错误报告:SQL 错误: ORA-00972: 标识符过长00972. 00000 - "identifier is too long"*Cause: An identifier with more than 30 characters was specified.*Action: Specify at most 30 characters.我把视图名称修改成30个字符以下的就可以了,请问如何去掉这个30个字符的限制?