Oracle的在线重定义

Basic Steps for Manual Online Reorganization Commands and procedures used:
1.DBMS_REDEFINITION.CAN_REDEF_TABLE
2.CREATE TABLE …
3.DBMS_REDEFINITION.START_REDEF_TABLE
4.DBMS_REDEFINITION.COPY_TABLE_DEPENDENTS and DBMS_REDEFINITION.CONS_ORIG_PAGRAMS
SELECT object_name,base_table_name,ddl_txt from DBA_REDEFINITION_ERRORS;
6.DBMS_REDEFINITION.SYNC_INTERIM_TABLE
7.DBMS_REDEFINITION.FINISH_REDEF_TABLE
8.DROP TABLE ... PURGE
1.创建表
SQL> CREATE TABLE T (ID NUMBER PRIMARY KEY, TIME DATE);
2、插入数据
SQL> INSERT INTO T SELECT ROWNUM, CREATED from DBA_OBJECTS;
SQL> COMMIT;
3、在线重定义的表自行验证，看该表是否可以重定义
SQL> EXEC DBMS_REDEFINITION.CAN_REDEF_TABLE(user, 'T', DBMS_REDEFINITION.CONS_USE_PK);
（如果没有定义主键会提示以下错误信息）
begin dbms_redefinition.can_redef_table(user,'pft_party_profit_detail'); end;
ORA-12089: cannot online redefine table "OFSA"."PFT_PARTY_PROFIT_DETAIL" with no primary key
422ORA-06512: at "SYS.DBMS_REDEFINITION", line 8
ORA-06512: at "SYS.DBMS_REDEFINITION", line 247
ORA-06512: at line 1
出错了，该表上缺少主键，为该表建主键，再执行验证.
SQL> alter table t add constraint pk_t primary key(id);
Table altered.
4、建个和源表表结构一样的分区表，作为中间表。按日期范围分区
SQL> CREATE TABLE T_NEW
(ID NUMBER PRIMARY KEY, TIME DATE)
PARTITION BY RANGE (TIME)
   (PARTITION P1 VALUES LESS THAN (TO_DATE('2004-7-1', 'YYYY-MM-DD')),
    PARTITION P2 VALUES LESS THAN (TO_DATE('2005-1-1', 'YYYY-MM-DD')),
    PARTITION P3 VALUES LESS THAN (TO_DATE('2005-7-1', 'YYYY-MM-DD')),
    PARTITION P4 VALUES LESS THAN (MAXVALUE));
SQL> CREATE TABLE T_NEW (ID NUMBER PRIMARY KEY, TIME DATE)
PARTITION BY RANGE (TIME)
    (PARTITION P20070201 VALUES LESS THAN (TO_DATE('2007-2-1', 'YYYY-MM-DD')),
     PARTITION P20070301 VALUES LESS THAN (TO_DATE('2005-3-1', 'YYYY-MM-DD')),