但如果确实想进行字符集改变，则可通过以下几步来实现：



备份数据库后删除原数据（可物理备份，如使用Export，请注意确保字符集不发生转换或数据无损失）；

使用Internal用户更新sys.props$表中的字符集-But if really want to change the character set, you can be achieved through the following steps: Back up the database to delete the original data (which can be physical backup, such as using Export, please note that the character set conversion or data does not occur without loss)　use the Internal Users Update sys.props $ table character set