PLSQL_批量压缩表Table Compress（案例）

​2015-04-01 Created By BaoXinjian​

​一、摘要​

表空间迁移并压缩案例 

​二、案例​

Step1. 并发转移表空间

set timing on;
alter session set parallel_degree_limit=192;
alter session enable parallel ddl;
alter session enable parallel dml;
alter table inv.mtl_material_transactions move partition plegacy tablespace large_journal_legacy compress for archive low;

Step2. 并发重建主键

set timing on;
alter session set parallel_degree_limit=192;
alter session enable parallel ddl;
alter session enable parallel dml;
alter table inv.mtl_material_transactions drop constraint inventory_item_pk cascade;
drop index mtl.inventory_item_pk;
create unique index mtl.inventory_item_pk on inv.mtl_material_transactions(inventory_item_id) tablespace mtl_large_index;
alter table inv.mtl_material_transactions add constraint inventory_item_pk primary key inventory_item_id using index inv.inventory_item_pk;
exit;

Step3. 并发重建索引

set timing on;
alter session set parallel_degree_limit=192;
alter session enable parallel ddl;
alter session enable parallel dml;
drop index inv.material_item_index01;
create index inv.materil_item_index01 on inv.mtl_material_transaction(inventory_item_id) tablespace mtl_large_index;
exit;

Thanks and Regards