对于数据库中表空间查看，想必大家都有很多的脚本已经在用了，自己也啰嗦一下，分享一个通过shell脚本查看表空间使用情况的例子。

脚本如下：

sqlplus -s $DB_CONN_STR@$SH_DB_SID  <

set echo off heading on underline on;

column inst_num  heading "Inst Num"  new_value inst_num  format 99999;

column inst_name heading "Instance"  new_value inst_name format a12;

column db_name  heading "DB Name"  new_value db_name  format a12;

column dbid      heading "DB Id"    new_value dbid      format 9999999999 just c;

prompt

prompt Current Instance

prompt ~~~~~~~~~~~~~~~~

select d.dbid            dbid

, d.name            db_name

, i.instance_number inst_num

, i.instance_name  inst_name

from v\$database d,

v\$instance i;

set term on feedback off lines 130 pagesize 999 tab off trims on

column MB format 999,999,999  heading "Total MB"

column free format 9,999,999 heading "Free MB"

column used format 99,999,999 heading "Used MB"

column Largest format 999,999 heading "LrgstMB"

column tablespace_name format a20 heading "Tablespace"

column status format a3 truncated

column max_extents format 99999999999 heading "MaxExt"

col extent_management          for a1 trunc  head "M"

col allocation_type            for a1 trunc  head "A"

col Ext_Size for a4 trunc head "Init"

column pfree format a3 trunc heading "%Fr"

break on report

compute sum of MB on report

compute sum of free on report

compute sum of used on report

select

d.tablespace_name,

decode(d.status,

'ONLINE', 'OLN',

'READ ONLY', 'R/O',

d.status) status,

d.extent_management,

decode(d.allocation_type,

'USER','',

d.allocation_type) allocation_type,

(case

when initial_extent < 1048576

then lpad(round(initial_extent/1024,0),3)||'K'

else lpad(round(initial_extent/1024/1024,0),3)||'M'

end) Ext_Size,

NVL (a.bytes / 1024 / 1024, 0) MB,

NVL (f.bytes / 1024 / 1024, 0) free,

(NVL (a.bytes / 1024 / 1024, 0) - NVL (f.bytes / 1024 / 1024, 0)) used,

NVL (l.large / 1024 / 1024, 0) largest,

d.MAX_EXTENTS ,

lpad(round((f.bytes/a.bytes)*100,0),3) pfree,

(case when round(f.bytes/a.bytes*100,0) >= 20 then ' ' else '*' end) alrt

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,

(SELECT  tablespace_name, MAX(bytes) large

FROM dba_free_space

GROUP BY tablespace_name) l

WHERE d.tablespace_name = a.tablespace_name(+)

AND d.tablespace_name = f.tablespace_name(+)

AND d.tablespace_name = l.tablespace_name(+)

AND NOT (d.extent_management LIKE 'LOCAL' AND d.contents LIKE 'TEMPORARY')

UNION ALL

select

d.tablespace_name,

decode(d.status,

'ONLINE', 'OLN',

'READ ONLY', 'R/O',

d.status) status,

d.extent_management,

decode(d.allocation_type,

'UNIFORM','U',

'SYSTEM','A',

'USER','',

d.allocation_type) allocation_type,

(case

when initial_extent < 1048576

then lpad(round(initial_extent/1024,0),3)||'K'

else lpad(round(initial_extent/1024/1024,0),3)||'M'

end) Ext_Size,

NVL (a.bytes / 1024 / 1024, 0) MB,

(NVL (a.bytes / 1024 / 1024, 0) - NVL (t.bytes / 1024 / 1024, 0)) free,

NVL (t.bytes / 1024 / 1024, 0) used,

NVL (l.large / 1024 / 1024, 0) largest,

d.MAX_EXTENTS ,

lpad(round(nvl(((a.bytes-t.bytes)/NVL(a.bytes,0))*100,100),0),3) pfree,

(case when nvl(round(((a.bytes-t.bytes)/NVL(a.bytes,0))*100,0),100) >= 20 then ' ' else '*' end) alrt

FROM sys.dba_tablespaces d,

(SELECT  tablespace_name, SUM(bytes) bytes

FROM dba_temp_files

GROUP BY tablespace_name order by tablespace_name) a,

(SELECT  tablespace_name, SUM(bytes_used  ) bytes

FROM v\$temp_extent_pool

GROUP BY tablespace_name) t,

(SELECT  tablespace_name, MAX(bytes_cached) large

FROM v\$temp_extent_pool

GROUP BY tablespace_name order by tablespace_name) l

WHERE d.tablespace_name = a.tablespace_name(+)

AND d.tablespace_name = t.tablespace_name(+)

AND d.tablespace_name = l.tablespace_name(+)

AND d.extent_management LIKE 'LOCAL'

AND d.contents LIKE 'TEMPORARY'

ORDER by 1

/

prompt

exit

EOF

运行结果相对比较简单，也很清晰。