Oracle教程之管理表空间（十二）--监控表空间
1、查看表空间空闲大小
09:47:04 SQL> select TABLESPACE_NAME,sum(bytes)/1024/1024 from dba_free_space
09:47:33 2 group by tablespace_name;
TABLESPACE_NAME SUM(BYTES)/1024/1024
------------------------------ --------------------
SYSAUX 51.0625
LX01 9
UNDO_TBS01 8.6875
LX02 9.9921875
RTBS 18.6875
USERS 16
OLTP 46
TEST 59.875
SYSTEM 131.890625
EXAMPLE 399
INDX 39.9375
2、表空间数据文件的监控：
13:46:54 SQL> DESC v$filestat
Name Null? Type
----------------------------------------------------------------------------------- -------- -----------------------
FILE# NUMBER
PHYRDS NUMBER
PHYWRTS NUMBER
PHYBLKRD NUMBER
PHYBLKWRT NUMBER
SINGLEBLKRDS NUMBER
READTIM NUMBER
WRITETIM NUMBER
SINGLEBLKRDTIM NUMBER
AVGIOTIM NUMBER
LSTIOTIM NUMBER
MINIOTIM NUMBER
MAXIORTM NUMBER
MAXIOWTM NUMBER
13:52:15 SQL> select file#,phyrds,phywrts,phyblkrd,phyblkwrt from v$filestat;
FILE# PHYRDS PHYWRTS PHYBLKRD PHYBLKWRT
---------- ---------- ---------- ---------- ----------
1 5301 294 6272 411
2 410 518 410 929
3 1113 1000 2481 1378
4 24 10 36 27
5 6 1 6 1
6 6 1 6 1
7 4 1 4 1
7 rows selected.
3、查看表空间使用率
select a.tablespace_name,
round(a.total_size) "total_size(mb)",
round(a.total_size) - round(b.free_size,3) "unsed_size(mb)",
round(b.free_size,3) "free_size(mb)",
round(b.free_size/total_size *100,2) ||'%' free_rate
from
(select tablespace_name,sum(bytes) /1024/1024 total_size
from dba_data_files
group by tablespace_name) a,
(select tablespace_name,sum(bytes)/1024/1024 free_size
from dba_free_space
group by tablespace_name) b
where a.tablespace_name=b.tablespace_name(+);
05:08:02 SQL> select a.tablespace_name,
round(a.total_size) "total_size(mb)",
round(a.total_size) - round(b.free_size,3) "unsed_size(mb)",
(select tablespace_name,sum(bytes) /1024/1024 total_size
round(b.free_size,3) "free_size(mb)",
round(b.free_size/total_size *100,2) ||'%' free_rate
from
(select tablespace_name,sum(bytes) /1024/1024 total_size
from dba_data_files
group by tablespace_name) a,
(select tablespace_name,sum(bytes)/1024/1024 free_size
from dba_free_space
group by tablespace_name) b
05:08:03 13 where a.tablespace_name=b.tablespace_name(+);
TABLESPACE_NAME total_size(mb) unsed_size(mb) free_size(mb) FREE_RATE
------------------------------ -------------- -------------- ------------- -----------------------------------------
UNDOTBS1 90 19 71 78.89%
SYSAUX 290 286.125 3.875 1.34%
USERS01 20 1.625 18.375 91.88%
USERS 11 3.812 7.188 63.89%
UNDOTBS 20 11.5 8.5 42.5%
SYSTEM 490 485.625 4.375 .89%
EXAMPLE 100 68.25 31.75 31.75%
BIG_TBS 10 .125 9.875 98.75%
USERS03 10 .125 9.875 98.75%
UNDOTBS02 10 9.562 .438 4.38%
USERS02 10 .25 9.75 97.5%
TBS_16K01 10 .062 9.938 99.38%
USERS04 10 .125 9.875 98.75%
13 rows selected.
05:08:36 SQL> alter tablespace system
05:09:05 2 add datafile '/u01/app/oracle/oradata/orcl/system02.dbf' size 200m;
Tablespace altered.
05:09:59 SQL> select a.tablespace_name,
round(a.total_size) "total_size(mb)",
round(a.total_size) - round(b.free_size,3) "unsed_size(mb)",
round(b.free_size,3) "free_size(mb)",
(select tablespace_name,sum(bytes) /1024/1024 total_size
round(b.free_size/total_size *100,2) ||'%' free_rate
from
(select tablespace_name,sum(bytes) /1024/1024 total_size
from dba_data_files
group by tablespace_name) a,
(select tablespace_name,sum(bytes)/1024/1024 free_size
from dba_free_space
group by tablespace_name) b
05:10:03 13 where a.tablespace_name=b.tablespace_name(+);
TABLESPACE_NAME total_size(mb) unsed_size(mb) free_size(mb) FREE_RATE
------------------------------ -------------- -------------- ------------- -----------------------------------------
UNDOTBS1 90 19 71 78.89%
SYSAUX 290 286.125 3.875 1.34%
USERS01 20 1.625 18.375 91.88%
USERS 11 3.812 7.188 63.89%
UNDOTBS 20 11.5 8.5 42.5%
SYSTEM 690 485.687 204.313 29.61%
EXAMPLE 100 68.25 31.75 31.75%
BIG_TBS 10 .125 9.875 98.75%
USERS03 10 .125 9.875 98.75%
UNDOTBS02 10 9.562 .438 4.38%
USERS02 10 .25 9.75 97.5%
TBS_16K01 10 .062 9.938 99.38%
USERS04 10 .125 9.875 98.75%
13 rows selected.
05:34:09 SQL> alter database
05:34:27 2 datafile '/u01/app/oracle/oradata/orcl/system02.dbf' resize 300m;
Database altered.
01:48:50 SQL> alter database
01:48:52 2 datafile '/ora_data/oradata/prod/system01.dbf'
01:49:09 3 autoextend on next 10m maxsize 1000m;
Database altered.
05:34:33 SQL> select a.tablespace_name,
round(a.total_size) "total_size(mb)",
round(a.total_size) - round(b.free_size,3) "unsed_size(mb)",
round(b.free_size,3) "free_size(mb)",
round(b.free_size/total_size *100,2) ||'%' free_rate
from
(select tablespace_name,sum(bytes) /1024/1024 total_size
from dba_data_files
group by tablespace_name) a,
(select tablespace_name,sum(bytes)/1024/1024 free_size
from dba_free_space
group by tablespace_name) b
05:34:46 13 where a.tablespace_name=b.tablespace_name(+);
TABLESPACE_NAME total_size(mb) unsed_size(mb) free_size(mb) FREE_RATE
------------------------------ -------------- -------------- ------------- -----------------------------------------
UNDOTBS1 90 19 71 78.89%
SYSAUX 290 286.125 3.875 1.34%
USERS01 20 1.625 18.375 91.88%
USERS 11 3.812 7.188 63.89%
UNDOTBS 20 11.5 8.5 42.5%
SYSTEM 790 485.687 304.313 38.52%
EXAMPLE 100 68.25 31.75 31.75%
BIG_TBS 10 .125 9.875 98.75%
USERS03 10 .125 9.875 98.75%
UNDOTBS02 10 9.562 .438 4.38%
USERS02 10 .25 9.75 97.5%
TBS_16K01 10 .062 9.938 99.38%
USERS04 10 .125 9.875 98.75%
13 rows selected.
CUUG
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