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IDS Forum

RE: which data migration tool to use?

Posted By:
Date:

If databases are not big and each database is not spread on different
dbspaces, then I would suggest simple dbexport (without -ss)/dbimport.

All tables are created with single extent for each table with simple
dbimport option. If -ss option used, it creates using existing table extent
sizes.

thanks
Ravi Yarlagadda

-----Original Message-----
From: Kheng Siang.... [mailto:ks_hor1@yahoo.com]
Sent: Tuesday, March 11, 2003 10:07 PM
To: ids@iiug.org
Subject: RE: which data migration tool to use? [653]


Hi Keith,

My source machine is HP-UX 10.20 (32bit) running IDS
7.30.

My target machine is HP-UX 11.00 (64bit) running IDS
7.31.

IDS 7.31 cannot be installed in hpux 10.2 and vice
versa. So the suggestion of installing 2 version in
one machine will not work.

Obviously I tried to using ontape but it failed, error
message is ".... unable to fork server connection ..."
I guest ontape is not a suggested way to go and it is
dangerous.

So I give up and will try using dbimport and dbexport
with -ss option. I've requested my administratio to
add a big harddisk for the staging area for unloading
.unl files.

Kheng

--- "Simmons, Keith" <keith.simmons@bbslimited.co.uk>
wrote:
> Kheng
>
> What are your source are target machine and O/S?
> The easiest way is to install a copy of 7.30 on you
> target machine, restore
> an archive into it then shut the engine down.
> Install 7.31 over the 7.30 and
> start the engine again. Informix will take care of
> all structure conversions
> and all you will need to do is to update statistics.
> There is a bit of dependency here on having
> compatible tape drives and being
> able to get 7.30 for your new machine. (you could
> try migrating on the old
> machine and then restoring an archive to the new).
>
> Incidentally which sub-version of 7.31 are you using
> as there are some
> show-stopping bugs and 'need to knows' in some
> sub-versions.
>
> Keith
>
> -> -----Original Message-----
> -> From: Kheng Siang.... [mailto:ks_hor1@yahoo.com]
> -> Sent: Monday, March 10, 2003 4:38 PM
> -> To: ids@iiug.org
> -> Subject: which data migration tool to use? [636]
> ->
> ->
> -> Hi,
> ->
> -> I am planning to migrate my IDS from version 7.30
> to
> -> 7.31.
> ->
> -> I have setup the same instance name and dbspace
> name
> -> and chunk softlink in the target machine.
> ->
> -> Can someone advice me on which tool is easiest
> best
> -> used to migrate the data from 7.30 to 7.31
> version
> -> without hassle of loading or unloading individual
> -> tables?
> ->
> -> Can ontape restore the data from older version to
> -> later version?
> ->
> -> Pls recommend me an appropriate tool that offers
> -> hassle free migration. Many thanks.
> ->
> -> Kheng
> ->
> ->
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