linux set env permanent
# for bash
Bash as login shell will load /etc/profile, ~/.bash_profile, ~/.bash_login, ~/.profile in the order
Bash as non-login interactive shell will load ~/.bashrc
Bash as non-login non-interactive shell will load the configuration specified in environment variable $BASH_ENV
$cat ~/.profile
#add lines at the bottom of the file:
export LD_LIBRARY_PATH=/usr/lib/oracle/11.2/client64/lib
export ORACLE_HOME=/usr/lib/oracle/11.2/client64
#OR
nano /etc/environment