Oracle Database - OUI-10044: The selected Oracle Home ...

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You may have this error when you try to install a oracle software with Oracle Universal Installer (OUI) (as for instance, the companion product).

OUI-10044: The selected Oracle Home location already contains an Oracle Home 
or APPL_TOP created while running a different OS

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Solution

In the majority of the case, you try to install a version of software (database patch,companion, …) which is planned to be use with an other version than the installed product (database, owb, …).

You have to download the good patch/software for the OS version of the installed product.

The Os Id

During the installation, an OS Id is passed.

Operating system	ID
AIX	610
Linux (x86 and x86-64)	46
HP-UX PA-RISC	2
HP-UX Itanium	197
Microsoft Windows (32-bit)	912
Microsoft Windows Server 2003 (64-bit It)	233
Solaris SPARC	453

For the installed product

You can check the Os ID of the installed database in the file :

Path/oraInventory/install.platform

Path is normally on Windows : C:\Program Files\Oracle

[DEFAULT_SECTION]

[Platform]
ID=912

For the software to install

And on the set/patch/cd of a software (for instance, companion), you will find it :

Path/stage/shiphomeproperties.xml

in the node ARU_ID.

Here an example for the 64bit Itanium:

<?xml version="1.0" standalone="yes" ?>
<ORACLEHOME_INFO>
        <ARU_PLATFORM_INFO>
                <ARU_ID>233</ARU_ID>
                <ARU_ID_DESCRIPTION>Microsoft Windows Server 2003 (64-bit It)
                </ARU_ID_DESCRIPTION>
        </ARU_PLATFORM_INFO>
</ORACLEHOME_INFO>