在线瞎定义

EXEC DBMS_REDEFINITION.CAN_REDEF_TABLE('A','SMALL2',DBMS_REDEFINITION.CONS_USE_ROWID)

drop table BIG_PART;
create table BIG_PART
partition by RANGE(LAST_DDL_TIME)
INTERVAL (NUMTODSINTERVAL(1,'day')) STORE IN (users)
(
  PARTITION part20220901 VALUES LESS THAN(to_date('2022-09-02 00:00:00','yyyy-mm-dd hh24:mi:ss'))
)
as select * from SMALL2 WHERE 1=2;

EXEC DBMS_REDEFINITION.START_REDEF_TABLE('A', 'SMALL2', 'BIG_PART', '', dbms_redefinition.CONS_USE_ROWID)

DECLARE
  num_errors PLS_INTEGER;
BEGIN
  DBMS_REDEFINITION.COPY_TABLE_DEPENDENTS('A', 'SMALL2','BIG_PART',
  DBMS_REDEFINITION.CONS_ORIG_PARAMS, TRUE, TRUE, TRUE, TRUE, num_errors);
END;
/

select object_name, base_table_name, ddl_txt from DBA_REDEFINITION_ERRORS;

EXEC DBMS_REDEFINITION.SYNC_INTERIM_TABLE('A', 'SMALL2','BIG_PART')
EXEC DBMS_REDEFINITION.FINISH_REDEF_TABLE('A', 'SMALL2','BIG_PART')

select owner,object_name,object_type from dba_objects where owner='A' ORDER BY 2;