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  <title>Cannot load JDBC driver class 'com.mysql.jdbc.Driver'</title>
  <link rel="self" href="https://liferay.dev/c/message_boards/find_thread?p_l_id=119785294&amp;threadId=471637" />
  <subtitle>Cannot load JDBC driver class 'com.mysql.jdbc.Driver'</subtitle>
  <id>https://liferay.dev/c/message_boards/find_thread?p_l_id=119785294&amp;threadId=471637</id>
  <updated>2026-05-05T19:47:44Z</updated>
  <dc:date>2026-05-05T19:47:44Z</dc:date>
  <entry>
    <title>RE: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'</title>
    <link rel="alternate" href="https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=472870" />
    <author>
      <name>JR Houn</name>
    </author>
    <id>https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=472870</id>
    <updated>2008-02-11T22:35:54Z</updated>
    <published>2008-02-11T22:35:54Z</published>
    <summary type="html">Hi Chris-&lt;br /&gt;Try deploying it to the $TOMCAT_HOME/common/lib/ext and see if that solves your problems.&lt;br /&gt;jr</summary>
    <dc:creator>JR Houn</dc:creator>
    <dc:date>2008-02-11T22:35:54Z</dc:date>
  </entry>
  <entry>
    <title>RE: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'</title>
    <link rel="alternate" href="https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=472244" />
    <author>
      <name>Chris Schultz</name>
    </author>
    <id>https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=472244</id>
    <updated>2008-02-11T19:53:27Z</updated>
    <published>2008-02-11T19:53:27Z</published>
    <summary type="html">What do I do with the mysql.jar once I get it?</summary>
    <dc:creator>Chris Schultz</dc:creator>
    <dc:date>2008-02-11T19:53:27Z</dc:date>
  </entry>
  <entry>
    <title>RE: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'</title>
    <link rel="alternate" href="https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=472182" />
    <author>
      <name>JR Houn</name>
    </author>
    <id>https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=472182</id>
    <updated>2008-02-11T19:39:48Z</updated>
    <published>2008-02-11T19:39:48Z</published>
    <summary type="html">Hi Chris-&lt;br /&gt;Sorry that I wasn&amp;#39;t more clear, but the Mysql.jar file that I use is in the liferay-portal-src-4.4.1.zip. It&amp;#39;s a larger file, but try downloading that from sourceforge, so you have the original portal source. Once you unzip that you should find the MySQL.jar file located in ../build/lib/development. As far as JDK 6 in concerned, it should be compatible without a problem. Hope this helps.&lt;br /&gt;jr</summary>
    <dc:creator>JR Houn</dc:creator>
    <dc:date>2008-02-11T19:39:48Z</dc:date>
  </entry>
  <entry>
    <title>RE: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'</title>
    <link rel="alternate" href="https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=471975" />
    <author>
      <name>Chris Schultz</name>
    </author>
    <id>https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=471975</id>
    <updated>2008-02-11T18:44:45Z</updated>
    <published>2008-02-11T18:44:45Z</published>
    <summary type="html">hmmm, doesn&amp;#39;t seem to be located in my liferay folder.&lt;br /&gt;&lt;br /&gt;I downloaded the liferay + tomcat 6 bundle.&lt;br /&gt;&lt;br /&gt;Does JDK 6 work with the bundle I downloaded?</summary>
    <dc:creator>Chris Schultz</dc:creator>
    <dc:date>2008-02-11T18:44:45Z</dc:date>
  </entry>
  <entry>
    <title>RE: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'</title>
    <link rel="alternate" href="https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=471789" />
    <author>
      <name>JR Houn</name>
    </author>
    <id>https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=471789</id>
    <updated>2008-02-11T18:24:32Z</updated>
    <published>2008-02-11T18:24:32Z</published>
    <summary type="html">Hi Chris-&lt;br /&gt;Anytime I&amp;#39;ve configured Liferay to use a mysql database I&amp;#39;ve always used the mysql.jar file included with Liferay&amp;#39;s portal source. Try using that file located in ../lib/development and see if that works for you.&lt;br /&gt;jr</summary>
    <dc:creator>JR Houn</dc:creator>
    <dc:date>2008-02-11T18:24:32Z</dc:date>
  </entry>
  <entry>
    <title>Cannot load JDBC driver class 'com.mysql.jdbc.Driver'</title>
    <link rel="alternate" href="https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=471636" />
    <author>
      <name>Chris Schultz</name>
    </author>
    <id>https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=471636</id>
    <updated>2008-02-11T17:50:28Z</updated>
    <published>2008-02-11T17:50:28Z</published>
    <summary type="html">I put the mysql-connector-java-5.1.5-bin.jar into the %TOMCAT_HOME%/common/lib/etc folder&lt;br /&gt;&lt;br /&gt;Changed the root.xml file to only use mysql database.&lt;br /&gt;&lt;br /&gt;./version.sh outputs&lt;br /&gt;&lt;blockquote&gt;Using CATALINA_BASE: /usr/local/liferay&lt;br /&gt;Using CATALINA_HOME: /usr/local/liferay&lt;br /&gt;Using CATALINA_TEMPDIR: /usr/local/liferay/temp&lt;br /&gt;Using JRE_HOME: /usr/java/jdk1.6.0_04/jre&lt;br /&gt;Server version: Apache Tomcat/6.0.14&lt;br /&gt;Server built: Jul 20, 2007&lt;br /&gt;Server number: 6.0.14.0&lt;br /&gt;OS Name: Linux&lt;br /&gt;OS version: 2.6.16.54-0.2.5-default&lt;br /&gt;Architecture: i386&lt;br /&gt;JVM Version: 1.6.0_04-b12&lt;br /&gt;JVM Vendor: Sun Microsystems Inc.&lt;/blockquote&gt;&lt;br /&gt;&lt;br /&gt;When I startup the portal i get:&lt;br /&gt;&lt;br /&gt;&lt;blockquote&gt;java.lang.IllegalStateException at org.apache.calalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1244)&lt;br /&gt;at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)&lt;br /&gt;at org.apache.activemq.broker.BrokerService.stop(BrokerService.java:440)&lt;br /&gt;at org.apache.activemq.broker.BrokerService.containerShutdown(BrokerService.java:1391)&lt;/blockquote&gt;&lt;br /&gt;&lt;br /&gt;along with the cannot load JDBC driver error.&lt;br /&gt;&lt;br /&gt;Anyone have any ideas?</summary>
    <dc:creator>Chris Schultz</dc:creator>
    <dc:date>2008-02-11T17:50:28Z</dc:date>
  </entry>
</feed>
