ORA-27419: unable to determine valid execution

admin

ORA-27419: unable to determine valid execution date from repeat interval
Cause: The specified repeatinterval contained conflicting clauses that made it
impossible to ever find a matching date, e.g.,
'FREQ=YEARLY;BYMONTH=FEB;BYMONTHDAY=31'. Alternatively, the
scheduler reached its maximum number of attempts to try to find a valid
execution date. This occurs when theoretically there is a valid execution datefar in
the future, but the scheduler took too many attempts to determine this date.
Action: Remove theconflicting clauses, or simplify the repeat interval so that it is
easier to determine the next execution date.