使用在线重定义方式将普通表转换成分区表

create table li.p_table(id_n number,date_n date);

insert into li.p_table values (1,to_date('2013-01-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (2,to_date('2013-02-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (3,to_date('2013-03-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (4,to_date('2013-04-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (5,to_date('2013-05-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (6,to_date('2013-06-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (7,to_date('2013-07-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (8,to_date('2013-08-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (9,to_date('2013-09-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (10,to_date('2013-10-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (11,to_date('2013-11-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (12,to_date('2013-12-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (13,to_date('2014-01-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

insert into li.p_table values (14,to_date('2014-02-02 01:01:01','yyyy-mm-dd hh24:mi:ss'));

commit;

create table li.p_partion_table(id_n number,date_n date)

PARTITION BY RANGE (date_n)

(PARTITION P_201301 VALUES LESS THAN (TO_DATE('2013-02-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201302 VALUES LESS THAN (TO_DATE('2013-03-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201303 VALUES LESS THAN (TO_DATE('2013-04-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201304 VALUES LESS THAN (TO_DATE('2013-05-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201305 VALUES LESS THAN (TO_DATE('2013-06-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201306 VALUES LESS THAN (TO_DATE('2013-07-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201307 VALUES LESS THAN (TO_DATE('2013-08-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201308 VALUES LESS THAN (TO_DATE('2013-09-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201309 VALUES LESS THAN (TO_DATE('2013-10-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201310 VALUES LESS THAN (TO_DATE('2013-11-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201311 VALUES LESS THAN (TO_DATE('2013-12-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201312 VALUES LESS THAN (TO_DATE('2014-01-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION P_201401 VALUES LESS THAN (TO_DATE('2014-02-01 00:00:00','yyyy-mm-dd hh24:mi:ss')),

PARTITION MAXVALUE VALUES LESS THAN (MAXVALUE));

EXEC DBMS_REDEFINITION.CAN_REDEF_TABLE(UNAME=>'LI',TNAME=>'p_table',OPTIONS_FLAG=>DBMS_REDEFINITION.CONS_USE_ROWID);

EXEC DBMS_REDEFINITION.START_REDEF_TABLE(UNAME=>'LI',ORIG_TABLE=>'p_table',INT_TABLE=>'p_partion_table',OPTIONS_FLAG=>DBMS_REDEFINITION.CONS_USE_ROWID);

EXEC DBMS_REDEFINITION.FINISH_REDEF_TABLE(UNAME=>'LI',ORIG_TABLE=>'p_table',INT_TABLE=>'p_partion_table');

select table_owner,table_name,partition_name from dba_tab_partitions where table_name='P_TABLE' and table_owner='LI'

结果如下：

LI P_TABLE MAXVALUE

LI P_TABLE P_201301

LI P_TABLE P_201302

LI P_TABLE P_201303

LI P_TABLE P_201304

LI P_TABLE P_201305

LI P_TABLE P_201306

LI P_TABLE P_201307

LI P_TABLE P_201308

LI P_TABLE P_201309

LI P_TABLE P_201310

LI P_TABLE P_201311

LI P_TABLE P_201312

LI P_TABLE P_201401

select * from li.p_table partition (P_201301);

结果：

1 2013/1/2 1:01:01

select * from li.p_table partition (P_201303);

结果：

3 2013/3/3 1:01:01

select table_owner,table_name,partition_name from dba_tab_partitions where table_name='P_PARTION_TABLE' and table_owner='LI'

结果：空

select owner,table_name,partitioned from dba_tables where table_name='P_PARTION_TABLE' and owner='LI';

结果：

LI P_PARTION_TABLE NO