title: Tomcat 7: the JDBC Driver has been forcibly unregistered
body: <p>I have some problems with deploying Groovy &amp; Grails application on Tomcat 7.</p>
  
  <p>There is my configuration:</p>
  
  <pre><code>Tomcat Version: Apache Tomcat/7.0.8
  JVM Version: 1.6.0_26-b03
  JVM Vendor: Sun Microsystems Inc.
  OS Name: Linux
  OS Version: 2.6.32-32-server
  OS Architecture: amd64
  Grails: 1.3.8
  Groovy: 1.8.0
  </code></pre>
  
  <p>On server there is 5 different application all runing and using com.mysql.jdbc.Driver, but when I want to deploy one more application I ger this error:</p>
  
  <blockquote>
    <p>SEVERE: The web application [/RacuniWeb_v3-0.1] registered the JDBC
    driver [com.mysql.jdbc.Driver] but failed to unregister it when the
    web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.</p>
  </blockquote>
  
  <p>Can anyone help me ? What to do that deploy will work ?</p>