IDS Forum

RE: Re: Informix 7 Migration

Posted By: Marcus Haarmann
Date: Thursday, 29 September 2011, at 7:11 a.m.

In Response To: Re: Informix 7 Migration (JONATHAN WEBB)

Hi,

regarding the question to upgrade from 7.x to 11.5 or 11.7,
there is no direct upgrade path because this would be a platform change
from AIX to Linux.
You have to dbexport the data, copy everything and dbimport on the other
machine.
Keep the same settings for DB_LOCALE, CLIENT_LOCALE, DBMONEY etc. for
this process.
10 GB of data with ~50 users in parallel should be doable with an
Innovator instance (if users are equal to parallel sessions).
Maybe this also works if you put the 4GL processes on the same machine,
this could make things
easier if you have operating system users as DB users.
But I dont think you are restricted to one machine, cause IP is
supported as transport in 4GL AFAIK.
You should try to set up a test instance, getting hands on a Innovator
Edition, which you can load free of charge,
copy your data and check out if the 4GL stuff is working (maybe
initially on the same machine).

Marcus

-----Original Message-----
From: JONATHAN WEBB [mailto:jonathan.webb@musto.com]
Sent: Thursday, September 29, 2011 12:26 PM
To: ids@iiug.org
Subject: Re: Informix 7 Migration [25058]

Hi,

First ill start by trying to answer some of your questions...apologies
for any bits im missing, please ask if you'd like to know. Im a Wintel
engineer

We are using R4GL 7.5 (so ive been informed!) i dont know if that will
have any impact at all?

Active users, average about 50 users at once, if we push it, goes to 70.

Theoretical maximum number would be 100 (never hit this!).

The Informix DB is approximately 10Gb in size.

This is the response that ive had from the developer, hopefully you can
get more out of this than I can do.

NB: The Collection aka TC, is the primary set of applications that are
used.

________________________________________________________________________
_______

"The 4GL Environment consists of the Informix 4GL Development
Environment, Informix 4GL Runtime Environment & the Informix 4GL
applications (The Collection programs). The TC programs are not compiled
to be direct executables they are run through the Informix 4GL Runtime
environment. The Informix 4GL Development Environment and 4GL Runtime
Environment are licensed per user. Licensing cost for 4GL and database
is significant and varies between machine platforms/OS and number of
processors on the host machine.

NB We also use the Informix DB Access Tools (mainly used by developers,
but users also execute queries through this tool).

NB the Informix 4GL Runtime & TC programs must execute on the same
server on which the database resides this is a requirement of Informix
4GL. "

________________________________________________________________________
_______

>From this im taking it that our Dev doesnt think that we could move the

informix DB over to CentOS/Ubuntu install as the 4GL applications
require
local access to the informix DB. Does that sound about right?

Where to now...

So we have no money to do anything about licensing, or buying new
hardware,
hard financial times im sorry to say.

What I do have is some half decent hardware avilable. A VMware ESXi
4.1u1 box,
with two 2.9Ghz Xeon 6core CPU's. 1.5TB of disk space running on dual
port 10k
SAS drives in RAID 5, and 48GB of RAM. There is more than enough grunt
on that
box for the user base that we need to support.

So visualization is the plan for the minute at least, it gives us the
flexibility to move the machine around or push down to bear metal if we
need
dedicated hardware.

With that in mind, CentOS would be the OS of choice, seeing as its
background
is Redhat it should provide the most compatibility for what we are
doing, and
the price is right.

Im thinking that id be looking at building.

1 x VM for Informix Innovator C (free edition), this will allow me to
address
4 cores and 2GB of RAM for the DB. Im guessing with the number of
sessions we
are running and the DB size this should be enough.

1 x VM for the 4GL applications to live on.

So now the questions I have!

Given what the dev has mentioned to me, does Aubit 4GL look like a
possible
solution?

Is creating a couple of VM's the best place to start?

How to migrate data from the Informix 7.5 live DB to the new VM runnning
the
latest Informix Innovator C?

Is there a better way to do this?!

Thanks again for all your time and help on this.

Jon

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Messages In This Thread

• Informix 7 Migration
  JONATHAN WEBB -- Wednesday, 28 September 2011, at 11:31 a.m.
  • Re: Informix 7 Migration
    Alexandre Marini -- Wednesday, 28 September 2011, at 11:42 a.m.
  • Re: Informix 7 Migration
    Marco Greco -- Wednesday, 28 September 2011, at 11:47 a.m.
    • RE: Informix 7 Migration
      Noel Murphy -- Wednesday, 28 September 2011, at 11:58 a.m.
  • Re: Informix 7 Migration
    Obnoxio The Clown -- Wednesday, 28 September 2011, at 11:53 a.m.
    • Re: Informix 7 Migration
      Hrvoje Zokovic -- Wednesday, 28 September 2011, at 1:47 p.m.
      • Re: Informix 7 Migration
        JONATHAN WEBB -- Thursday, 29 September 2011, at 4:15 a.m.
  • Re: Informix 7 Migration
    JONATHAN WEBB -- Thursday, 29 September 2011, at 6:25 a.m.
    • RE: Re: Informix 7 Migration
      Marcus Haarmann -- Thursday, 29 September 2011, at 7:11 a.m.
      • Re: Informix 7 Migration
        Alexandre Marini -- Thursday, 29 September 2011, at 8:08 a.m.
      • Re: Re: Informix 7 Migration
        Art Kagel -- Saturday, 1 October 2011, at 8:11 p.m.
    • Re: Informix 7 Migration
      Obnoxio The Clown -- Thursday, 29 September 2011, at 7:34 p.m.
      • Re: Informix 7 Migration
        JONATHAN WEBB -- Monday, 3 October 2011, at 6:21 a.m.
  • RE: Informix 7 Migration
    Scott O'Rourke -- Thursday, 29 September 2011, at 9:46 a.m.

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