As far as I know, The App. Dev. Client is additional to the Run Time Client.
When you install App. Dev. it installs Run Time as well.
If you are at V7 Run Time and you install V8 App. Dev. it will "overwrite"
any Run Time and install current (V8) Run Time as well as App. Dev.
HTH, Pierre.

--
Pierre Saint-Jacques
SES Consultants Inc.
514-737-4515
<pshindle@comcast.net> a écrit dans le message de news:
1137026044.457829.121780@g47g2000cwa.googlegroups. com...
> Thank you for all of the replies on this thread. But I am still
> looking for the answer to my original question (which is repeated
> below).
> Can anyone help me on this please?
> ================================================== ==================
>
> We have several machines currently running the DB2 V7 Run-time Client
> that we would like to actually be running the App Dev Client. To
> 'upgrade' (within the same version) this client software can we simply
> install the App Dev Client on 'top of' the Run-time Client? Will the
> install routine uninstall the Run-time Client under the covers during
> the install of the App Dev Client?
>
>
> Also, is this type of 'upgrade' possible/supported during a
> Version-to-Version upgrade, such as when migrating from V7 to V8?
>
>
> Thanks.
>

richard_mccutcheon@hcm.honda.com wrote:
> You can't connect a v8 client to a v7 server (If
> you happen to expect major problems).
>
> Can you be more specific with this statement doug?
>
> We have been testing the DB2 v8.2 windows Admin Client with various 3rd
> party reporting tools and with native sql queries against a few
> different DB2 v7.2 aix servers. We are preparing to roll this out to
> our user machines. We have had absolutely no issues so far, but you're
> comments make me nervous.
>
> Pleease elaborate if possible.
>
> Thank you,
> Richard McCutcheon.
> Honda of Canada Manufacturing.

I should have restated my answer a little better. (You can't) to ( You
can with limited support)

You can connect a version 8 UDB client to a version 7 UDB server.
However you will not have full functions between the two drivers. Most
of
the UDB QUI tools only work with limited functionality. Also, I have
had many problems related to Stored procedures.

Basically the best recommendation it to keep the client and server
versions as close as possible and on the latest fixpak...

Why? Most problems with client to sever communications have been fixed
or are in the stages of being fixed. "Fixpak are free"

Like all fixpak release I recommend that you first test them out on
your development system before placing them into production.

I have had only one fixpak release that I had to roll back because of
problems. And those problems were then fixed in the next fixpak
release. Also remember that Version 7 is no long available.