Use of schedule expression start/end date for (Database) persistent calendar timers fail if the server is restarted and the timer reloaded

If Calendar timers are created programatically it is possible to use the javax.ejb.ScheduleExpression and set start() end() as a Date.
If the timer is persistent and the database is Oracle (here 12c ojdbc7 driver) a server restart will show the following Exception is:

13:55:00,450 WARN [org.jboss.as.ejb3.timer] (ServerService Thread Pool – 63) WFLYEJB0161: Failed to reinstate timer 'ejb31-timer.ejb31-timer.SimpleScheduleSingletonTimerBean' (id=bd2e59a0-bdf6-43a1-9241-fd3a0b3a72da) from its persistent state: java.sql.SQLException: Invalid conversion requested
at oracle.jdbc.driver.CharCommonAccessor.getTimestamp(CharCommonAccessor.java:420)
at oracle.jdbc.driver.T4CVarcharAccessor.getTimestamp(T4CVarcharAccessor.java:644)
at oracle.jdbc.driver.GeneratedStatement.getTimestamp(GeneratedStatement.java:360)
at oracle.jdbc.driver.GeneratedScrollableResultSet.getTimestamp(GeneratedScrollableResultSet.java:1008)
at org.jboss.jca.adapters.jdbc.WrappedResultSet.getTimestamp(WrappedResultSet.java:2140)
at org.jboss.as.ejb3.timerservice.persistence.database.DatabaseTimerPersistence.timerFromResult(DatabaseTimerPersistence.java:535)
at org.jboss.as.ejb3.timerservice.persistence.database.DatabaseTimerPersistence.loadActiveTimers(DatabaseTimerPersistence.java:452)
at org.jboss.as.ejb3.timerservice.TimerServiceImpl.getActivePersistentTimers(TimerServiceImpl.java:953)
at org.jboss.as.ejb3.timerservice.TimerServiceImpl.restoreTimers(TimerServiceImpl.java:693)
at org.jboss.as.ejb3.timerservice.TimerServiceImpl.activate(TimerServiceImpl.java:225)
at org.jboss.as.ejb3.component.EJBComponent.start(EJBComponent.java:588)
at org.jboss.as.ejb3.component.singleton.SingletonComponent.start(SingletonComponent.java:133)
at org.jboss.as.ee.component.ComponentStartService$1.run(ComponentStartService.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
at org.jboss.threads.JBossThread.run(JBossThread.java:320)
Caused by: java.lang.IllegalArgumentException: Timestamp format must be yyyy-mm-dd hh:mm:ss[.fffffffff]
at java.sql.Timestamp.valueOf(Timestamp.java:237)
at oracle.jdbc.driver.CharCommonAccessor.getTimestamp(CharCommonAccessor.java:415)
... 18 more

As a result the timer seems created with a new id and the entry within the timer-table is duplicated.