正如你所说的，它发生在任何时候， as：

• 导出/导入表格


• ALTER TABLE XXXX MOVE


• ALTER表XXXX收缩空间


• 回流表XXXX


• 分割分区


• 更新值以便移动到新分区


• 合并两个分区

在索引组织表中，那么对主键的更新也会给你一个不同的ROWID。

AFAIK ROWID in Oracle represents physical location of a record in appropriate datafile. In which cases ROWID of a record may change ?

The one known to me is UPDATE on partitioned table that "moves" the record to another partition.

Are there another cases ? Most of our DBs are Oracle 10.

As you have said, it occurs anytime the row is physically moved on disk, such as:

• Export/import of the table
• ALTER TABLE XXXX MOVE
• ALTER TABLE XXXX SHRINK SPACE
• FLASHBACK TABLE XXXX
• Splitting a partition
• Updating a value so that it moves to a new partition
• Combining two partitions

If is in an index organized table, then an update to the primary key would give you a different ROWID as well.