Updates/Inserts to the Tablespace

Question

We have this centralized database called CONSOLE running in Oracle Database 10.2.0.5. We have site databases (150 small database from different towns). All of these inserts data into the CONSOLE database every 4 hours. I was tasked to monitor the console database. Part of my plan is to make sure that no tablespaces will be full and I need to address this issue before it occurs. The problem is we only have limited storage in the CONSOLE database and the upgrade in storage is scheduled in the 3rd week of June.
Is there a way to find out when was a tablespace (datafile) was last written to? (And from which table this data (row) belongs?)
The concept that I would like to find out is the same in the dba_tables view where you can check when was the table last analyzed.

Answer 1

With this script you can monitor the tablespace size and take action:
==========================================
set linesize 150
column tablespace_name format a20 heading 'Tablespace'
column sumb format 999,999,999
column extents format 9999
column bytes format 999,999,999,999
column largest format 999,999,999,999
column Tot_Size format 999,999 Heading 'Total| Size(Mb)'
column Tot_Free format 999,999,999 heading 'Total Free(MB)'
column Pct_Free format 999.99 heading '% Free'
column Chunks_Free format 9999 heading 'No Of Ext.'
column Max_Free format 999,999,999 heading 'Max Free(Kb)'
set echo off
PROMPT FREE SPACE AVAILABLE IN TABLESPACES
select a.tablespace_name,sum(a.tots/1048576) Tot_Size,
sum(a.sumb/1048576) Tot_Free,
sum(a.sumb)*100/sum(a.tots) Pct_Free,
sum(a.largest/1024) Max_Free,sum(a.chunks) Chunks_Free
from
select tablespace_name,0 tots,sum(bytes) sumb,
max(bytes) largest,count(*) chunks
from dba_free_space a
group by tablespace_name
union
select tablespace_name,sum(bytes) tots,0,0,0 from
dba_data_files
group by tablespace_name) a
group by a.tablespace_name
order by pct_free;
=========
regards
Shanoj