-----最近七天數據庫的增長情況，這個只是一個估算值。
select sum(space_used_total)/1024/1024/1024 "last 7 days db increase - G"
from
dba_hist_seg_stat s,
dba_hist_seg_stat_obj o,
dba_hist_snapshot sn
where
s.obj# = o.obj#
and
sn.snap_id = s.snap_id
and begin_interval_time > sysdate-8
order by
begin_interval_time
/
以下再補充兩個類似的腳本腳本來之網上：
scripts:查看數據庫歷史增長情況
查看數據庫歷史增長情況
此處是通過計算數據庫所有表空間的歷史增長情況來計算數據庫歷史情況。
--不含undo和temp
with tmp as
(select rtime,
sum(tablespace_usedsize_kb) tablespace_usedsize_kb,
sum(tablespace_size_kb) tablespace_size_kb
from (select rtime,
e.tablespace_id,
(e.tablespace_usedsize) * (f.block_size) / 1024 tablespace_usedsize_kb,
(e.tablespace_size) * (f.block_size) / 1024 tablespace_size_kb
from dba_hist_tbspc_space_usage e,
dba_tablespaces f,
v$tablespace g
where e.tablespace_id = g.TS#
and f.tablespace_name = g.NAME
and f.contents not in ('TEMPORARY','UNDO'))
group by rtime)
select tmp.rtime,
tablespace_usedsize_kb,
tablespace_size_kb,
(tablespace_usedsize_kb -
LAG(tablespace_usedsize_kb, 1, NULL) OVER(ORDER BY tmp.rtime)) AS DIFF_KB
from tmp,
(select max(rtime) rtime
from tmp
group by substr(rtime, 1, 10)) t2
where t2.rtime = tmp.rtime;
--含undo和temp
with tmp as
(select min(rtime) rtime,
sum(tablespace_usedsize_kb) tablespace_usedsize_kb,
sum(tablespace_size_kb) tablespace_size_kb
from (select rtime,
e.tablespace_id,
(e.tablespace_usedsize) * (f.block_size) / 1024 tablespace_usedsize_kb,
(e.tablespace_size) * (f.block_size) / 1024 tablespace_size_kb
from dba_hist_tbspc_space_usage e,
dba_tablespaces f,
v$tablespace g
where e.tablespace_id = g.TS#
and f.tablespace_name = g.NAME)
group by rtime)
select tmp.rtime,
tablespace_usedsize_kb,
tablespace_size_kb,
(tablespace_usedsize_kb -
LAG(tablespace_usedsize_kb, 1, NULL) OVER(ORDER BY tmp.rtime)) AS DIFF_KB
from tmp,
(select min(rtime) rtime
from tmp
group by substr(rtime, 1, 10)) t2 where t2.rtime = tmp.rtime
##############################################################
SQL腳本:列出相關段對象在 快照時間內的使用空間的歷史變化信息：
column owner format a16
column object_name format a36
column start_day format a11
column block_increase format 9999999999
select obj.owner, obj.object_name,
to_char(sn.BEGIN_INTERVAL_TIME,'RRRR-MON-DD') start_day,
sum(a.db_block_changes_delta) block_increase
from dba_hist_seg_stat a,
dba_hist_snapshot sn,
dba_objects obj
where sn.snap_id = a.snap_id
and obj.object_id = a.obj#
and obj.owner not in ('SYS','SYSTEM')
and end_interval_time between to_timestamp('17-FEB-2014','DD-MON-RRRR')
and to_timestamp('25-FEB-2014','DD-MON-RRRR')
group by obj.owner, obj.object_name,
to_char(sn.BEGIN_INTERVAL_TIME,'RRRR-MON-DD')
order by obj.owner, obj.object_name ;
