Oracle 查看表空間的大小及使用情況sql語句

時(shí)間：2023-05-07 20:12:01 | 來源：網(wǎng)站運(yùn)營

時(shí)間：2023-05-07 20:12:01 來源：網(wǎng)站運(yùn)營

Oracle 查看表空間的大小及使用情況sql語句：--1、查看表空間的名稱及大小

SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size

FROM dba_tablespaces t, dba_data_files d

WHERE t.tablespace_name = d.tablespace_name

GROUP BY t.tablespace_name;

--2、查看表空間物理文件的名稱及大小

SELECT tablespace_name,

file_id,

file_name,

round(bytes / (1024 * 1024), 0) total_space

FROM dba_data_files

ORDER BY tablespace_name;

--3、查看回滾段名稱及大小

SELECT segment_name,

tablespace_name,

r.status,

(initial_extent / 1024) initialextent,

(next_extent / 1024) nextextent,

max_extents,

v.curext curextent

FROM dba_rollback_segs r, v$rollstat v

WHERE r.segment_id = v.usn(+)

ORDER BY segment_name;

--4、查看控制文件

SELECT NAME FROM v$controlfile;

--5、查看日志文件

SELECT MEMBER FROM v$logfile;

--6、查看表空間的使用情況

SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name

FROM dba_free_space

GROUP BY tablespace_name;

SELECT a.tablespace_name,

a.bytes total,

b.bytes used,

c.bytes free,

(b.bytes * 100) / a.bytes "% USED ",

(c.bytes * 100) / a.bytes "% FREE "

FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c

WHERE a.tablespace_name = b.tablespace_name

AND a.tablespace_name = c.tablespace_name;

--7、查看數(shù)據(jù)庫庫對象

SELECT owner, object_type, status, COUNT(*) count#

FROM all_objects

GROUP BY owner, object_type, status;

--8、查看數(shù)據(jù)庫的版本　

SELECT version

FROM product_component_version

WHERE substr(product, 1, 6) = 'Oracle';

--9、查看數(shù)據(jù)庫的創(chuàng)建日期和歸檔方式

SELECT created, log_mode, log_mode FROM v$database;

--1G=1024MB

--1M=1024KB

--1K=1024Bytes

--1M=11048576Bytes

--1G=1024*11048576Bytes=11313741824Bytes

SELECT a.tablespace_name "表空間名",

total "表空間大小",

free "表空間剩余大小",

(total - free) "表空間使用大小",

total / (1024 * 1024 * 1024) "表空間大小(G)",

free / (1024 * 1024 * 1024) "表空間剩余大小(G)",

(total - free) / (1024 * 1024 * 1024) "表空間使用大小(G)",

round((total - free) / total, 4) * 100 "使用率 %"

FROM (SELECT tablespace_name, SUM(bytes) free

FROM dba_free_space

GROUP BY tablespace_name) a,

(SELECT tablespace_name, SUM(bytes) total

FROM dba_data_files

GROUP BY tablespace_name) b

WHERE a.tablespace_name = b.tablespace_name