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RE: Samba and 10g - and NT - Solved - probably

From: Howard Latham <>
Date: Tue, 23 Nov 2004 10:27:34 -0000
Message-ID: <8BA4F739A97DFB4D9A10D92A25A77F750995EB@exchange-2003.rsmbdom2.local>

Ok we are going to upgrade our NT prod db to 10g then use rman to migrate to Linux Thanks Guys and Gals.


-----Original Message-----
[]On Behalf Of Howard Latham Sent: 23 November 2004 10:12
To: Carel-Jan Engel; Cc: Eric Buddelmeijer; Subject: RE: Samba and 10g - and NT

Yes it was the discussion in the tech forum. =20
1 the original database is running on nt everything hosted by nt. D1 2 D2 runns on nt but is hosted on Linux using SAMBA 3 Target is D3 all on Linux
I am exporting D1 the only populated database which will be imported to = D2
D1 is
D2 and D3 are 10g D2 is just a means of upgrading to 10g without = impacting D1
Cannot upgrade D1 as it is required prod database - well hang on maybe = we should=20

-----Original Message-----
From: Carel-Jan Engel [] Sent: 22 November 2004 19:27
Cc: Eric Buddelmeijer; Howard Latham; Subject: Re: Samba and 10g - and NT


This was the discussion during the tech forum session, wasn't it? Sorry = for not responding earlier, I was at a customer's site today.

First let's try to reconstruct the path you're following right now, and = define some constants to refer to during the rest of this thread:

The original database (I say: D1) is running on NT, with instance, = executables and data sitting nicely together on NT. You created a second database, named D2 for now. The instance of D2 runs = on NT, the database resides on a Linux box, using CIFS (Samba) for the = connectivity.
The final database (let's call it D3) will have it's instance on Linux, = as well as the datafiles.
You want to export D2. Purpose is importing the exportfile in D3.

D1 is
D3 will probably be
What version is D2? Did you upgrade D1 to 10 on NT? Or is it just a = copy on NT?

If it's 10g you don't need the export. You can transport the = tablespaces. If it's 9i you don't need the copy. You can export from D1.

BTW, I don't know whether accessing databasefiles through CIFS (and the = Samba implementation of it) is actually supposed to work. It's a long = time ago I created a database on some Windows platform, and I never had = database files accessed through a share. Maybe it is supported, but it = is not unlikely that you have to take care of some special Samba = configuration settings to run this. I'm not surprised if this causes = your export to fail.

During the discussion we came up with some possible scenarios, IIRC:

Upgrade D1 from 9i to 10g, on the NT box Create a D3 (10g) on Linux
Use the 10g capabilities for cross platform transportable tablespaces to = import the (upgraded) D1 tablespaces to D3

Create D3 on Linux (10g)
Export D1, eventually in several parts. You can export the 'static' data = (lookup tables, historical data) with some fine-grained export scripts, = using the proper where clauses, and import this in D3 Finally, during some downtime, you export the rest of the data from D1, = and import this in D3
This scenario requires no D2.

Where does this theoretical model meet your actual situation? If we = know, we might be able to help you further.

Best regards,

Carel-Jan Engel

If you think education is expensive, try ignorance. (Derek Bok) =3D=3D=3D =09

On Mon, 2004-11-22 at 17:45, Niall Litchfield wrote:=20

On Mon, 22 Nov 2004 15:47:28 +0100, Eric Buddelmeijer

<> wrote:

> The reason 10g came into play probably is because that is the version =

> supports OS transportability without export/import. Staying with 9.2 =

> IMHO the downtime to do the export/import.

I think that was why we ended up heading off in that direction.=20

I'm a bit intrigued though - because IIRC exp was dying on the NT box

anyway, I'm beginning to wonder about the integrity of the existing

database files, given this (maybe wayward) recollection and the

corrupt blocks you are getting doing it this way.


Received on Tue Nov 23 2004 - 04:27:58 CST

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