-- Add new keys, FKs and triggers.
ALTER TABLE big_table2 ADD (
  CONSTRAINT big_table_pk2 PRIMARY KEY (id)
);

CREATE INDEX bita_created_date_i2 ON big_table2(created_date) LOCAL;

CREATE INDEX bita_look_fk_i2 ON big_table2(lookup_id) LOCAL;

ALTER TABLE big_table2 ADD (
  CONSTRAINT bita_look_fk2
  FOREIGN KEY (lookup_id)
  REFERENCES lookup(id)
);

-- Gather statistics on the new table.
EXEC DBMS_STATS.gather_table_stats(USER, 'BIG_TABLE2', cascade => TRUE);


-- Remove original table which now has the name of the interim table.
DROP TABLE big_table2;

-- Rename all the constraints and indexes to match the original names.
ALTER TABLE big_table RENAME CONSTRAINT big_table_pk2 TO big_table_pk;
ALTER TABLE big_table RENAME CONSTRAINT bita_look_fk2 TO bita_look_fk;
ALTER INDEX big_table_pk2 RENAME TO big_table_pk;
ALTER INDEX bita_look_fk_i2 RENAME TO bita_look_fk_i;
ALTER INDEX bita_created_date_i2 RENAME TO bita_created_date_i;

优点：可以根据用户的需求，以适当的方式来创建索引等依赖。

缺点：由于是用户自己创建并且切换，所以需要有一定的基础，不能漏掉任何依赖，需要考虑完全。

?

三、COPY_TABLE_DEPENDENTS + 手动创建索引

也可以通过组合使用，通过COPY_TABLE_DEPENDENTS来复制其他依赖，索引手动创建。

--排除索引
SET SERVEROUTPUT ON
DECLARE
  l_errors  NUMBER;
BEGIN
  DBMS_REDEFINITION.copy_table_dependents(
    uname            => USER,
    orig_table       => 'BIG_TABLE',
    int_table        => 'BIG_TABLE2',
    copy_indexes     => 0,
    copy_triggers    => TRUE,
    copy_constraints => TRUE,
    copy_privileges  => TRUE,
    ignore_errors    => FALSE,
    num_errors       => l_errors,
    copy_statistics  => FALSE,
    copy_mvlog       => FALSE);
    
  DBMS_OUTPUT.put_line('Errors=' || l_errors);
END;
/

--创建索引LOCAL（主键索引无法创建LOCAL本地索引）
CREATE INDEX bita_created_date_i2 ON big_table2(created_date) tablespace USERS LOCAL;

CREATE INDEX bita_look_fk_i2 ON big_table2(lookup_id) tablespace USERS LOCAL;

--重定义完成后，rename索引名称
-- Rename all the constraints and indexes to match the original names.
ALTER INDEX bita_look_fk_i2 RENAME TO bita_look_fk_i;
ALTER INDEX bita_created_date_i2 RENAME TO bita_created_date_i;