Notifications from new Files viewer on MySQL and Oracle and SQL Server throws 'SQLException: You can't operate on a closed ResultSet!!!'

2015-03-26 15:16:20,447 ERROR [NotificationSender:thread-2] [sf.hibernate.impl.IteratorImpl] next could not get next result
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java.sql.SQLException: You can't operate on a closed ResultSet!!!
	at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
	at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:65)
	at com.mchange.v2.c3p0.impl.NewProxyResultSet.next(NewProxyResultSet.java:2865)
	at net.sf.hibernate.impl.IteratorImpl.postNext(IteratorImpl.java:85)
	at net.sf.hibernate.impl.IteratorImpl.next(IteratorImpl.java:127)
	at com.google.common.collect.Iterators$8.next(Iterators.java:811)
	at com.atlassian.confluence.plugins.files.manager.DefaultConfluenceFileManager.getUnresolvedCommentCountByAttachmentId(DefaultConfluenceFileManager.java:133)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy2519.getUnresolvedCommentCountByAttachmentId(Unknown Source)
	at com.atlassian.confluence.plugins.files.notifications.email.FileContentUpdateRenderContextFactory.getFileContentForNotificationContent(FileContentUpdateRenderContextFactory.java:105)
	at com.atlassian.confluence.plugins.files.notifications.email.FileContentUpdateRenderContextFactory.getFileContentsForNotificationContents(FileContentUpdateRenderContextFactory.java:83)
	at com.atlassian.confluence.plugins.files.notifications.email.FileContentUpdateRenderContextFactory.createForRecipient(FileContentUpdateRenderContextFactory.java:55)
	at com.atlassian.confluence.notifications.content.ContentRenderContextFactory.checkedCreate(ContentRenderContextFactory.java:61)
	at com.atlassian.confluence.notifications.RenderContextProviderTemplate.create(RenderContextProviderTemplate.java:26)
	at com.atlassian.confluence.notifications.impl.spi.DeclarativeRenderContextFactory.buildRecipientProviderContext(DeclarativeRenderContextFactory.java:191)
	at com.atlassian.confluence.notifications.impl.spi.DeclarativeRenderContextFactory.access$400(DeclarativeRenderContextFactory.java:44)
	at com.atlassian.confluence.notifications.impl.spi.DeclarativeRenderContextFactory$2.call(DeclarativeRenderContextFactory.java:139)
	at com.atlassian.confluence.notifications.impl.spi.DeclarativeRenderContextFactory$2.call(DeclarativeRenderContextFactory.java:122)
	at com.atlassian.confluence.user.AuthenticatedUserImpersonator$2.call(AuthenticatedUserImpersonator.java:134)
	at com.atlassian.confluence.user.AuthenticatedUserImpersonator$1.call(AuthenticatedUserImpersonator.java:113)
	at com.atlassian.confluence.user.AuthenticatedUserImpersonator.asUser(AuthenticatedUserImpersonator.java:89)
	at com.atlassian.confluence.notifications.impl.spi.DeclarativeRenderContextFactory$1.call(DeclarativeRenderContextFactory.java:97)
	at com.atlassian.confluence.notifications.impl.spi.DeclarativeRenderContextFactory$1.call(DeclarativeRenderContextFactory.java:94)
	at com.atlassian.confluence.notifications.impl.DefaultFakeHttpRequestInjector$1.doFilter(DefaultFakeHttpRequestInjector.java:51)
	at com.atlassian.core.filters.ServletContextThreadLocalFilter.doFilter(ServletContextThreadLocalFilter.java:21)
	at com.atlassian.confluence.notifications.impl.DefaultFakeHttpRequestInjector.withRequest(DefaultFakeHttpRequestInjector.java:46)
	at com.atlassian.confluence.notifications.impl.spi.DeclarativeRenderContextFactory.createChecked(DeclarativeRenderContextFactory.java:94)
	at com.atlassian.plugin.notifications.api.medium.RenderContextFactoryTemplate.create(RenderContextFactoryTemplate.java:53)
	at sun.reflect.GeneratedMethodAccessor856.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy1450.create(Unknown Source)
	at com.atlassian.plugin.notifications.dispatcher.task.IndividualNotificationTask$UserKeySender.send(IndividualNotificationTask.java:157)
	at com.atlassian.plugin.notifications.dispatcher.task.IndividualNotificationTask.execute(IndividualNotificationTask.java:64)
	at com.atlassian.plugin.notifications.dispatcher.AbstractNotificationTask.run(AbstractNotificationTask.java:111)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
	at com.mchange.v2.c3p0.impl.NewProxyResultSet.next(NewProxyResultSet.java:2859)
	... 74 more