IDS Forum

RE: Advantages/Disadvantages of Upgrading a 9.....

Posted By: Marcus Haarmann
Date: Monday, 9 October 2006, at 2:54 a.m.

In Response To: Re: Advantages/Disadvantages of Upgrading a 9.21 3 (Joel Schumacher)

Hi,

If you use IP to connect to your db, no changes of your clients should be
necessary. The only need to have client-side 64 bit code is in case you use
(and need to have) shared memory access. Otherwise, setting INFORMIXSERVER
to a TCP-Connection should do the trick and all your apps still work. It
should also be possible to install a clientsdk 32bit and server 64 bit on
the same machine (maybe in two different informix dirs).

Regarding unload/load, it should not be necessary (my personal opinion). We
have upgraded some databases in the past (I think it was 9.30) from 32 bit
to 64 bit. It was always in place, no problems encountered.
The only thing is when you upgrade from 9.40 from a lower version (e.g.
9.21), you will need plenty of space depending on your database size (we had
very many tables > 200000), because the internal structures are converted to
a different scheme during update. But this was not depending on the 32/64
issue. Read the upgrade notes for this and check back with your reseller.

Marcus

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of Joel
Schumacher
Sent: Thursday, October 05, 2006 6:21 PM
To: ids@iiug.org
Subject: Re: Advantages/Disadvantages of Upgrading a 9..... [7582]

I remember a few issues.

We're on sun/solaris and our default compiler compiles to 32-bit. So, we had
to modify the c4gl command to compile using the flag for 64-bit.

We have plenty of C and ESQL/C code. The 64-bit compiler on Solaris now sees
a long as a 64-bit, whereas it used to consider a long 32-bit with the
32-bit compiler. int types are still 32-bit.

So, we had to evaluate our use of "long" data types in our C code and ended
up changing many of them to int.

We still haven't upgraded our 4J's code to 64 bit. Our C functions behave
very mysteriously. It's probably the gcc compiler that 4Js requires. We just
haven't had the time to spend to go back and figure out the problem and
covert the application.

Clifton Bean (cbean@ctm.com) wrote :
> I seem to recall going through a 32-bit to 64-bit upgrade in my past
> 18 years using Informix; however, I do not recall any pain during this
process.
> Since I am getting a few (okay, a lot of) gray hairs, I thought I
> would ask the community a few questions.
>
> Do you have any recommendations one way or the other regarding this
> type of upgrade? I do not remember having to unload and reload the
> data . which is what I would consider being the biggest pain.
> Advantages of such an upgrade? Disadvantages?
>
> Both the UNIX and IFMX upgrade would occur on the same UNIX server
> that the current AIX/IFMX resides upon.
>
> Take care.
>
> Clifton M. Bean
> Informix DBA / AIX System Admin
> Currency Technics & Metrics
> 1431 Greenway Drive #700
> Irving, Texas 75038
>
> Main (972) 812-1411 x244
>
> Toll Free (800) 834-8807 x244
>
> Fax (469) 417-0665
>
>
>
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>

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6501 Legacy Drive M/S 6108
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Messages In This Thread

• Advantages/Disadvantages of Upgrading a 9.21 32-Bi
  Clifton Bean -- Thursday, 5 October 2006, at 11:50 a.m.
  • AW: Advantages/Disadvantages of Upgrading a 9.21 3
    Andreas.KUTSCHE@spar.at -- Thursday, 5 October 2006, at 11:58 a.m.
  • Re: Advantages/Disadvantages of Upgrading a 9.21 3
    Joel Schumacher -- Thursday, 5 October 2006, at 12:20 p.m.
    • RE: Advantages/Disadvantages of Upgrading a 9.....
      Marcus Haarmann -- Sunday, 8 October 2006, at 3:24 p.m.
    • RE: Advantages/Disadvantages of Upgrading a 9.....
      Marcus Haarmann -- Monday, 9 October 2006, at 2:54 a.m.

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