RE: can RMAN restore from zip file

From: <tristan.van.essen_at_accenture.com>
Date: Fri, 11 Aug 2006 10:51:06 +0200
Message-ID: <34634BDF4BFC37419B8214EC0FE4435401E1DDA3@EMEXM1108.dir.svc.accenture.com>

>Speaking of writing to DVD, there are rumors of blue ray units, capable
>of writing 50GB? Has anybody here seen or heard anything like that?

How about the Wikipedia entry: http://en.wikipedia.org/wiki/Blu-ray_Disc

Seems like a very detailed article. Could be interesting; thanks for pointing that out Mladen.

Cheers,
Tristan

Tristan van Essen
Accenture Technology Solutions AG
Baslerstrasse 60
CH-8048 Zürich
Office: +41 44 405 3245
Mobile: +41 79 654 0592
Email: tristan.van.essen_at_accenture.com
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Mladen Gogala Sent: Donnerstag, 10. August 2006 17:03
To: mccdba1_at_yahoo.com
Cc: oracle-l_at_freelists.org
Subject: Re: can RMAN restore from zip file

On 08/10/2006 10:32:06 AM, dba1 mcc wrote:

> 1. does "gzip" will hurt RMAN backup data or not?

The "gzip" and other Lempel-Zev compression programs are known as "lossless compression". They do not lose data. Whatever is that you gzip will be exactly the same when you gunzip it. For as long as you don't turn your backup into an MP3, MPEG or AVI file, you'll be just fine.

>
> 2. if I "gunzip" RMAN backup, can it restore without
> ANY problem?

Yes, it can restore it without a problem, but be aware that gunzip takes time. You are, essentially, trading your disk space for your CPU power. In my opinion, writing the backup to an offline media like tape or DVD would be much smarter, as CPU power is usually more expensive then the disk space.

-- 
Mladen Gogala
http://www.mgogala.com

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Received on Fri Aug 11 2006 - 03:51:06 CDT