Tablespace growth within a week :
select b.tsname tablespace_name , MAX(b.used_size_mb) cur_used_size_mb , round(AVG(inc_used_size_mb),2)avg_increas_mb from ( SELECT a.days,a.tsname , used_size_mb , used_size_mb - LAG (used_size_mb,1) OVER ( PARTITION BY a.tsname ORDER BY a.tsname,a.days) inc_used_size_mb
from ( SELECT TO_CHAR(sp.begin_interval_time,'MM-DD-YYYY') days ,ts.tsname ,MAX(round((tsu.tablespace_usedsize* dt.block_size )/(1024*1024),2)) used_size_mb
from dba_hist_tbspc_space_usage tsu , dba_hist_tablespace_stat ts ,dba_hist_snapshot sp, dba_tablespaces dt where tsu.tablespace_id= ts.ts# AND tsu.snap_id = sp.snap_id
AND ts.tsname = dt.tablespace_name AND sp.begin_interval_time > sysdate-7
GROUP BY TO_CHAR(sp.begin_interval_time,'MM-DD-YYYY'), ts.tsname
ORDER BY ts.tsname, days ) a
) b GROUP BY b.tsname ORDER BY b.tsname;
declare
--Cursor Declaretion
CURSOR c1
IS
select sum(round((tablespace_usedsize*8*1024)/1024/1024,2)) as "used space",snap_id from DBA_HIST_TBSPC_SPACE_USAGE
where snap_id in
(select snap_id
from dba_hist_snapshot
where to_char(BEGIN_INTERVAL_TIME) between '16/10/2011%18%' and '20/10/2011%18')
group by snap_id order by snap_id asc;
--Variable Declaretion
row_counter number;
db_used_size_1 number;
db_used_size_2 number;
snap_time timestamp;
total_change number;
begin
row_counter:=0;
total_change:=0;
db_used_size_2:=0;
db_used_size_1:=0;
FOR emp_rec IN c1
LOOP
row_counter:=row_counter+1;
if mod(row_counter,2)=0
then
db_used_size_2:=emp_rec."used space";
else
db_used_size_1:=emp_rec."used space";
end if;
if row_counter != 1
then
execute immediate 'select begin_interval_time from dba_hist_snapshot where snap_id ='||emp_rec.snap_id into snap_time;
if db_used_size_2-db_used_size_1 !=0 and db_used_size_1 !=0 and db_used_size_2!=0
then
if mod(row_counter,2)!=0
then
dbms_output.put_line(substr(to_char(snap_time),1,instr(snap_time,',')-1)||' -> '
||to_char(db_used_size_1-db_used_size_2)||'MB'||'--> %'||to_char(round(100*(db_used_size_1-db_used_size_2)/db_used_size_1,2)));
total_change:=total_change+(db_used_size_1-db_used_size_2);
else
dbms_output.put_line(substr(to_char(snap_time),1,instr(snap_time,',')-1)||' -> '||to_char(db_used_size_2-
db_used_size_1)||'MB'|| '--> %'||to_char(round(100*(db_used_size_2-db_used_size_1)/db_used_size_1,2)));
total_change:=total_change+(db_used_size_2-db_used_size_1);
end if;
end if;
end if;
END LOOP;
dbms_output.put_line('Total Change ' || to_char(total_change ||' MB' ));
end;
