Setup glogin.sql in Oracle

Let's take you want to execute some sql commands every time you login to SQL*PLUS. It would be so hard to run those commands manually whenever you start SQL*PLUS. With glogin.sql you can specify the commands you want to run every time you invoke SQL*PLUS.

Any query, script, parameter, PL/SQL code etc, you can simply put under glogin.sql file and SQL*PLUS will first execute glogin.sql before allowing you to query database.

I would like to display below message every time a user logs into the database

Open the glogin.sql file

vi $ORACLE_HOME/sqlplus/admin/glogin.sql

Put below query at the end of the file

select 'Welcome, you are connected to '||name||' database' "Hello" from v$database;

Save and close. That's it, now whenever you login to SQL*PLUS, you will be greeted with a nice welcome message!