Configure Network Port 2
Optionally, configure Network Port 2 for library managed encryption (LME).
LME requires library code 3.50 and above. Configuring Port 2 will force LME through Port 2 only. Leaving the Port 2 configuration set to the default will for LME through Port 1 only (if you enable LME).
Note:
Do not configure Port 2 for any other use than with LME, otherwise you may encounter issues. If you are not using LME, Oracle recommends that you leave Port 2 set to the defaults. See Behavior of Library Port 1 and Port 2 with LME for more information.