参考MOS文档:How To Partition Existing Table Using DBMS_REDEFINITION (Doc ID 472449.1) Lucifer三思而后行 2021/08/17 2K0 Oracle普通表->分区表转换(9亿数据量) 日志服务 某普通表T,由于前期设计不当没有分区,如今几年来的数据量已达9亿+, 空间占用大约350G,在线重定义为分区
(2)Tables containing historical data, in which new data is added into the newest partition. A typical example is a historical table where only the current month's data is updatable and the other 11 months are read only. 在oracle 10g中最多支持:1024k-1个分区: Tables can be partitioned int...
SELECT a.index_owner,a.index_name,b.index_type,a.partition_name,a.status,b.table_name,a.tablespace_name, 'alter index '||a.index_owner||'.'||a.index_name||' rebuild partition '||a.partition_name||' ;' rebuild_index FROM dba_ind_partitions a, dba_indexes b WHERE a.index_name ...
''ALTER TABLE '||INPUT_TABLE||' DROP PARTITION '||P.PARTITION_NAME||'''; END IF; END;';ENDLOOP;END;/ 切换Tablespace 有的时候,需要将partition迁移到新的tablespace上,比如将不常用的分区移走,加快访问速度。 ALTERTABLETABLE_NAME MOVEPARTITIONPARTITION_NAME TABLESPACE TABLESPACE_NAME; A schema is...
1) Export your table: $ exp <user_name>/<pwd> tables=TEST_TABLE1 file=exp.dmp 2) Drop the table: SQL> drop table TEST_TABLE1; 3) Recreate the table with partitions: SQL> create table TEST_TABLE1 (qty number(3), name varchar2(15)) partition by range (qty)(partition p1 values ...
PARTITION CUS_PART2 VALUES LESS THAN (maxvalue) TABLESPACE part_Data3 ) 2、LIST 列表分区 说明:该分区的特点是某列的值只有有限个值,基于这样的特点我们可以采用列表分区。 规则:默认分区为DEFAULT,若不添加DEFAULT的分区插入数值不属于所设置的分区会报错。 例一、姓氏 CREATE TABLE PART_TAB_CUSTOMER_BY_LI...
CAN_REDEF_TABLE:检查表是否可以进行重定义,存储过程执行成功代表可以进行重定义; COPY_TABLE_DEPENDENTS:同步索引和依赖的对象(包括索引、约束、触发器、权限等); FINISH_REDEF_TABLE:完成在线重定义; REGISTER_DEPENDENTS_OBJECTS:注册依赖的对象,如索引、约束、触发器等; ...
CREATE TABLE "T_RANGE_0" ( "A" NUMBER, "B" NUMBER NOT NULL, PRIMARY KEY ("B", "A") )PARTITION BY RANGE ("A")(... ); CREATE UNIQUE INDEX ON "T_RANGE_0"(B); 主键列未包含分区列 分区列是物理列 加入至主键列,组成联合主键 原始的主键列添加全局唯一...
The first is the existing table, and there is no method that can be directly converted into partition tables. However, Oracle provides the function of online redefinition tables, which can be used to transform ordinary tables into partitioned tables. You can refer to this example: http://blog...
课程大纲-Oracle分区表(Partitioned Table)使用详解 1 Oracle分区表及其应用场景介绍 [28:22] 2 范围分区表(Range Partitioning) [33:34] 3 列表分区表(List Partitioning) [33:06] 4 哈希分区表(Hash Partitioning) [29:55] 5 复合分区表(Composite Partitioning) [23:43] 6 Interval分区表(IntervalPartition...