Issue to set a value to the profile option "Initialization SQL Statement – Person…"

Hi,

For a specific responsibility, I'd like to set a value to the profile option

"Initialization SQL Statement – Person…"

But after setting the value

            alter session set optimizer_features_enable = '10.2.0.4' ; 

an error is displayed when log in for the specific responsibility.

What's the error syntax?

Thanks in advance,

Armel