Hi I dont know what version of Camel you are using, but we have recently fixed the scheduled polling consumer to catch java.lang.Error and have that logged as well https://issues.apache.org/activemq/browse/CAMEL-2339
That should help catch those NoClassDefFoundError and other errors being thrown. So could you try with Camel 2.2.0 ? You should see this in the log now: } catch (Error e) { // log the fatal error as the JDK itself may not log it for us log.fatal("Consumer " + this + " could not poll endpoint: " + getEndpoint().getEndpointUri() + " caused by: " + e.getMessage(), e); throw e; } On Tue, Mar 30, 2010 at 3:05 PM, j_h_scheufen <janhendrik.scheu...@sungard.com> wrote: > > Claus, > > thanks for the hint. I implemented a regular Spring-based DAO layer and hit > a NoClassDefFoundError. It turns out it wasn't the JPA configuration at all; > I missed the transitive dependency on ANTLR. Once that was on the classpath, > the JPA consumer started polling. > > I don't have the resources to investigate this further, but I surely wished, > the Camel JPA polling consumer would've been a little more verbose. Could it > be that it's swallowing an underlying exception somewhere? > > Thanks again and keep up the good work! > > Jan > -- > View this message in context: > http://old.nabble.com/JPA-consumer-starts-up%2C-but-is-not-polling-tp27951000p28082231.html > Sent from the Camel - Users mailing list archive at Nabble.com. > > -- Claus Ibsen Apache Camel Committer Author of Camel in Action: http://www.manning.com/ibsen/ Open Source Integration: http://fusesource.com Blog: http://davsclaus.blogspot.com/ Twitter: http://twitter.com/davsclaus