Oracle查詢表空間的每日增長量

#############################歷史資料庫增量，適用各版本oracle**********===

select day,total_gb,used_gb,total_gb-used_gb free_gb,round(100*used_gb/total_gb,2) used_percent,case when(used_gb=used_gb-lag(used_gb,1,0)over(order by day)) then null else used_gb-lag(used_gb,1,0)over(order by day) end incr_gb

from 
(select to_char(snap.end_interval_time, 'yyyy-mm-dd hh24:mi:ss.ff') day,
round(sum(tsu.tablespace_size * dt.block_size) / (1024 * 1024 * 1024),2) total_gb,
round(sum(tsu.tablespace_usedsize * dt.block_size) / (1024 * 1024 * 1024),2) used_gb
from dba_hist_tbspc_space_usage tsu,
dba_hist_snapshot snap,
v$tablespace vt,
dba_tablespaces dt
where tsu.snap_id = snap.snap_id
and tsu.dbid = snap.dbid
and snap.instance_number = 1
and tsu.tablespace_id = vt.ts#
and vt.name = dt.tablespace_name 
and substr(to_char(end_interval_time, 'yyyy-mm-dd hh24:mi:ss.ff'),12,5)='00:00'
group by snap.end_interval_time
order by snap.end_interval_time desc) a 
order by day desc;

===改造不包含某些表空間的增量參考*****====

select day,total_gb,used_gb,total_gb-used_gb free_gb,round(100*used_gb/total_gb,2) used_percent,case when(used_gb=used_gb-lag(used_gb,1,0)over(order by day)) then null else used_gb-lag(used_gb,1,0)over(order by day) end incr_gb

from 
(select to_char(snap.end_interval_time, 'yyyy-mm-dd hh24:mi:ss.ff') day,
round(sum(tsu.tablespace_size * dt.block_size) / (1024 * 1024 * 1024),2) total_gb,
round(sum(tsu.tablespace_usedsize * dt.block_size) / (1024 * 1024 * 1024),2) used_gb
from dba_hist_tbspc_space_usage tsu,
dba_hist_snapshot snap,
v$tablespace vt,
dba_tablespaces dt
where tsu.snap_id = snap.snap_id
and tsu.dbid = snap.dbid
and snap.instance_number = 1
and tsu.tablespace_id = vt.ts#
and vt.name = dt.tablespace_name
-- and dt.tablespace_name='users' --包含特定表空間
and dt.tablespace_name not in ('system','sysaux')--不包括系統表空間和輔助表空間
and dt.contents not in ('temporary','undo') --不包括臨時表空間和undo表空間
and substr(to_char(end_interval_time, 'yyyy-mm-dd hh24:mi:ss.ff'),12,5)='00:00'
group by snap.end_interval_time
order by snap.end_interval_time desc) a 
order by day desc;

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