Oracle 11g 修改表的所屬表空間

應領導要求，需要將部分表的所屬表空間進行更改，目的為了整理使用者。

select tablespace_name,count(*) from dba_tables where owner = '***' group by tablespace_name order by 2;

select * from dba_tables where owner = '***' and tablespace_name = 'users';

select table_name,num_rows from dba_tables where owner = '***' and tablespace_name = 'users' order by 2 desc;

select t.table_name as "表名",

t.num_rows as "錶行數",
nvl(s.partition_name, 0) as "分割槽名",
s.segment_type "段型別",
s.bytes / 1024 / 1024 as "段大小(mb)"
from dba_tables t, dba_segments s
where t.table_name = s.segment_name(+)
and t.owner = '***'
and t.tablespace_name = 'users'
order by s.bytes
desc;

select count(*) from(

select table_name
from dba_tables
where owner = '***'
and table_name not like 't\_%' escape '\'
and table_name not like 'jf\_%' escape '\'
and table_name not like 'payment\_%' escape '\'
and table_name not like 'prom%'
and table_name <> 'customer_buy_his');

select index_name,index_type,table_name,table_owner,table_type,uniqueness,status from dba_indexes where owner = '***' and tablespace_name = 'users';

select 'alter table '||table_name||' move tablespace ylpw;' from dba_tables where tablespace_name = 'users' and owner = '***';

select 'alter index ' ||index_name||' rebuild online;' from dba_indexes where table_owner = 'yl2012' and status <> 'valid';

1、要考慮move後的索引重建問題

2、盡量放在業務低峰期或者夜間進行

3、對於大表考慮重建索引時占用的cpu跟臨時表空間的問題

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