Where are Application Install Inventories Stored in Oracle EPM 11.1.2.1

Where are Application Install Inventories Stored in Oracle EPM 11.1.2.1

Hyperion BI+ - Version 11.1.2.1.000 and later
Hyperion Essbase - Version 11.1.2.0.00 to 11.1.2.1.000 [Release 11.1]
Hyperion Planning - Version 11.1.2.0.00 to 11.1.2.1.000 [Release 11.1]
Information in this document applies to any platform.

*** Checked for Relevance 24-Sep-2012 ***
Goal
Identify the location of software inventories associated with Oracle EPM 11.1.2.1.
Fix
It is important to know where installation inventory lists are stored: to detect the completeness of an install, to determine whether a patch has been applied, or to delete as part of a reinstall.
\Oracle\Middleware\EPMSystem11R1\oraInst.loc points to the location of the central inventory. oraInst.loc may have been installed in a previous Oracle install on Unix in: /var/opt/oracle or /etc or $HOME (of the user installing Oracle software), preventing the 'reinstall' of OHS or other software.
\Program Files\Oracle\Inventory is typically the location of the central inventory (despite the name 'central inventory', there may exist mutually exclusive inventories generated with the install of other Oracle products). On Unix/Linux the central inventory is in the installer's 'home' directory.
A local inventory is typically found in \Oracle\Middleware\EPMSystem11R1\.oracle.products This file is used to recreate an inventory if need be (but a regeneration of an inventory will exclude service fixes/patches installed via OPatch. To recreate an inventory after one is corrupted...run \Oracle\Middleware\EPMSystem11R1\OPatch\createInventory.bat.)
A local pointer (.oracle.instances) to the instance(s) set by EPM 11.1.2.0 and EPM 11.1.2.1 (and referenced by EPM 11.1.2.1 Installer for 'Apply Maintenance Release' option) is put in C:\Users\<username>\ Ensure the same user installs both versions.
\Oracle\Middleware\ohs\.patch_storage (holds records of previous OPatches)