Lyall I agree with nearly all your points as usual, but each Oracle install does create a log file in the Oracle inventory location called install_actionsxxxxx.log that contains the record of the install including the source of the oracle environment variables. Niall Litchfield On Jun 1, 2010 2:20 PM, <lyallbarbour@xxxxxxxxxxxxxxx> wrote: it looks to me like your $ORACLE_HOME = $ORACLE_BASE. Not sure how that happened. root.sh changes file permissions and will set up the oraenv script. I don't believe it ever changed the ORACLE_HOME env var. I don't know if anyone else can help you, but i'd need more info, if i was going to be more useful. Version of Oracle and O/S would be a start. Lyall -----Original Message----- From: Sven Aluoor <aluoor@xxxxxxxxx> To: oracle-l@xxxxxxxxxxxxx Sent: Tue...