在Oracle中删除完全重复的数据，可以通过以下步骤实现：
SELECT ROWID, ROWNUM
FROM (
SELECT ROWID, ROWNUM() OVER (PARTITION BY column1, column2, ... ORDER BY ROWID) AS r
FROM your_table
) t
WHERE r > 1;
DELETE FROM your_table
WHERE ROWID IN (
SELECT ROWID
FROM (
SELECT ROWID, ROWNUM() OVER (PARTITION BY column1, column2, ... ORDER BY ROWID) AS r
FROM your_table
) t
WHERE r > 1
);
通过以上步骤，可以找到并删除表中的完全重复数据。在执行删除操作之前，请务必备份数据以防数据丢失。
