title: How to alter session in oracle to the value of $ORACLE_SID
body: <p>I have lot of databases where schema name is the same as $ORACLE_SID. I would like when i log in to sqlplus something like:</p>
  
  <pre><code>alter session set current_schema=$ORACLE_SID
  </code></pre>
  
  <p>is executed. Everything what I've tried didn't work.</p>