Search notes:

/u01/app/oraInventory

The Oracle Inventory directory stores metadata about an Oracle installation (for example: log files).
Usually, this directory's group ownership belongs to the oracle inventory group group.
Some files that are found under this directory include
oraInst.loc
orainstRoot.sh which (among others) copies this directory's oraInst.loc file to /etc/oraInst.loc.

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