3.2.7.2 (分区表enable)—(非分区表diable keep index)—exchange--exchange

解释：

首先：分区表primary key是enable的，非分区表primary key是disable的；

其次：交换分区且包括including indexes;

然后：再次交换分区包括including indexes;

SQL> alter table t_no_par disable constraint ind_t_no_par keep index;

表已更改。

--此时将非分区表的primary key diable掉，然后指定keep index

SQL> select INDEX_NAME,PARTITION_NAME,STATUS from User_Ind_Partitions where INDEX_name='IND_T_PAR_RANGE';

INDEX_NAMEPARTITION_NAMESTATUS

------------------------------ ------------------------------ --------

IND_T_PAR_RANGEP_T_PAR_RANGE_0USABLE

IND_T_PAR_RANGEP_T_PAR_RANGE_1USABLE

SQL> SELECT index_name,index_type,status FROM USER_INDEXES WHERE index_NAME in ('IND_T_NO_PAR');

INDEX_NAMEINDEX_TYPESTATUS

------------------------------ --------------------------- --------

IND_T_NO_PARNORMALVALID

--索引仍然有效

SQL> select constraint_name,constraint_type,status,validated from User_Constraints where constraint_name in ('IND_T_NO_PAR','IND_T_PAR_RANGE');

CONSTRAINT_NAMEC STATUSVALIDATED

------------------------------ - -------- -------------

IND_T_PAR_RANGEP ENABLEDVALIDATED

IND_T_NO_PARP DISABLED NOT VALIDATED

--约束已经disable了，且not validated

SQL> select * from t_no_par;

未选定行

SQL> select * from t_par_range;

TIMEIDCITY_IDVALUE1 VALUE2

-------------- ---------- ---------- ---------- ----------

01-3月-111101 a

01-4月-112202 b

SQL> alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par including indexes;

表已更改。

--将分区表与非分区表做第一次交换，注意执行此命令前，各自约束和索引的状态

SQL> SELECT index_name,index_type,status FROM USER_INDEXES WHERE index_NAME in ('IND_T_NO_PAR');

INDEX_NAMEINDEX_TYPESTATUS

------------------------------ --------------------------- --------

IND_T_NO_PARNORMALVALID

SQL> select INDEX_NAME,PARTITION_NAME,STATUS from User_Ind_Partitions where INDEX_name='IND_T_PAR_RANGE';

INDEX_NAMEPARTITION_NAMESTATUS

------------------------------ ------------------------------ --------

IND_T_PAR_RANGEP_T_PAR_RANGE_0USABLE

IND_T_PAR_RANGEP_T_PAR_RANGE_1USABLE

--交换之后，各自约束和索引的状态

SQL> select * from t_no_par;

TIMEIDCITY_IDVALUE1 VALUE2

-------------- ---------- ---------- ---------- ----------

01-3月-111101 a

SQL> select * from t_par_range;

TIMEID CITY_IDVALUE1 VALUE2

-------------- ---------- ---------- ---------- ----------

01-4月-112202 b

SQL> select constraint_name,constraint_type,status,validated from User_Constraints where constraint_name in ('IND_T_NO_PAR','IND_T_PAR_RANGE');

CONSTRAINT_NAMEC STATUSVALIDATED

------------------------------ - -------- -------------

IND_T_PAR_RANGEP ENABLEDVALIDATED

IND_T_NO_PARP DISABLED NOT VALIDATED

SQL> select * from t_no_par;

TIMEIDCITY_IDVALUE1 VALUE2

-------------- ---------- ---------- ---------- ----------

01-3月-111101 a

SQL> select * from t_par_range;

TIMEIDCITY_IDVALUE1 VALUE2

-------------- ---------- ---------- ---------- ----------

01-4月-112202 b

SQL> alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par including indexes;

alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par including indexes

*

第1行出现错误:

ORA-14097: ALTER TABLE EXCHANGE PARTITION中的列类型或大小不匹配

--再想将刚交换到非分区表的数据交换回去，已经不可能了

SQL> alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par including indexes;

alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par including indexes

*

第1行出现错误:

ORA-14097: ALTER TABLE EXCHANGE PARTITION中的列类型或大小不匹配

SQL> select * from t_no_par;

TIMEIDCITY_IDVALUE1 VALUE2

-------------- ---------- ---------- ---------- ----------

01-3月-111101 a

SQL> select * from t_par_range;

TIMEIDCITY_IDVALUE1 VALUE2

-------------- ---------- ---------- ---------- ----------

01-4月-112202 b

SQL> alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par ;

alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par

*

第1行出现错误:

ORA-14097: ALTER TABLE EXCHANGE PARTITION中的列类型或大小不匹配

SQL> alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par without validation;

alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par without validation

*

第1行出现错误:

ORA-14097: ALTER TABLE EXCHANGE PARTITION中的列类型或大小不匹配

--注意到，无论使用何种添加选项手段，都已经不行了

SQL> alter table t_no_par enable constraint ind_t_no_par;

表已更改。

SQL> alter table t_par_range exchange partition p_t_par_range_0 with table t_no_par including indexes;

表已更改。

--而一旦再次enable非分区表的primary key约束，又可以做数据交换了

SQL> select * from t_no_par;

未选定行

SQL> select * from t_par_range;

TIMEIDCITY_IDVALUE1 VALUE2

-------------- ---------- ---------- ---------- ----------

01-3月-111101 a

01-4月-112202 b