title: Can't create trigger using SQLPlus in Oracle
body: <p>I'm Learning Oracle and wanted to try creating a trigger. I tried this example form a book in sqlplus.</p>
  
  <pre><code>SQL&gt; CREATE OR REPLACE TRIGGER policy_bull BEFORE insert or update
    2  ON emp
    3  FOR EACH ROW
    4  BEGIN
    5    :new.salary := 200;
    6  END
    7  /
  </code></pre>
  
  <p>ERROR at line 1:
  ORA-04089: cannot create triggers on objects owned by SYS</p>
  
  <p>even though I logged in as SYS using </p>
  
  <p>sqlplus "sys/oracle as sysdba"</p>