Average daily database growth

Question

Hi All,
How can I find the average daily growth of a database for the last one year?
Database version:11.2.0.2
OS:HP-UX

Answer 1

We generally use this query in our environment - Try this
select tsname as "Tablespace", 
       tsize as "Curr Size(Mb)",
       tused as "Used (Mb)",
       tfree as "Free (Mb)",
       TMax as "Max Size (Mb)",
       val1 as "Delta 1hr",
       val2 as "Delta 1dy",
       val3 as "Delta 1wk",
       val4 as "Delta 1mnt",
       round((tused / tMax)*100,2) as "%Used of Max",
       round(((tused+val3) / tMax)*100,2) as "%UsedMax_+1wk",
       round(((tused+val4) / tMax)*100,2) as "%UsedMax_+1mnt",       
case when ( (   (tused+val3)/tMax)*100 < 80) then 'NORMAL'
     when ( (   (tused+val3)/tMax)*100 between 80 and 90) then 'WARNING'
else 'CRITICAL' end "Status +1Wk",
case when ( (   (tused+val4)/tMax)*100 < 80) then 'NORMAL'
     when ( (   (tused+val4)/tMax)*100 between 80 and 90) then 'WARNING'
else 'CRITICAL' end "Status +1Mnth"    
from
select tsname,
round(tablespace_size*t2.block_size/ 1024/1024,2) TSize,
round(tablespace_usedsize*t2.block_size/1024/1024,2) TUsed,
round((tablespace_size-tablespace_usedsize)*t2.block_size/1024/1024,2) TFree,
(select sum(decode(b.autoextensible,'YES',b.maxbytes, b.bytes))/1024/1024
  from dba_data_files b
  where b.tablespace_name = t2.tablespace_name
  group by b.tablespace_name) TMax,
round(val1*t2.block_size/1024/1024,2) val1,
round(val2*t2.block_size/1024/1024,2) val2,
round(val3*t2.block_size/1024/1024,2) val3,
round(val4*t2.block_size/1024/1024,2) val4
from
(select distinct tsname,
t1.snap_id,
rtime,
tablespace_size,
tablespace_usedsize,
tablespace_usedsize-first_value(tablespace_usedsize) 
over (partition by tablespace_id order by t1.snap_id rows 1 preceding) val1,
tablespace_usedsize-first_value(tablespace_usedsize) 
over (partition by tablespace_id order by t1.snap_id rows 24 preceding) val2,
tablespace_usedsize-first_value(tablespace_usedsize) 
over (partition by tablespace_id order by t1.snap_id rows 168 preceding) val3,
tablespace_usedsize-first_value(tablespace_usedsize) 
over (partition by tablespace_id order by t1.snap_id rows 720 preceding) val4
from (select t1.tablespace_size, t1.snap_id, t1.rtime,t1.tablespace_id, 
             t1.tablespace_usedsize-nvl(t3.space,0) tablespace_usedsize
     from dba_hist_tbspc_space_usage t1,
          dba_hist_tablespace_stat t2,
          (select ts_name,sum(space) space 
           from recyclebin group by ts_name) t3
     where t1.tablespace_id = t2.ts#
      and  t1.snap_id = t2.snap_id
      and  t2.tsname = t3.ts_name (+)) t1,
dba_hist_tablespace_stat t2
where t1.tablespace_id = t2.ts#
and t1.snap_id = t2.snap_id) t1,
dba_tablespaces t2
where t1.tsname = t2.tablespace_name
and t1.snap_id = (select max(snap_id) from dba_hist_snapshot)
and t2.contents = 'PERMANENT');