title: oracle procedure ussing Host() command
body: <p>I am having a problem using <code>host()</code> command in oracle procedure. 
  I have written very simple oracle code.</p>
  
  <pre><code>CREATE OR REPLACE PROCEDURE 
  
  run_command(command_i IN VARCHAR2)
  
  IS
    l_message  VARCHAR2 (100);
  
  BEGIN
  
    l_message  := 'cmd ' || command_i;
  
    host(l_message); 
  
  END run_command;
  </code></pre>
  
  <p>when <code>host(l_message);</code> is eliminated works fine.</p>
  
  <p>Whats the problem and is there anyway to create a routine which uses <code>host()</code>?</p>