标签：div ima -- oba lin rem 检查 操作 glob
一直知道对分区表的DDL 操作可能导致索引失效，但是还没做过总结，今天稍微总结下。
create table test_part ( ID NUMBER(20) not null, REMARK VARCHAR2(1000), create_time DATE ) PARTITION BY RANGE (CREATE_TIME) INTERVAL (numtoyminterval(1, ‘year‘)) (partition part_t01 values less than(to_date(‘2018-11-01‘, ‘yyyy-mm-dd‘))); --创建主键 alter table test_part add constraint INDEX_PK primary key (ID) using INDEX; --创建全局索引 create index INDEX_1 on TEST_PART (REMARK); --创建本地索引 create index INDEX_2 on TEST_PART (create_time) LOCAL;
INSERT INTO test_part VALUES(1,‘1‘,TO_DATE(‘20181001‘,‘YYYYMMDD‘)); INSERT INTO test_part VALUES(2,‘2‘,TO_DATE(‘20181101‘,‘YYYYMMDD‘)); INSERT INTO test_part VALUES(3,‘3‘,TO_DATE(‘20181201‘,‘YYYYMMDD‘)); INSERT INTO test_part VALUES(4,‘4‘,TO_DATE(‘20191201‘,‘YYYYMMDD‘)); COL HIGH_VALUE FOR A100 SELECT PARTITION_NAME,HIGH_VALUE FROM USER_TAB_PARTITIONS WHERE TABLE_NAME=‘TEST_PART‘; PARTITION_NAME HIGH_VALUE -------------------- ---------------------------------------------------------------------------------------------------- PART_T01 TO_DATE(‘ 2018-11-01 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIA SYS_P52 TO_DATE(‘ 2019-11-01 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIA SYS_P53 TO_DATE(‘ 2020-11-01 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIA SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK VALID INDEX_1 VALID INDEX_2 N/A SQL> SELECT INDEX_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_2 USABLE INDEX_2 USABLE INDEX_2 USABLE
可见，增加分区对所有索引都没影响
SQL> alter table TEST_PART truncate partition PART_T01; Table truncated. SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK UNUSABLE INDEX_1 UNUSABLE INDEX_2 N/A SQL> SELECT INDEX_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_2 USABLE INDEX_2 USABLE INDEX_2 USABLE
Truncate 分区会导致全局索引，主键失效。分区索引不受影响
SQL> alter index INDEX_PK rebuild online; Index altered. SQL> alter index INDEX_1 rebuild online; Index altered. SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK VALID INDEX_1 VALID INDEX_2 N/A SQL> alter table TEST_PART truncate partition SYS_P52 update global indexes; Table truncated. SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK VALID INDEX_1 VALID INDEX_2 N/A
Truncate update global indexes 对索引无影响
INSERT INTO test_part VALUES(1,‘1‘,TO_DATE(‘20181001‘,‘YYYYMMDD‘)); INSERT INTO test_part VALUES(2,‘2‘,TO_DATE(‘20181101‘,‘YYYYMMDD‘)); INSERT INTO test_part VALUES(3,‘3‘,TO_DATE(‘20181201‘,‘YYYYMMDD‘)); SQL> ALTER TABLE TEST_PART MOVE PARTITION PART_T01; Table altered. SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK UNUSABLE INDEX_1 UNUSABLE INDEX_2 N/A SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK UNUSABLE INDEX_1 UNUSABLE INDEX_2 N/A SQL> SELECT INDEX_NAME,PARTITION_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; INDEX_NAME PARTITION_NAME STATUS ------------------------------ -------------------- -------- INDEX_2 PART_T01 UNUSABLE INDEX_2 SYS_P52 USABLE INDEX_2 SYS_P53 USABLE
move 分区会导致全局索引和分区所在的本地索引失效。
1.修复： ================== alter index INDEX_PK rebuild online; alter index INDEX_1 rebuild online; alter index INDEX_2 rebuild partition PART_T01 online; SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK VALID INDEX_1 VALID INDEX_2 N/A SQL> SELECT INDEX_NAME,PARTITION_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; INDEX_NAME PARTITION_NAME STATUS ------------------------------ -------------------- -------- INDEX_2 PART_T01 USABLE INDEX_2 SYS_P52 USABLE INDEX_2 SYS_P53 USABLE 2.Move 分区 ================== SQL> ALTER TABLE TEST_PART MOVE PARTITION PART_T01 update global indexes; Table altered. SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK VALID INDEX_1 VALID INDEX_2 N/A SQL> SELECT INDEX_NAME,PARTITION_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; INDEX_NAME PARTITION_NAME STATUS ------------------------------ -------------------- -------- INDEX_2 PART_T01 UNUSABLE INDEX_2 SYS_P52 USABLE INDEX_2 SYS_P53 USABLE
ALTER INDEX INDEX_2 REBUILD PARTITION PART_T01 ONLINE; ALTER TABLE TEST_PART COMPRESS PARTITION PART_T01; ALTER TABLE TEST_PART MOVE PARTITION PART_T01 COMPRESS FOR OLTP;
alter index INDEX_PK rebuild online; alter index INDEX_1 rebuild online; alter index INDEX_2 rebuild partition PART_T01 online; SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; SELECT INDEX_NAME,PARTITION_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; SQL> ALTER TABLE TEST_PART DROP PARTITION PART_T01; ALTER TABLE TEST_PART DROP PARTITION PART_T01 * ERROR at line 1: ORA-14758: Last partition in the range section cannot be dropped SQL> COL HIGH_VALUE FOR A100 SQL> SELECT PARTITION_NAME,HIGH_VALUE FROM USER_TAB_PARTITIONS WHERE TABLE_NAME=‘TEST_PART‘; PARTITION_NAME HIGH_VALUE -------------------- ---------------------------------------------------------------------------------------------------- PART_T01 TO_DATE(‘ 2018-11-01 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIA SYS_P52 TO_DATE(‘ 2019-11-01 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIA SYS_P53 TO_DATE(‘ 2020-11-01 00:00:00‘, ‘SYYYY-MM-DD HH24:MI:SS‘, ‘NLS_CALENDAR=GREGORIA
第一个分区不能被删除
ALTER TABLE TEST_PART DROP PARTITION SYS_P53; SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK UNUSABLE INDEX_1 UNUSABLE INDEX_2 N/A SQL> SELECT INDEX_NAME,PARTITION_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; INDEX_NAME PARTITION_NAME STATUS ------------------------------ -------------------- -------- INDEX_2 PART_T01 USABLE INDEX_2 SYS_P52 USABLE
Drop 分区导致全局索引失效，分区索引不受影响
alter index INDEX_PK rebuild online; alter index INDEX_1 rebuild online; alter index INDEX_2 rebuild partition PART_T01 online; SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; SELECT INDEX_NAME,PARTITION_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; ALTER TABLE TEST_PART DROP PARTITION SYS_P52 UPDATE GLOBAL INDEXES; SQL> SELECT INDEX_NAME,STATUS FROM USER_INDEXES WHERE TABLE_NAME=‘TEST_PART‘; INDEX_NAME STATUS ------------------------------ -------- INDEX_PK VALID INDEX_1 VALID INDEX_2 N/A SQL> SELECT INDEX_NAME,PARTITION_NAME,STATUS FROM USER_IND_PARTITIONS WHERE INDEX_NAME=‘INDEX_2‘; INDEX_NAME PARTITION_NAME STATUS ------------------------------ -------------------- -------- INDEX_2 PART_T01 USABLE
Drop upgrade global indexes 分区所有索引都不受影响
标签：div ima -- oba lin rem 检查 操作 glob
原文地址：https://www.cnblogs.com/plluoye/p/12217132.html
