Github user miguelaferreira commented on the pull request: https://github.com/apache/cloudstack/pull/950#issuecomment-153390623 @remibergsma @borisroman I'm closing this PR since I've been able to figure out how the mysql driver is being loaded in the RPM install. It happens that it's not enough to add the jar to tomcat's common class loader, nor the webapp class loader. For it to work the jar must be in the class path of tomcat itself. That is, the `CLASSPATH` variable in the environment that starts tomcat. In tomcat terminology that is the `System` loader (https://tomcat.apache.org/tomcat-7.0-doc/class-loader-howto.html)
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