RE: Hot Backup Issue

From: Rajesh Dayal <Rajesh_at_ohitelecom.com>
Date: Tue, 02 Oct 2001 22:20:26 -0700
Message-ID: <F001.0039FEFC.20011002220519@fatcity.com>

I think, I need to answer this original post( late, because our time zone is different ;-))

I was doing this in the test environment ( which I mentioned in my original post too) with total database size of 250 Mb. To make the testing easier I had adopted some random method. At that point of time I didn't care whether I choose method 1 or method 2 ( described below). My motive was to design and document a full proof method for recovery from Hotbackup in case of any kind of failure. Somehow I was missing the clue in one of the test cases and I posted the query describing my original steps honestly....

BTW I am aware of consequences of putting all the TS ( of Production environment) in backup mode in one stretch for hot backup purpose. Any-way, I thank everybody for contributing.

Thanks again everybody,
Rajesh

-----Original Message-----
Sent: Tuesday, October 02, 2001 3:15 PM
To: Multiple recipients of list ORACLE-L

Hello,

Slightly unrelated question... is it better to (in pseudo code) :

for each tablespace loop

put tablespace in backup mode
end loop

for each datafile in the database loop

copy data file
end loop

for each tablespace loop

put tablespace in normal mode
end loop

or 2)

for each tablespace loop

        put tablespace in backup mode
        for each datafile in this tablespace loop
                copy data file
        end loop
        put tablespace in normal mode

end loop

What I'm doing is (2), but I notice that Rajesh is doing (1). What are the pros and cons of each approach? (I'll probably use RMAN at some point, anyway :0) ).

Cheers,

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Author: Rajesh Dayal
INET: Rajesh_at_ohitelecom.com

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