在Oracle數據庫中，您可以使用以下方法刪除重復數據：
DELETE FROM your_table
WHERE ROWID NOT IN
(SELECT MIN(ROWID)
FROM your_table
GROUP BY column1, column2, ...);
DELETE FROM your_table
WHERE ROWID IN
(SELECT ROWID
FROM
(SELECT ROWID, ROW_NUMBER() OVER (PARTITION BY column1, column2, ... ORDER BY ROWID) rn
FROM your_table)
WHERE rn > 1);
請注意，在執行刪除操作之前，請務必備份數據以防意外發生。
