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IDS Forum

Re: Migrate from HP PA-RISC to HP ITANIUM by o....

Posted By: DL Redden
Date: Wednesday, 12 March 2008, at 3:51 p.m.

In Response To: Re: Migrate from HP PA-RISC to HP ITANIUM by o.... (Art S. Kagel (Oninit))

It's highly unfortunate that the personnel at IBM is giving out false information. If you can't trust a response from support then what good are they. This response prevented us from moving to the Itanium platform, had the response been accurate then we would most likely be on Itanium today.

----- Original Message ----
From: Art S. Kagel (Oninit) <art@oninit.com>
To: ids@iiug.org
Sent: Wednesday, March 12, 2008 10:01:17 AM
Subject: Re: Migrate from HP PA-RISC to HP ITANIUM by o.... [11585]

DL Redden wrote:

The person who answered your question was misinformed. The Intel
Itanium processor runs in Big-Endian mode specifically to match the
binary format of the PA-Risc platform and ease migration for its
customers. It was designed by HP with Intel for that purpose.

Art S. Kagel

> Last time I asked that question I was told that it couldn't be done on
HP-UX.
> I found my PMR (PMR 74170,500) and this is the response that I recieved.
>
> "The problem is that in numeric data Itanium (and in all Intel chips) stores
> the numbers in a format called Big Endian. What this means is that the MOST
> significant digit is stored LAST. So, if you had a hex value like so:
> 0x00000007 In Big-Endian that number would ACTUALLY be stored like so
> 0x07000000."
>
> I persisted a little and received this as a follow-up response.
>
> "The Itanium based HP is a different architecture than the RISC based HP.
They
> are not compatible. You will not be able to move data from one to the other
> without some sort of conversion. From Informix's standpoint the only way to
> move from one OS (or version IDS) to another is to use the dbexport/dbimport
> utilities. If there is some way to convert between Itanium and RISC on the
OS
> level, you will have to contact HP for instructions."
>
> This conversation took place on 4/20/2007 so it could be possible that IBM's
> stance has changed or that the person who answered my questions was not 100%
> informed on any caveats that might exist.
>
> DL
>
> ----- Original Message ----
> From: Art S. Kagel (Oninit) <art@oninit.com>
> To: ids@iiug.org
> Sent: Wednesday, March 12, 2008 8:53:08 AM
> Subject: Re: Migrate from HP PA-RISC to HP ITANIUM by o.... [11581]
>
> ZHAN YU LIN wrote:
>
> Call IBM Tech support to double check, but when this question was last
> asked here an IBMer stated that HPUX/PA-RISC and HPUX/Itanium was the
> only fully interoperational platforms that Informix supports and that
> such a port was possible.
>
> Art S. Kagel
> Oninit
>
>
>> I want to know if I can do a migration database'data from
>> HP PA-RISC to HP ITANIUM by ontape directly?With the identical version of
>> IDS on these two different platform. Thanks in advance.
>>
>>
>>
>

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