Cater for jobs that does not use hibernate session

I get the following exception when my job, which does not use hibernate session, runs.

Exception occured in job: GRAILS_JOBS.dsync.client.WtfJob (org.codehaus.groovy.grails.plugins.quartz.listeners.ExceptionPrinterJobListener)
org.quartz.JobExecutionException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here [See nested exception: org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here]

Cheers,
Andy