I know this is probably too late to respond,
But as the protect user try and get to that directory. root has inherent permissions.
Most likely protect can't access anything inside of the Oracle directory
Be sure that both Oracle and Protect are added to the same group, and then verify that the group permissions are set.
(for example, oracle should be part of oinstall group, as should protect)
you can verify groups by typing groups protect, or groups oracle
You may need to add protect to oinstall.
if they are in fact both part of the same groups, do a chmod -R 770 /<top level oracle tools path>
for example since you installed here: /home/oracle/app/oracle/product/11.2.0/client_3/bin
/chmod -R 770 /home/oracle
try again. Should solve the problem if you couldn't path to that directory