Environment Variables not working in Windows 11 - SOLVED

Environment Variables play an important part in running things on OS. Especially for windows, it's entire working is dependent on them. The most basic segregation you might have seen is between SYSTEM variables and USER variables inside Environment Variables window. But they have very wide usage like,

Setting Environment Variables for Oracle Database in Windows/Linux

Setting up Environment Variables is important in order to access Oracle Database. It helps you prepare your environment so you can access the database with least efforts and start working as soon as possible. Usually with installations on your personal computers, you'll barely face this issue. But when working in a company, you might came across a problem as shown below,

[oracle@as ~]$ sqlplus
Error 6 initializing SQL*Plus
SP2-0667: Message file sp1<lang>.msb not found
SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory