Stream has already been closed on getting Notifications

2013-03-12 16:59:18,458 WARN  [notificationManager1 ] org.hibernate.util.JDBCExceptionReporter JDBCExceptionReporter-logExceptions - SQL Error: 17027, SQLState: 99999
2013-03-12 16:59:18,460 ERROR [notificationManager1 ] org.hibernate.util.JDBCExceptionReporter JDBCExceptionReporter-logExceptions - Stream has already been closed
2013-03-12 16:59:18,463 ERROR [notificationManager1 ] fisheye DefaultNotificationManager-processNotifications - Error while processing notifications: 
org.hibernate.exception.GenericJDBCException: could not execute query
        at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:140)
        at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:128)
        at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
        at org.hibernate.loader.Loader.doList(Loader.java:2452)
        at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2192)
        at org.hibernate.loader.Loader.list(Loader.java:2187)
        at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:452)
        at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363)
        at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
        at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1258)
        at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
        at com.cenqua.crucible.notification.DefaultNotificationManager.getNotifications(DefaultNotificationManager.java:348)
        at com.cenqua.crucible.notification.DefaultNotificationManager.processNotifications(DefaultNotificationManager.java:354)
        at com.cenqua.crucible.notification.DefaultNotificationManager.access$200(DefaultNotificationManager.java:78)
        at com.cenqua.crucible.notification.DefaultNotificationManager$6.run(DefaultNotificationManager.java:289)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
Caused by: java.sql.SQLException: Stream has already been closed
        at oracle.jdbc.driver.LongAccessor.getBytesInternal(LongAccessor.java:156)
        at oracle.jdbc.driver.LongAccessor.getBytes(LongAccessor.java:126)
        at oracle.jdbc.driver.LongAccessor.getString(LongAccessor.java:201)
        at oracle.jdbc.driver.T4CLongAccessor.getString(T4CLongAccessor.java:427)
        at oracle.jdbc.driver.OracleResultSetImpl.getString(OracleResultSetImpl.java:1150)
        at oracle.jdbc.driver.OracleResultSet.getString(OracleResultSet.java:424)
        at org.hibernate.type.StringType.get(StringType.java:41)
        at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:186)
        at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:175)
        at org.hibernate.type.AbstractType.hydrate(AbstractType.java:105)
        at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2267)
        at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1443)
        at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1371)
        at org.hibernate.loader.Loader.getRow(Loader.java:1271)
        at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:619)
        at org.hibernate.loader.Loader.doQuery(Loader.java:745)
        at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:270)
        at org.hibernate.loader.Loader.doList(Loader.java:2449)
        ... 20 more