excluir linhas duplicadas do Oracle

Como excluir linhas duplicadas do Oracle

create table my_table1 as select distinct * from my_table;
drop my_table;
rename my_table1 to my_table;

SQL> select * from mytest;
ID NAME
------
1 TST 
2 TST 
1 TST

SQL> create table mytest1 as select distinct * from mytest;
Table created.

SQL> select * from mytest1;
ID NAME
-------
2 TST 
1 TST
SQL> drop table mytest;
Table dropped.
SQL> rename mytest1 to mytest;
Table renamed.
SQL> select * from mytest;
ID NAME
-------
2 TST
1 TST

Delete from my_table where rowid not in (
select max(rowid) from my_table group by my_col_name );

DELETE FROM my_table A WHERE ROWID > (SELECT min(rowid) FROM my_table B WHERE A.key_values = B.key_values);

delete from my_table t1
where exists (select 'x' from my_table t2
where t2.key_value1 = t1.key_value1
and t2.key_value2 = t1.key_value2
and t2.rowid > t1.rowid);

delete from my_table
where rowid in
(select rid
from
( select
rowid rid,
row_number() over (partition by column_name order by rowid) rn
from my_table)
where rn <> 1
)

como encontrar registros duplicados no oracle usando rowid

select * from my_table
where rowid not in
(select max(rowid) from my_table group by column_name);