the backup taken using Netbackup, backup team missed to restore 3
> file from the cold backup, I assumed all the files are restored and i
> created the control file from all the files backup team restored to test
> server(expect 3 files). database was opened using resetlogs and I also
> changed the dbid of the database and database name too. After 2 0r 3 days,
> application team complained that we see 3 datafiles are offline.
> > When i checked, I could see the zero kb files in the oracle home with the
> name being as ($ORACLE_HOME/missingfileid).
> > I asked the BUR to restore the 3 files they had missed so that i will try
> to rename and do a recovery, but was not able to do. It prompted that
> database id mis-match error.
> > Finally I needed to clear all the files and ask the BUR team to restore
> from start and was able to build the DB.
> >
> > Do any solution exists for the above problem without doing a full
> restore again. Kindly advise.
> >
> > Waiting for your reply.
> >
> > Thanks
> > Nilesh
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
> --
> Cheers,
> -- Mark Brinsmead
> Senior DBA,
> The Pythian Group
> http://www.pythian.com/blogs
> --
> //www.freelists.org/webpage/oracle-l
>
>
>
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