ORA-14402，遇到的一个分区字段更新问题

对一个分区表，分区字段为date类型的，更新这个字段内容时 提示：

ora-14402，看看帮助怎么说：
oerr ora 14402
14402, 00000, "updating partition key column would cause a partition change"
// *Cause:  An UPDATE statement attempted to change the value of a partition 
//          key column causing migration of the row to another partition
// *Action: Do not attempt to update a partition key column or make sure that
//          the new partition key is within the range containing the old
//          partition key.

解决方法：
alter table t1 enable row movement;