Poll ツールにアクセすると以下のエラーが表示される:

Fatal internal error handling request:
Target exception of class org.springframework.dao.InvalidDataAccessResourceUsageException
Successive lines until stack trace show causes progressing to exception site:
could not execute query; nested exception is org.hibernate.exception.SQLGrammarException: could not execute query
org.springframework.dao.InvalidDataAccessResourceUsageException: could not execute query; nested exception is org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: org.hibernate.exception.SQLGrammarException: could not execute query
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2223)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
at org.springframework.orm.hibernate3.HibernateTemplate$35.doInHibernate(HibernateTemplate.java:984)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:372)
at org.springframework.orm.hibernate3.HibernateTemplate.findByCriteria(HibernateTemplate.java:974)
at org.springframework.orm.hibernate3.HibernateTemplate.findByCriteria(HibernateTemplate.java:967)
at org.sakaiproject.poll.dao.impl.PollListManagerDaoImpl.findAllPolls(PollListManagerDaoImpl.java:203)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy87.findAllPolls(Unknown Source)
at org.sakaiproject.poll.tool.producers.PollToolProducer.fillComponents(PollToolProducer.java:181)
at uk.org.ponder.rsf.view.support.ViewCollector.fillComponents(ViewCollector.java:56)
at uk.org.ponder.rsf.view.support.LayoutCollector.fillComponents(LayoutCollector.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:198)
at $Proxy89.fillComponents(Unknown Source)
at uk.org.ponder.rsf.view.support.ViewGenerator.generateView(ViewGenerator.java:53)
at uk.org.ponder.rsf.processor.RSFRenderHandler$1.run(RSFRenderHandler.java:92)
at uk.org.ponder.util.CollectingRunnableInvoker$1.run(CollectingRunnableInvoker.java:25)
at uk.org.ponder.rsf.flow.support.BasicScopedAlterationWrapper.invokeRunnable(BasicScopedAlterationWrapper.java:59)
at uk.org.ponder.rsf.flow.support.BasicScopedAlterationWrapper$$FastClassByCGLIB$$84f89202.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:623)
at uk.org.ponder.rsf.flow.support.BasicScopedAlterationWrapper$$EnhancerByCGLIB$$9392038c.invokeRunnable(<generated>)
at uk.org.ponder.rsf.flow.support.BasicScopedAlterationWrapper$$FastClassByCGLIB$$84f89202.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:623)
at uk.org.ponder.rsf.flow.support.BasicScopedAlterationWrapper$$EnhancerByCGLIB$$9392038c.invokeRunnable(<generated>)
at uk.org.ponder.util.CollectingRunnableInvoker$1.run(CollectingRunnableInvoker.java:29)
at uk.org.ponder.util.CollectingRunnableInvoker.invokeWrappers(CollectingRunnableInvoker.java:22)
at uk.org.ponder.util.CollectingRunnableInvoker.invokeRunnable(CollectingRunnableInvoker.java:14)
at uk.org.ponder.rsf.processor.RSFRenderHandler.handle(RSFRenderHandler.java:85)
at uk.org.ponder.rsf.processor.RSFRenderHandler$$FastClassByCGLIB$$8252dcfe.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:623)
at uk.org.ponder.rsf.processor.RSFRenderHandler$$EnhancerByCGLIB$$24c1eb60.handle(<generated>)
at uk.org.ponder.rsf.processor.RenderHandlerBracketer.handle(RenderHandlerBracketer.java:84)
at uk.org.ponder.rsf.processor.RenderHandlerBracketer$$FastClassByCGLIB$$2fdfc810.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:623)
at uk.org.ponder.rsf.processor.RenderHandlerBracketer$$EnhancerByCGLIB$$bd2f11a6.handle(<generated>)
at uk.org.ponder.rsf.servlet.RootHandlerBean.handleGet(RootHandlerBean.java:121)
at uk.org.ponder.rsf.servlet.RootHandlerBean.handle(RootHandlerBean.java:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at uk.org.ponder.reflect.JDKReflectiveCache.invokeMethod(JDKReflectiveCache.java:23)
at uk.org.ponder.reflect.JDKReflectiveCache.invokeMethod(JDKReflectiveCache.java:17)
at uk.org.ponder.reflect.JDKReflectiveCache.invokeMethod(JDKReflectiveCache.java:77)
at uk.org.ponder.rsac.RSACBeanLocatorImpl.createBean(RSACBeanLocatorImpl.java:550)
at uk.org.ponder.rsac.RSACBeanLocatorImpl.access$000(RSACBeanLocatorImpl.java:72)
at uk.org.ponder.rsac.RSACBeanLocatorImpl$1.run(RSACBeanLocatorImpl.java:446)
at uk.org.ponder.rsac.RSACErrorBridge.invokeRunnable(RSACErrorBridge.java:38)
at uk.org.ponder.rsac.RSACBeanLocatorImpl.createBean(RSACBeanLocatorImpl.java:444)
at uk.org.ponder.rsac.RSACBeanLocatorImpl.getLocalBean(RSACBeanLocatorImpl.java:345)
at uk.org.ponder.rsac.RSACBeanLocatorImpl.getBean(RSACBeanLocatorImpl.java:376)
at uk.org.ponder.rsac.PerRequestInfo$1.locateBean(PerRequestInfo.java:49)
at uk.ac.cam.caret.sakai.rsf.servlet.ReasonableSakaiServlet.service(ReasonableSakaiServlet.java:64)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:364)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:459)
at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1204)
at org.sakaiproject.portal.charon.handlers.ToolHandler.doTool(ToolHandler.java:165)
at org.sakaiproject.portal.charon.handlers.ToolHandler.doGet(ToolHandler.java:88)
at org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPortal.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:592)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.sql.SQLException: ORA-00932: inconsistent datatypes: expected - got CLOB

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:799)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1037)
at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:839)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1132)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3316)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3361)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1787)
at org.hibernate.loader.Loader.doQuery(Loader.java:674)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2220)
... 106 more