Oracle 查看表空间的大小及使用情况sql语句

时间:2022-01-11 来源:未知网络 作者:996建站网

SQL 1:

-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;

SQL 2

–1G=1024MB

–1M=1024KB

–1K=1024Bytes

–1M=11048576Bytes

–1G=1024*11048576Bytes=11313741824Bytes

SELECT a.tablespace_name "表空间名",

total "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

Oracle 查看表空间的大小及使用情况sql语句插图

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