Shell script snipplet for resetting a password

This little code snipplet to use a Linux/Unix escape character to send a line shift into a string of mulitple commands:

 #!/bin/bash
. /home/oracle/.bash_profile
userid=$1
password=$2
userexist="WHENEVER SQLERROR EXIT;"
echo -e "alter session set container=PDB01;\n$userexist\nalter user $userid identified by $password account unlock;" | sqlplus -L -s / as sysdba