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Protecting Oracle executables on Unix

Execute the following commands to protect Oracle executables on Unix from unauthorized access:

cd $ORACLE_HOME/bin

chmod 750 lsnrctl
chmod 750 svrmgrl
chmod 750 orapwd
chmod 750 tnslsnr
chmod 750 dbshut
chmod 750 dbstart
chmod 750 tstshm
chmod 750 runInsaller

Also, change file permissions for all you Oracle database files:

Controlfiles = chmod 640 rw-r