對分區表添加子分區
一、需求
開發人員提出需求，有一個財務表，需要插入2019年新的數據進行報銷，但是分區表中沒有容納的分區，因此需要添加一個分區。 經過get_ddl語法，得到該表的創建語法。 現有情況：財務表A： 地市列表，報銷時間字段。 第一個分區part_a,第一個列表1,報銷時間2018年1月前的數據； 第二個分區Part_b,第一個列表2，報銷時間2018年1月前的數據； 第二個分區part_b,第一個列表2，報銷時間2018年9月份數據； ？？？此時，需要將2019年的報銷數據，插入第二個分區中，無法插入，報錯 ORA-14400: inserted partition key does not map to any partition
二、模擬測試環境
1）在11.2.0.4版本中，模擬創建列表-列表，復合分區
2）創建不同類型的索引（全局索引，全局分區索引，本地索引），為了模擬添加分區後，是否會對索引造成影響
2.1測試表
create table range_list_part_tab(id number,deal_date date,area_code varchar2(12),contents varchar2(4000))
partition by range(area_code)
subpartition by range(deal_date)
(
partition p1 values less than(‘952‘)
subpartition "part1_20190105" values less than (to_date(‘2019-01-05 00:00:00‘,‘YYYY-MM-DD HH24:MI:SS‘,‘NLS_CALENDAR=GREGORIAN‘))),
partition p2 values less than(‘970‘)
(subpartition "part2_20181205" values less than (to_date(‘2018-12-16 00:00:00‘,‘YYYY-MM-DD HH24:MI:SS‘,‘NLS_CALENDAR=GREGORIAN‘)))
;
select PARTITION_NAME,SUBPARTITION_COUNT,HIGH_VALUE,HIGH_VALUE_LENGTH,PARTITION_POSITION,
TABLESPACE_NAME from dba_tab_partitions where table_owner=‘SYS‘ and table_name=upper(‘range_list_part_tab‘)
PARTITION_ SUBPARTITION_COUNT HIGH_VALUE HIGH_VALUE_LENGTH PARTITION_POSITION TABLESPACE_NAME
---------- ------------------ -------------------- ----------------- ------------------ ------------------------------------------------------------
P1 3 ‘952‘ 5 1 SYSTEM
P2 1 ‘970‘ 5 2 SYSTEM
SYS@a11204>select PARTITION_NAME,SUBPARTITION_NAME,HIGH_VALUE,HIGH_VALUE_LENGTH,SUBPARTITION_POSITION,TABLESPACE_NAME from dba_tab_subpartitions where table_owner=‘SYS‘
and table_name=upper(‘range_list_part_tab‘);
PARTITION_ SUBPARTITION_NAME HIGH_VALUE HIGH_VALUE_LENGTH SUBPARTITION_POSITION TABLESPACE_NAME
---------- ------------------------------------------------------------ -------------------- ----------------- -------------------
P1 part1_20181205 TO_DATE(‘ 2018-12-16 83 1 SYSTEM
P1 part1_20190105 TO_DATE(‘ 2019-01-05 83 2 SYSTEM
P1 PART1_MAX MAXVALUE 8 3 SYSTEM
P2 part2_20181205 TO_DATE(‘ 2018-12-16 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIAN‘) 83 1 SYSTEM
insert into range_list_part_tab values(20,sysdate,‘952‘,‘qq‘);
ERROR at line 1:
ORA-14400: inserted partition key does not map to any partition
insert into range_list_part_tab values(10,sysdate-365,‘953‘,‘weixin‘);
2.2 創建索引
create index IND_GLOBAL_A on range_list_part_tab(id);
create index IND_PART_GLOBAL_B on range_list_part_tab(deal_date) global partition by range(deal_date)
(partition p1 values less than (to_date(‘2018-12-16 00:00:00‘,‘YYYY-MM-DD HH24:MI:SS‘,‘NLS_CALENDAR=GREGORIAN‘)) tablespace system,
partition p2 values less than (to_date(‘2019-01-05 00:00:00‘,‘YYYY-MM-DD HH24:MI:SS‘,‘NLS_CALENDAR=GREGORIAN‘)) tablespace users,
partition p3 values less than (maxvalue) tablespace sysaux);
create index IND_PART_LOCAL_C on range_list_part_tab(area_code) local;
全局索引
SQL> select index_name,STATUS,GLOBAL_STATS,TABLESPACE_NAME from dba_indexes where owner=‘SYS‘ and index_name=‘IND_GLOBAL_A‘;
INDEX_NAME STATUS GLOBAL TABLESPACE_NAME
------------------------------ ---------------- ------ ------------------------------------------------------------
IND_GLOBAL_A VALID YES SYSTEM
全局本地索引
SYS@a11204>select index_name,PARTITIONING_TYPE,SUBPARTITIONING_TYPE,PARTITION_COUNT,LOCALITY,DEF_TABLESPACE_NAME from DBA_PART_INDEXES where index_name=‘IND_PART_GLOBAL_B‘;
INDEX_NAME PARTITIONING_TYPE SUBPARTITIONING_TY PARTITION_COUNT LOCALITY DEF_TABLESPACE_NAME
-------------------- ------------------ ------------------ --------------- ------------ ------------------------------------------------------------
IND_PART_GLOBAL_B RANGE NONE 3 GLOBAL SYSTEM
select index_name,PARTITION_NAME,HIGH_VALUE,STATUS,TABLESPACE_NAME from dba_ind_partitions where index_owner=‘SYS‘ and index_name=‘IND_PART_GLOBAL_B‘
INDEX_NAME PARTITION_ HIGH_VALUE STATUS TABLESPACE_NAME
-------------------- ---------- -------------------------------------------------------------------------------- ---------------- ------------------------------------------------------------
IND_PART_GLOBAL_B P1 TO_DATE(‘ 2018-12-16 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIAN‘) USABLE SYSTEM
IND_PART_GLOBAL_B P2 TO_DATE(‘ 2019-01-05 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIAN‘) USABLE USERS
IND_PART_GLOBAL_B P3 MAXVALUE
select index_name,PARTITION_NAME,HIGH_VALUE,STATUS,TABLESPACE_NAME from dba_ind_partitions where index_owner=‘SYS‘ and index_name=‘IND_PART_LOCAL_C‘;
INDEX_NAME PARTITION_ HIGH_VALUE STATUS TABLESPACE_NAME
-------------------- ---------- -------------------- ---------------- ------------------------------------------------------------
IND_PART_LOCAL_C P1 ‘952‘ N/A
IND_PART_LOCAL_C P2 ‘970‘ N/A
本地索引
SELECT INDEX_NAME,PARTITION_NAME,SUBPARTITION_NAME,HIGH_VALUE,HIGH_VALUE_LENGTH,SUBPARTITION_POSITION,STATUS,TABLESPACE_NAME FROM DBA_IND_SUBPARTITIONS WHERE INDEX_OWNER=‘SYS‘ and INDEX_NAME=‘IND_PART_LOCAL_C‘
INDEX_NAME PARTITION_ SUBPARTITION_NAME HIGH_VALUE HIGH_VALUE_LENGTH SUBPARTITION_POSITION STATUS TABLESPACE_NAME
-------------------- ---------- -------------------- -------------------- ----------------- --------------------- ---------------- -----------------------------------------------------------
IND_PART_LOCAL_C P1 part1_20181205 TO_DATE(‘ 2018-12-16 83 1 USABLE SYSTEM
IND_PART_LOCAL_C P1 part1_20190105 TO_DATE(‘ 2019-01-05 83 2 USABLE SYSTEM
IND_PART_LOCAL_C P2 part2_20181205 TO_DATE(‘ 2018-12-16 83 1 USABLE SYSTEM
SYS@ceshi>select index_name,table_name,PARTITIONING_TYPE,SUBPARTITIONING_TYPE,PARTITION_COUNT,LOCALITY,DEF_TABLESPACE_NAME from DBA_PART_INDEXES where index_name=‘IND_PART_LOCAL_C‘;
INDEX_NAME TABLE_NAME PARTITIONING_TYPE SUBPARTITIONING_TY PARTITION_COUNT LOCALITY DEF_TABLESPACE_NAME
-------------------- ------------------------------ ------------------ ------------------ --------------- ------------ ------------------------------------------------------------
IND_PART_LOCAL_C RANGE_LIST_PART_TAB RANGE RANGE 2 LOCAL
三、添加子分區操作
ALTER TABLE range_list_part_tab
MODIFY PARTITION p1
ADD SUBPARTITION part1_max VALUES LESS THAN (MAXVALUE) ;
insert into range_list_part_tab values(20,sysdate,‘950‘,‘qq‘);
09:28:42 SYS@a11204>COMMIT;
再次查詢上述三個索引視圖：均為有效，因此可忽略。添加子分區對索引無影響。
***其它**************
刪除子分區
SYS@a11204>ALTER TABLE range_list_part_tab drop SUBPARTITION part1_max ;
Table altered.
刪除子分區，子分區數據均自動刪除
select * from range_list_part_tab
ID DEAL_DATE AREA_CODE CONTENTS
---------- ------------------- ------------------------ --------------------
10 2018-02-26 09:17:19 953 weixin
ALTER TABLE range_list_part_tab MODIFY PARTITION p1 ADD SUBPARTITION part1_max VALUES LESS THAN (MAXVALUE) update global index ;
***添加分區，申請的鎖資源*******************
session_1
insert into range_list_part_tab values(30,sysdate-90,‘940‘,‘en‘);
insert into range_list_part_tab values(80,‘2018-12-01‘,‘960‘,‘ha‘);
session_2
SQL> alter session set ddl_lock_timeout=600;
ALTER TABLE range_list_part_tab MODIFY PARTITION p1 ADD SUBPARTITION part1_max VALUES LESS THAN (MAXVALUE) ;
不受影響，並沒有對表申請很嚴重的鎖。
具體分區表添加子分區，申請的鎖資源，繼續測試。
session_1
10:57:33 SYS@a11204>LOCK TABLE range_list_part_tab IN EXCLUSIVE MODE;
session_2，被阻塞
SQL> SQL> ALTER TABLE range_list_part_tab MODIFY PARTITION p1 ADD SUBPARTITION part1_max VALUES LESS THAN (MAXVALUE) ;
查詢鎖模式類型
SQL> select sid,type,id1,lmode,request,ctime,block from v$Lock where type in(‘TX‘,‘TM‘);
SID TYPE ID1 LMODE REQUEST CTIME BLOCK
---------- ---- ---------- ---------- ---------- ---------- ----------
135 TM 18 3 0 47 0
135 TM 98881 0 3 47 0
130 TM 98881 6 0 72 1
135 TX 262159 6 0 47 0
select owner,object_name,object_type,object_id from dba_objects where object_id in(‘18‘,‘98881‘)
OWNER OBJECT_NAME OBJECT_TYPE OBJECT_ID
-------------------- -------------------- -------------------- ----------
SYS RANGE_LIST_PART_TAB TABLE 98881
SYS OBJ$ TABLE 18
添加子分區的操作，需要申請RANGE_LIST_PART_TAB 表的TM3號鎖，測試表提前添加TM6號鎖，被阻塞。因此添加子分區的操作，等同於dml申請TM鎖需求，影響很小。
***********對列表子分區操作，無法執行update global維護索引操作，還好之前測試索引不受影響，添加子分區對索引無影響。
ALTER TABLE range_list_part_tab MODIFY PARTITION p1 ADD SUBPARTITION part1_max VALUES LESS THAN (MAXVALUE) update global indexes ;
*
ERROR at line 1:
ORA-14633: Index maintainence clause not allowed for ADD list subpartition to a
Composite partitioned table
對分區表添加子分區