Re[2]: tbload
Posted in 1998
Jeff,
You can't use tbunload/onunload across versions. The data structures
are usually different. Dbexport can use less space if the database is
not full eg: you have allocated 10 gb of dbspaces and only have 1 row
in the database.
Regards
David Ashby
______________________________ Reply Separator _________________________________
Subject: Re: tbload
Author: <jeffso@lucent.com> at WCA-INET
Date: 24/6/98 2:56 PM
Nils.Myklebust@nmdata.com wrote:
I think this is incorrect.
Bbexport requires much more disk/tape space than tbunload. I suspect that
you made mistake in specifing the tape size.
BTW, check the informix version again. I had an experience that the unload
failed when I try to move the data between 7.23UC1 and 7.23UC5.
>
> On Wed, 24 Jun 1998 15:39:09 +0300, "Ants" <insight@shabakah.com>
> wrote:
>
> >
> >Hi,
> >
> >I have tried to tbunload a database from one server and tbload it to another
> >server. The process failed due to insufficient space. But when I do dbexport
> >and import it works.
> >
> >The only different between the two servers are phy log size, one is 2000K
> >and the other is 3000K, is that the problem or what????
> >
> >Informix online 5.05
> >AIX 3.2.5
>
> When you do tbunload binary data is written to diskfiles as it's
> stored in the database. When you use dbexport ascii data is written
> with variable field length and a delimiter between the fields. This
> format apperantly requires less space than the original binary data in
> the database (not uncommon). The physical log isn't involved in any of
> this at all.
>
--
Jeff So
Office : 973-3868839
Email : jeffso@lucent.com