Jesper,I am not sure which additional checks you are asking for,these checks are already there 1) "jesper.pedersen" wrote : if the user has specified an incorrect class name, the driver hasn't been deployed to the lib/ directory, | BaseWrapperManagedConnectionFactory::loadReauthClass() catch (Exception e) | { | throw new JBossResourceException("Failed to load the reauthentication class " + reauthenticateClassName, e); | } | } 2) "jesper.pedersen" wrote : | if the method doesn't exist on the class and so on. It is tackled in the vendor implementation of the ReauthenticationMechansim e.g MySqlReauthenticationMechansimImpl::reauthenticate catch (Exception e) | { | Throwable t = e.getCause(); | if (t instanceof SQLException) { | throw (SQLException)e; | } else { | log.error("Unexpected error in changeUser", e); | } | } View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4241098#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...