Getting exception on hibernate named query ...

[Sonx Nkuks]

i have the following named query ...

<sql-query name="RunTaskOverrideItemSummary">
    <return alias="RunTaskOverrideItemSummary" class="co.test.domain.RunTaskOverrideItemSummaryDo" lock-mode="none">
        <return-property name="runNumber" column="runNumber"/>
        <return-property name="runWorkUnitNumber" column="runWorkUnitNumber"/>
        <return-property name="runTaskNumber" column="runTaskNumber"/>
        <return-property name="workUnitName" column="workUnitName"/>
        <return-property name="taskName" column="taskName"/>
        <return-property name="overrideItemCount" column="overrideItemCount"/>
        <return-property name="runStatusCode" column="runStatusCode"/>
        <return-property name="runTaskStatusCode" column="runTaskStatusCode"/>
        <return-property name="runStartDate" column="runStartDate"/>
        <return-property name="runEndDate" column="runEndDate"/>            
        <return-property name="isListItemApplicable" column="isListItemApplicable"/>            
    </return>
    <![CDATA[select max(br.startdate) as runStartDate, br.runid as runNumber, max(brwu.workunitname) as workUnitName, 
                max(brt.taskname) as taskName, 
                count(rtoli.runtaskoverridelistitemid) as overrideItemCount, 
                case when max(t.TaskEngineLimit) >= 1 then 1 else 0 end as isListItemApplicable,
                brt.runtaskid as runTaskNumber, max(br.StatusCode) as runStatusCode, max(brt.statusCode) as runTaskStatusCode, 
                max(brwu.runWorkUnitID) as runWorkUnitNumber, max(br.enddate) as runEndDate
                from batchrun br
                inner join batchrunworkunit brwu on brwu.runid = br.runid --and br.statuscode = 0 -- Must be not started.
                inner join batchruntask brt on brt.runworkunitid = brwu.runworkunitid 
                inner join Task t on t.TaskName = brt.TaskName and t.TaskType = 2
                left join runtaskoverridelistitem rtoli on rtoli.runtaskid = brt.runtaskid
                group by br.runid, brwu.runworkunitid, brt.runtaskid
                order by max(br.startdate), br.runid, max(brwu.SequenceNo), max(brwu.workunitname), max(brt.TaskName), brt.RunTaskID
    ]]>
</sql-query>

i get

EJB threw an unexpected (non-declared) exception during invocation of method "retrieveRunTaskOverrideSummary" on bean "BeanId(EpsilonPlanComponentApp#EpsilonPlanComponentEJB.jar#BatchOverrideManagerBean, null)". Exception data: za.co.sanlam.common.exception.SystemException: CMNDA0001E: A data access system exception has occured. Implementation: Hibernate. Cause: org.hibernate.HibernateException: Errors in named queries: RunTaskOverrideItemSummary
    at co.test.common.exception.ExceptionUtils.createHibernateSystemException(ExceptionUtils.java:210)
    at co.test.common.exception.ExceptionUtils.createHibernateSystemException(ExceptionUtils.java:183)
    at co.test.dao.hibernate.BatchOverrideDaoHibernate.getRunTaskOverrideSummary(BatchOverrideDaoHibernate.java:115)
    at co.tes.business.BatchOverrideBo.retrieveRunTaskOverrideSummary(BatchOverrideBo.java:72)
    at co.test.service.batchoverridemanager.BatchOverrideManagerServiceImpl.retrieveRunTaskOverrideSummary(BatchOverrideManagerServiceImpl.java:132)
    at co.test.service.batchoverridemanager.ejb.BatchOverrideManagerBean.retrieveRunTaskOverrideSummary(BatchOverrideManagerBean.java:116)
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This happens when hibernate gets the currentSussion