oracle 常用数据库表空间数据文件SQL

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---------------------查看Oracle数据库中表空间信息
select 
a.a1 表空间名称,
c.c2 类型,
c.c3 区管理,
b.b2/1024/1024 表空间大小M,
(b.b2-a.a2)/1024/1024 已使用M,
substr((b.b2-a.a2)/b.b2*100,1,5) 利用率
from 
(select  tablespace_name a1, sum(nvl(bytes,0)) a2 from dba_free_space group by tablespace_name) a,
(select tablespace_name b1,sum(bytes) b2 from dba_data_files group by tablespace_name) b,
(select tablespace_name c1,contents c2,extent_management c3  from dba_tablespaces) c 
where a.a1=b.b1 and c.c1=b.b1;
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-----------------------查看Oracle数据库中数据文件信息
select 
b.file_name 物理文件名,
b.tablespace_name 表空间,
b.bytes/1024/1024 大小M,
(b.bytes-sum(nvl(a.bytes,0)))/1024/1024  已使用M,
substr((b.bytes-sum(nvl(a.bytes,0)))/(b.bytes)*100,1,5)  利用率 
from dba_free_space a,dba_data_files b 
where a.file_id=b.file_id 
group by b.tablespace_name,b.file_name,b.bytes 
order by b.tablespace_name;

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--- oracle 索引表

select * from user_indexes where table_name='TRX_DOCS_INDX_MGR_DEBUG' ;

--- 索引详细表列

select * from user_ind_columns where index_name=upper('&index_name'); // SQL dev open dialog for input value