I cannot install Discoverer, problem of the OraHome

Question

Hi
I have problem with instalation of the discoverer 3.1 or 3i.
I have instaled the database Oracle8i on default OraHome with name 'OraHome81' and I use more than one OraHome. One for WebDB with name 'OraHomeWDB' and one for OAS 4.0 with name 'OraHomeAS'
I want to install Discoverer on the same maschine but when I create another one OraHome for example with name 'OraHomeDV' it says that Discoverer do not support the nultiple instalation and therfore it cannot be instaled on orahome 'OraHomeDV'. It can be only instaled on orahome 'OraHome81'.
When I install the Discoverer to orahome 'OraHome81' it says that this place "d:\...\orahome81" is stil as orahome for 'Oracle 816 Production' and it cannot be used for orahome for 'nt'
Does anybody know how can I install Discoverer?
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Answer 1

Look at the note below
PURPOSE
This document describes how to install Discoverer 3.1 for Windows or Discoverer
3i server on machines where Oracle 8i, or another product installed using the
Oracle Universal Installer already exists.
Installing Discoverer when Oracle 8i already installed.
If you try and install Discoverer (either Discoverer 3.1 for Windows or Discoverer
3i Application Server) on a machine where Oracle 8i (or some other product which
uses the Oracle Universal Installer) already exists you will see the following
error message or something similar:
"Discoverer User Edition does not support multiple installations, and therefore
cannot be installed on 'Default_Home'. It can only be installed on 'OraHome8i'.
In order to install Discoverer User Edition, please run Oracle Installer again,
and select 'OraHome8i'as the target location.",
where Default_Home is the name of the standard Oracle home and OraHome8i is the
name of the Oracle Home for Oracle 8i.
If you do as the message says, you then get the error, or something similar:
"The location specified, 'd:\oracle8i', is already used as an Oracle home for
'Oracle 816 Production'. It cannot be used as an Oracle home for 'nt'."
where d:\oracle8i is the directory of OraHome8i.
You need to install Discoverer in a non-8i home; so in the example above, in the
Oracle Home in the Orant directory rather than in the one in the oracle8i directory.
The problem is that in the registry, the value for the Default_home key has been
set to the Oracle 8i home. You need to change this to point to the standard
Oracle home. Back-up your registry before editing it.
- Run REGEDT32.EXE or REGEDIT.EXE from the command prompt to open the registry and
edit it.
- Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\ALL_HOMES and change the value
of DEFAULT_HOME from OraHome8i to Default_Home (or whatever is appropriate in
your situation).
- From the 'Oracle for Windows NT' program group, run the Oracle Home Selector
and select Default_Home. The Oracle Home Selector just makes this home appear
first in your path environment variable.
You shouldn't run into this problem if you create the Default_Home before the one
for Oracle 8i. But if Oracle 8i is already installed, you might find it best to
de-install all Oracle products, delete the registry entries and then re-install, but
create the Default_Home first.
Hope this helps
Sreeram