ORA-30556：either functional or bitmap join index is defined on the column to be modified
错误码
错误描述：either functional or bitmap join index is defined on the column to be modified
错误原因：An ALTER TABLE MODIFY COLUMN was issued on a column on which either a functional index or bitmap join index exists.
解决方法：Drop the functional or bitmap join index before attempting to modify the column.
向认证技术专家提问
向技术专家提问
