1) Follow the instructions on the GettingStarted wiki page
2) Stop the tomcat container and navigate to $TOMCAT_HOME/webapps/
portal/
3) Add the mysql jdbc drivers to WEB-INF/lib
4) Replace the bean in WEB-INF/dataSource.xml with the following:
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource" destroy-
method="close">
<property name="driverClassName"
value="com.mysql.jdbc.Driver" />
</bean>
5) Change line 55 of WEB-INF/applicationContext.xml to read:
p:databasePlatform="org.eclipse.persistence.platform.database.MySQLPlatform"
Hope this helps.
-Matt