oracle查看表空间的大小及使用情况sql语句

--------------------------tablespace------------------------------------------------

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路径的名称及大小
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、//查看表空间总数求和，已经使用的表空间
select total.tablespace_name,round(total.MB,2) as Total_MB,
round(total.MB-free.MB, 2) as Used_MB
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

8、//查看数据库库对象
SELECT owner, object_type, status, COUNT(*) count#
FROM all_objects
GROUP BY owner, object_type, status;
9、//查看数据库的版本　
SELECT version
FROM product_component_version
WHERE substr(product, 1, 6) = 'Oracle';
10、//查看数据库的创建日期和归档方式
SELECT created, log_mode, log_mode FROM v$database;

11、//查表空间使用率情况（含临时表空间）
SELECT d.tablespace_name "Name", d.status "Status",
       TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.90') "Size (M)",
          TO_CHAR (NVL (a.BYTES - NVL (f.BYTES, 0), 0) / 1024 / 1024,
                   '99999999.99'
                  ) USE,
       TO_CHAR (NVL ((a.BYTES - NVL (f.BYTES, 0)) / a.BYTES * 100, 0),
                '990.00'
               ) "Used %"
  FROM SYS.dba_tablespaces d,
       (SELECT   tablespace_name, SUM (BYTES) BYTES
            FROM dba_data_files
        GROUP BY tablespace_name) a,
       (SELECT   tablespace_name, SUM (BYTES) BYTES
            FROM dba_free_space
        GROUP BY tablespace_name) f
 WHERE d.tablespace_name = a.tablespace_name(+)
   AND d.tablespace_name = f.tablespace_name(+)
   AND NOT (d.extent_management LIKE 'LOCAL' AND d.CONTENTS LIKE 'TEMPORARY')
UNION ALL
SELECT d.tablespace_name "Name", d.status "Status",
       TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.90') "Size (M)",
          TO_CHAR (NVL (t.BYTES, 0) / 1024 / 1024, '99999999.99') USE,
       TO_CHAR (NVL (t.BYTES / a.BYTES * 100, 0), '990.00') "Used %"
  FROM SYS.dba_tablespaces d,
       (SELECT   tablespace_name, SUM (BYTES) BYTES
            FROM dba_temp_files
        GROUP BY tablespace_name) a,
       (SELECT   tablespace_name, SUM (bytes_cached) BYTES
            FROM v$temp_extent_pool
        GROUP BY tablespace_name) t
 WHERE d.tablespace_name = a.tablespace_name(+)
   AND d.tablespace_name = t.tablespace_name(+)
   AND d.extent_management LIKE 'LOCAL'
   AND d.CONTENTS LIKE 'TEMPORARY';

　　

　　

--------------------------tablespace使用大小计算-------------------------------

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

　　

-----------------------------扩增表空间大小---------------------------------------------------------

//查询用户对应的表空间，我们可以看到针对不同的数据库用户ORACLE
select username, default_tablespace, temporary_tablespace
from dba_users;

//查询用户的对应的数据文件，以及数据文件大小
select tablespace_name, file_id, file_name,
round(bytes/(1024*1024),0) total_space
from dba_data_files
order by tablespace_name;

//扩增表空间大小
SQL> ALTER DATABASE DATAFILE '/data/URSP_SLSADMIN.dbf' RESIZE 8000M ;