Oracle查看表空间的⼤⼩及使⽤情况sql语句
表空间使⽤情况包括：查看表空间的名称及⼤⼩/查看表空间物理⽂件的名称及⼤⼩/查看回滚段名称及⼤⼩等等感兴趣的你可以参考下本⽂ SQL1:
复制代码 代码如下:
--1、查看表空间的名称及⼤⼩
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、查看表空间物理⽂件的名称及⼤⼩ SELECT tablespace_name, file_id, file_name,
round(bytes / (1024 * 1024), 0) total_space FROM dba_data_files
ORDER BY tablespace_name; --3、查看回滚段名称及⼤⼩ 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、查看表空间的使⽤情况
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$ts_free c WHERE a.tablespace_name = b.tablespace_name AND a.tablespace_name = c.tablespace_name; --7、查看数据库库对象
SELECT owner, object_type, status, COUNT(*) count# FROM all_objects
GROUP BY owner, object_type, status; --8、查看数据库的版本 SELECT version
FROM product_component_version WHERE substr(product, 1, 6) = 'Oracle'; --9、查看数据库的创建⽇期和归档⽅式
SELECT created, log_mode, log_mode FROM v$database;SQL2:
复制代码 代码如下:
--1G=1024MB --1M=1024KB
--1K=1024Bytes
--1M=11048576Bytes
--1G=1024*11048576Bytes=11313741824Bytes SELECT a.tablespace_name \"表空间名otal \"表空间⼤⼩\free \"表空间剩余⼤⼩\
(total - free) \"表空间使⽤⼤⼩\
total / (1024 * 1024 * 1024) \"表空间⼤⼩(G)\free / (1024 * 1024 * 1024) \"表空间剩余⼤⼩(G)\
(total - free) / (1024 * 1024 * 1024) \"表空间使⽤⼤⼩(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
