ORA-21780: Maximum number of object durations exceeded.
Cause: This typically happens if there is infinite recursion in the PL/SQL function that is being executed.
Action: User should alter the recursion condition in order to prevent infinite recursion.
根据上面的错误原因及采取的方法来看,可能是PL/SQL代码中出现了递归情况,导致更新无限次的执行下去.