ORA-26577: PRESERVE TABLE can not be used when dropping old style materialized view string.string
Cause: The materialized view consists of a view and a container table.
Action: Drop the materialized view without PRESERVE TABLE option.
ORA-26577: PRESERVE TABLE 不能用于删除旧风格的材料视图字符串。
1.更新数据表。
2.创建新一代材料视图。
3.使用DROP MATERIALIZED VIEW选项删除旧视图。