如何回收表空间占用空间,释放你的存储空间---实验
2017-08-03 10:16
591 查看
如何回收表空间占用空间,释放你的存储空间
一、创建表空间
SQL> create tablespace sunhua datafile '/u01/app/oracle/oradata/PROD/sunhua01.dbf' size 10M autoextend on next 50M;
SQL> create or replace view dba_tablespace_free as
select a.tablespace_name,a.total_space_mb allocated_space_mb,round(b.free_space_mb,2) free_space_mb,(a.max_space-a.total_space_mb) free_allocate_mb,round(a.max_space,2) max_space_mb,
round((a.total_space_mb-b.free_space_mb)/a.total_space_mb*100,2) pct_usage,round(a.total_space_mb/a.max_space*100,2) pct_allocated
from (select tablespace_name,sum(bytes)/1024/1024 total_space_Mb,decode(sum(maxbytes/1024/1024),0,
sum(bytes)/1024/1024,sum(case when AUTOEXTENSIBLE='YES' then maxbytes
else bytes end)/1024/1024) max_space
from dba_data_files group by tablespace_name)a,(select tablespace_name, sum((bytes)/1024/1024) free_space_Mb
from dba_free_space group by tablespace_name) b where a.tablespace_name=b.tablespace_name;
二、创建一个表使用这个表空间:
SQL>create table sunhua tablespace sunhua as select * from dba_objects;
查看表空间的大小
SQL> select BYTES/1024/1024,MAXBYTES/1024/1024 from Dba_Data_Files where tablespace_name ='SUNHUA';
BYTES/1024/1024 MAXBYTES/1024/1024
--------------- ------------------
60 32767.984375
再次插入信息
SQL> insert into sunhua select * from dba_objects;
86274 rows inserted
SQL> commit;
Commit complete
SQL> select BYTES/1024/1024,MAXBYTES/1024/1024 from Dba_Data_Files where tablespace_name ='SUNHUA';
BYTES/1024/1024 MAXBYTES/1024/1024
--------------- ------------------
60 32767.984375
查看表空间的使用率
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 60 21 35.00% 39 32746.9843 39
查看数据文件的文件号
SQL> select FILE_ID from dba_data_files where tablespace_name='SUNHUA';
FILE_ID
----------
5
收缩表空间
SQL> alter database datafile 5 resize 25M;
Database altered
查看表空间的使用率
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 25 21 84.00% 4 32746.9843 4
创建sunhua_1的表
SQL> create table sunhua_1 tablespace sunhua as select * from dba_objects;
Table created
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 75 31 41.33% 44 32736.9843 44
删除sunhua表
SQL> truncate table sunhua;
Table truncated
查看表空间使用率
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES
4000
,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 75 11.06 14.75% 63.94 32756.9243 44
收缩表空间
SQL> alter database datafile 5 resize 12M;
alter database datafile 5 resize 12M
ORA-03297: 文件包含在请求的 RESIZE 值以外使用的数据
SQL> select segment_name,block_id,blocks from dba_extents where tablespace_name='SUNHUA' order by block_id desc;
SEGMENT_NAME BLOCK_ID BLOCKS
-------------------------------------------------------------------------------- ---------- ----------
SUNHUA_1 3840 128
SUNHUA_1 3712 128
SUNHUA_1 3584 128
SUNHUA_1 3456 128
SUNHUA_1 3328 128
SUNHUA_1 3200 128
SUNHUA_1 3072 128
SUNHUA_1 2944 128
SUNHUA_1 2816 128
SUNHUA_1 2808 8
SUNHUA_1 2800 8
SUNHUA_1 2792 8
SUNHUA_1 2784 8
SUNHUA_1 2776 8
SUNHUA_1 2768 8
SUNHUA_1 2760 8
SUNHUA_1 2752 8
SUNHUA_1 2744 8
SUNHUA_1 2736 8
SUNHUA_1 2728 8
SEGMENT_NAME BLOCK_ID BLOCKS
-------------------------------------------------------------------------------- ---------- ----------
SUNHUA_1 2720 8
SUNHUA_1 2712 8
SUNHUA_1 2704 8
SUNHUA_1 2696 8
SUNHUA_1 2688 8
SUNHUA 128 8
26 rows selected
SQL> select segment_name,blocks from dba_segments where segment_name='SUNHUA_1';
SEGMENT_NAME BLOCKS
-------------------------------------------------------------------------------- ----------
SUNHUA_1 1280
迁移表
SQL> alter table SUNHUA_1 move tablespace users;
Table altered
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 75 1.06 1.41% 73.94 32766.9243 73.94
SQL> alter database datafile 5 resize 2M;
Database altered
SQL>
一、创建表空间
SQL> create tablespace sunhua datafile '/u01/app/oracle/oradata/PROD/sunhua01.dbf' size 10M autoextend on next 50M;
SQL> create or replace view dba_tablespace_free as
select a.tablespace_name,a.total_space_mb allocated_space_mb,round(b.free_space_mb,2) free_space_mb,(a.max_space-a.total_space_mb) free_allocate_mb,round(a.max_space,2) max_space_mb,
round((a.total_space_mb-b.free_space_mb)/a.total_space_mb*100,2) pct_usage,round(a.total_space_mb/a.max_space*100,2) pct_allocated
from (select tablespace_name,sum(bytes)/1024/1024 total_space_Mb,decode(sum(maxbytes/1024/1024),0,
sum(bytes)/1024/1024,sum(case when AUTOEXTENSIBLE='YES' then maxbytes
else bytes end)/1024/1024) max_space
from dba_data_files group by tablespace_name)a,(select tablespace_name, sum((bytes)/1024/1024) free_space_Mb
from dba_free_space group by tablespace_name) b where a.tablespace_name=b.tablespace_name;
二、创建一个表使用这个表空间:
SQL>create table sunhua tablespace sunhua as select * from dba_objects;
查看表空间的大小
SQL> select BYTES/1024/1024,MAXBYTES/1024/1024 from Dba_Data_Files where tablespace_name ='SUNHUA';
BYTES/1024/1024 MAXBYTES/1024/1024
--------------- ------------------
60 32767.984375
再次插入信息
SQL> insert into sunhua select * from dba_objects;
86274 rows inserted
SQL> commit;
Commit complete
SQL> select BYTES/1024/1024,MAXBYTES/1024/1024 from Dba_Data_Files where tablespace_name ='SUNHUA';
BYTES/1024/1024 MAXBYTES/1024/1024
--------------- ------------------
60 32767.984375
查看表空间的使用率
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 60 21 35.00% 39 32746.9843 39
查看数据文件的文件号
SQL> select FILE_ID from dba_data_files where tablespace_name='SUNHUA';
FILE_ID
----------
5
收缩表空间
SQL> alter database datafile 5 resize 25M;
Database altered
查看表空间的使用率
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 25 21 84.00% 4 32746.9843 4
创建sunhua_1的表
SQL> create table sunhua_1 tablespace sunhua as select * from dba_objects;
Table created
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 75 31 41.33% 44 32736.9843 44
删除sunhua表
SQL> truncate table sunhua;
Table truncated
查看表空间使用率
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES
4000
,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 75 11.06 14.75% 63.94 32756.9243 44
收缩表空间
SQL> alter database datafile 5 resize 12M;
alter database datafile 5 resize 12M
ORA-03297: 文件包含在请求的 RESIZE 值以外使用的数据
SQL> select segment_name,block_id,blocks from dba_extents where tablespace_name='SUNHUA' order by block_id desc;
SEGMENT_NAME BLOCK_ID BLOCKS
-------------------------------------------------------------------------------- ---------- ----------
SUNHUA_1 3840 128
SUNHUA_1 3712 128
SUNHUA_1 3584 128
SUNHUA_1 3456 128
SUNHUA_1 3328 128
SUNHUA_1 3200 128
SUNHUA_1 3072 128
SUNHUA_1 2944 128
SUNHUA_1 2816 128
SUNHUA_1 2808 8
SUNHUA_1 2800 8
SUNHUA_1 2792 8
SUNHUA_1 2784 8
SUNHUA_1 2776 8
SUNHUA_1 2768 8
SUNHUA_1 2760 8
SUNHUA_1 2752 8
SUNHUA_1 2744 8
SUNHUA_1 2736 8
SUNHUA_1 2728 8
SEGMENT_NAME BLOCK_ID BLOCKS
-------------------------------------------------------------------------------- ---------- ----------
SUNHUA_1 2720 8
SUNHUA_1 2712 8
SUNHUA_1 2704 8
SUNHUA_1 2696 8
SUNHUA_1 2688 8
SUNHUA 128 8
26 rows selected
SQL> select segment_name,blocks from dba_segments where segment_name='SUNHUA_1';
SEGMENT_NAME BLOCKS
-------------------------------------------------------------------------------- ----------
SUNHUA_1 1280
迁移表
SQL> alter table SUNHUA_1 move tablespace users;
Table altered
SQL>
SQL> SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
2 D.TOT_GROOTTE_MB "表空间大小(M)",
3 D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
4 TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
5 F.TOTAL_BYTES "当前空闲空间(M)",
6 (SELECT free_space_mb+free_allocate_mb FROM dba_tablespace_free a where a.tablespace_name= f.tablespace_name) "总剩余空间",
7 F.MAX_BYTES "最大块(M)"
8 FROM (SELECT TABLESPACE_NAME,
9 ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
10 ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
11 FROM SYS.DBA_FREE_SPACE
12 GROUP BY TABLESPACE_NAME) F,
13 (SELECT DD.TABLESPACE_NAME,
14 ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
15 FROM SYS.DBA_DATA_FILES DD
16 GROUP BY DD.TABLESPACE_NAME) D
17 WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
18 and f.tablespace_name='SUNHUA'
19 ORDER BY 3 desc;
表空间名 表空间大小(M) 已使用空间(M) 使用比 当前空闲空间(M) 总剩余空间 最大块(M)
------------------------------ ---------- ---------- -------- ---------- ---------- ----------
SUNHUA 75 1.06 1.41% 73.94 32766.9243 73.94
SQL> alter database datafile 5 resize 2M;
Database altered
SQL>
相关文章推荐
- 如何Shrink Undo表空间,释放过度占用的空间
- 如何Shrink Undo表空间, 释放过度占用的空间
- 如何Shrink Undo表空间,释放过度占用的空间
- 如何Shrink Undo表空间、释放过度占用的空间
- 如何释放SP文件在C盘占用的空间
- DB2删除完数据之后,如何释放LOB字段占用的空间
- 如何释放SP文件在C盘占用的空间
- 如何分配和释放存储空间
- 如何回收Xenserver 删除虚拟机快照后释放的空间
- [转]Oracle HowTo:如何Shrink Undo表空间,释放过度占用的空间
- 如何Shrink Undo表空间,释放过度占用的空间
- 如何Shrink Undo表空间,释放过度占用的空间
- 如何清理Xcode,释放Mac的存储空间
- [未成功]VMware vSphere 5.5 存储空间回收实验
- Harbor私有仓库中如何彻底删除镜像释放存储空间?
- 如何Shrink Undo表空间,释放过度占用的空间
- Oracle HowTo:如何Shrink Undo表空间,释放过度占用的空间
- 如何Shrink Undo表空间,释放过度占用的空间
- 如何回收Xenserver 删除虚拟机快照后释放的空间
- 实验四 主存空间的分配和回收模拟