RS in coaching tool with PostgreSQL

2016-03-07 07:52:41,611 [ajp-nio2-8003-exec-6] ERROR OLATRuntimeException - OLAT::ERROR ^%^ N3-E1 ^%^ org.olat.core.logging 

https://xyz.olat.com/auth/UserAdminSite/0/usearch/0/table/0/Identity/4784257/tab/7 ^%^ Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_3) AppleWebKit/601.4.4 (KHTML, like Gecko) Version/9.0.3 Safari/601.4.4
**RedScreen** org.hibernate.exception.SQLGrammarException: could not extract ResultSet

<dispatchinfo>
	<componentinfo>
		<compname>ffo_main_cert_statement_list</compname>
		<compclass>org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer</compclass>
		<extendedinfo>n/a</extendedinfo>
		<event>
			<class&gt;org.olat.core.gui.components.form.flexible.impl.FormEvent</class&gt;
			<command>done</command>
			<tostring>com:done,org.olat.core.gui.components.form.flexible.impl.FormEvent@2f23a1</tostring>
		</event>
	</componentinfo>
	<controllerinfo>
		<controllername>org.olat.course.certificate.ui.CertificateAndEfficiencyStatementListController</controllername>
		<controllername>org.olat.admin.user.UserAdminController</controllername>
		<controllername>org.olat.core.gui.components.table.TableController</controllername>
		<controllername>org.olat.admin.user.UsermanagerUserSearchController</controllername>
		<controllername>org.olat.admin.UserAdminMainController</controllername>
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
	</controllerinfo>
</dispatchinfo>

>>> stack of 1.cause::org.olat.core.logging.OLATRuntimeException: org.hibernate.exception.SQLGrammarException: could not extract ResultSet
-> at org.olat.core.gui.exception.ExceptionWindowController.<init>(ExceptionWindowController.java:116)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:57)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:46)
   at org.olat.core.gui.components.Window.dispatchRequest(Window.java:536)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:234)
   at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:193)
   at org.olat.dispatcher.AuthenticatedDispatcher.processValidDispatchURI(AuthenticatedDispatcher.java:298)
   at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:216)
   at org.olat.core.servlets.OpenOLATServlet.executeUserRequest(OpenOLATServlet.java:289)
   at org.olat.core.servlets.OpenOLATServlet.doPost(OpenOLATServlet.java:232)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
>>> stack of 2.cause::javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not extract ResultSet
-> at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1763)
   at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677)
   at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:458)
   at org.olat.modules.coach.manager.CoachingDAO.getUsersStatisticsInfos(CoachingDAO.java:827)
   at org.olat.modules.coach.manager.CoachingDAO.getUsersStatisticsNative(CoachingDAO.java:797)
   at org.olat.modules.coach.manager.CoachingServiceImpl.getUsersStatistics(CoachingServiceImpl.java:74)
   at org.olat.modules.coach.ui.UserListController.loadModel(UserListController.java:127)
   at org.olat.modules.coach.ui.UserListController.search(UserListController.java:147)
   at org.olat.modules.coach.ui.UserSearchController.doSearchByIdentityKey(UserSearchController.java:100)
   at org.olat.modules.coach.ui.UserSearchController.activate(UserSearchController.java:79)
   at org.olat.modules.coach.ui.CoachMainController.activate(CoachMainController.java:112)
>>> stack of 3.cause::org.hibernate.exception.SQLGrammarException: could not extract ResultSet
-> at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:123)
   at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
   at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
   at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
   at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91)
   at org.hibernate.loader.Loader.getResultSet(Loader.java:2066)
   at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863)
   at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839)
   at org.hibernate.loader.Loader.doQuery(Loader.java:910)
   at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
   at org.hibernate.loader.Loader.doList(Loader.java:2554)
>>> stack of 4.cause::org.postgresql.util.PSQLException: ERROR: operator does not exist: bigint ~~ bigint