--查詢表空間使用情況
SELECT Upper(F.TABLESPACE_NAME) "表空間名",
D.TOT_GROOTTE_MB "表空間大小(M)",
D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空間(M)",
To_char(Round(( D.TOT_GROOTTE_MB - F.TOTAL_BYTES ) / D.TOT_GROOTTE_MB * 100, 2), ‘990.99‘)
|| ‘%‘ "使用比",
F.TOTAL_BYTES "空閑空間(M)",
F.MAX_BYTES "最大塊(M)"
FROM (SELECT TABLESPACE_NAME,
Round(Sum(BYTES) / ( 1024 * 1024 ), 2) TOTAL_BYTES,
Round(Max(BYTES) / ( 1024 * 1024 ), 2) MAX_BYTES
FROM SYS.DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME) F,
(SELECT DD.TABLESPACE_NAME,
Round(Sum(DD.BYTES) / ( 1024 * 1024 ), 2) TOT_GROOTTE_MB
FROM SYS.DBA_DATA_FILES DD
GROUP BY DD.TABLESPACE_NAME) D
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
ORDER BY 1;
-- 查看表空間對象占用情況
Select Segment_Name "段名",
Segment_Type "段類型",
TableSpace_Name "表空間",
Sum(bytes) / 1024 / 1024 "空間占用(MB)"
From User_Extents
Group By Segment_Type, Segment_Name, TableSpace_Name
order by Sum(bytes) / 1024 / 1024 desc;

--查詢表空間的free space
select tablespace_name, count(*) AS extends,round(sum(bytes) / 1024 / 1024, 2) AS MB,sum(blocks) AS blocks from dba_free_space group BY tablespace_name;

--查詢表空間的總容量
select tablespace_name, sum(bytes) / 1024 / 1024 as MB from dba_data_files group by tablespace_name;
--查詢表空間使用率
SELECT total.tablespace_name,
Round(total.MB, 2) AS Total_MB,
Round(total.MB - free.MB, 2) AS Used_MB,
Round(( 1 - free.MB / total.MB ) * 100, 2)
|| ‘%‘ AS Used_Pct
FROM (SELECT tablespace_name,
Sum(bytes) / 1024 / 1024 AS MB
FROM dba_free_space
GROUP BY tablespace_name) free,
(SELECT tablespace_name,
Sum(bytes) / 1024 / 1024 AS MB
FROM dba_data_files
GROUP BY tablespace_name) total
WHERE free.tablespace_name = total.tablespace_name;
-- 查看表空間使用情況
select sum(bytes/1024/1024) sizeMB from dba_free_space z where z.tablespace_name=‘DATA6‘;
-- 查看索引表空間占用
select s.index_name,
s.table_name,
s.tablespace_name,
s.initial_extent,
s.next_extent
from user_indexes s
where s.index_name = ‘PK_LOG_INTER_CALLED_DETAIL‘;
-- 查看表空間文件
select file_name,tablespace_name,bytes/1024/1024 from dba_data_files where tablespace_name=‘USERS‘;
-- 查看表空間剩余
select sum(bytes/1024/1024) sizeMB from dba_free_space z where z.tablespace_name=‘USERS‘;
-- 修改表空間文件大小
alter database datafile ‘/home/oracle/oradata/easyweb/data3_01.dbf‘ resize 10000M MAXSIZE UNLIMITED;
alter database datafile ‘/home/oracle/oradata/easyweb/data6_01.dbf‘ AUTOEXTEND ON NEXT 200M MAXSIZE UNLIMITED;
-- 查看所有表空間文件
SELECT FILE_NAME,TABLESPACE_NAME,AUTOEXTENSIBLE FROM dba_data_files;
-- 設置表空間自動增加
ALTER DATABASE DATAFILE ‘/data/oradata/easyweb/users01.dbf‘ AUTOEXTEND ON; --打開自動增長
ALTER DATABASE DATAFILE ‘/data/oradata/easyweb/users01.dbf‘ AUTOEXTEND ON NEXT 200M ; --每次自動增長200m
ALTER DATABASE DATAFILE ‘/home/oracle/oradata/easyweb/users01.dbf‘ AUTOEXTEND ON NEXT 200M MAXSIZE 10000M; --每次自動增長200m，數據表最大不超過1G
--MAXSIZE UNLIMITED;

--一個表空間最大為32g，超過32g需要增加，例如：
alter tablespace ZSK ADD datafile ‘/mc_data/oradata/zsk/zsk_01.dbf‘ SIZE 30G;

[oracle]表空間情況查看、占用、擴容、使用情況、空間維護等操作