title: How to change read-only permission to set new value of MySQL server system variable
body: <p>I am new to MySQL; recently I faced this problem while setting a new value for a system variable.</p>
  
  <p>I tried:</p>
  
  <pre><code>mysql&gt; set global innodb_ft_min_token_size = 6;
  </code></pre>
  
  <p>but I am getting this error:</p>
  
  <pre><code>ERROR 1238 (HY000): Variable 'innodb_ft_min_token_size' is a read only variable
  </code></pre>
  
  <p>Is there any way to change the read only permission? I read about <a href="http://dev.mysql.com/doc/refman/5.6/en/innodb-parameters.html" rel="noreferrer">InnoDB parameters</a> but could not resolve the problem.</p>