Re: PreCreate Oracle Tables
- From: JApplewhite@xxxxxxxxxxxxxxxxxxxx
- To: oracle-l@xxxxxxxxxxxxx
- Date: Thu, 19 Feb 2004 07:38:41 -0600
When needing to change some parameter or other, I do an export with rows=n
and then bring the *.dmp file up in my editor and select the lines I want
to change. It's much easier than messing with the badly formatted
indexfile. In fact, I use the norows *.dmp to do things like capture and
create sequences, grants, etc. - stuff that you can't get from the
indexfile. Oh, my editor is the ancient Kedit (Mansfield Software), a
knockoff of IBM's Xedit. I've used it on DOS, OS/2, and Windows for about
20 years now - couldn't do without it.
Jack C. Applewhite - Database Administrator
Austin (Texas) Independent School District
512.414.9715 (wk)
512.935.5929 (pager)
May have come a long way, but we got a long way to go.
-- B.W. Stevenson
"Gene Sais" <Gsais@xxxxxxxxxxxxxxxxxxx>
Sent by: oracle-l-bounce@xxxxxxxxxxxxx
02/18/2004 02:46 PM
Please respond to oracle-l
To: <oracle-l@xxxxxxxxxxxxx>
cc:
Subject: Re: PreCreate Oracle Tables
Thank you for your response. I forgot to mention, its not an exact
copy. I need to move some tables, indexes, change storage, and exclude
one schema. I do like option #5, can never test backup/recovery enough!
But, if you had to choose 2 or 3, which would you choose?
>>> Daniel.Fink@xxxxxxx 2/18/2004 3:34:09 PM >>>
Don't forget option 5) Use a backup from production and perform a full
recovery. It not only creates the database, it tests your production
backups and refreshes your recovery skills.
If there are not any changes to the db, I like 4 as it is very quick
and
painless.
Gene Sais wrote:
> When copying a database, what are the best practices?
>
> 1) I typically, perform a full export from db A, create db B, import
> dump from A into B.
>
> 2) Same as 1, but precreate tables with indexfile and then import
> ignore=y.
>
> 3) Same as 1, but precreate tables with dynamic sql (create table
emp
> as select * from emp@dblink where 1=2), then import ignore=y.
>
> 4) Copy datafiles, recreate controlfile and rename db.
>
> I am looking to precreate the objects before importing the data and
in
> the past, I have used #2, but #3 is more flexible and requires no
> editing of indexfile.
>
> Are they any disadvantages of using #3 from #2?
>
> Thanks,
> Gene
>
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