Datafile problem

Question

Hi Gurus,
I have two different environments A and B(diff hardware) where two identical oracle user exists.
My problem is in one environment which is currently live(env A) has the data file size 8G whereas in the other one(env B) I have to resized the data file to 40G. The count of table and there data are same for both these two users.
I have to resize the datafile as when I am running the following query it is giving 0% for the tablespace:
SELECT b.tablespace_name,
c.size_kb,
b.free_kb,
Trunc((b.free_kb/c.size_kb) * 100) percent_free
FROM (SELECT tablespace_name,
Trunc(Sum(bytes)/1024) free_kb
FROM dba_free_space
GROUP BY tablespace_name) b,
(SELECT tablespace_name,
Trunc(Sum(bytes)/1024) size_kb
FROM dba_data_files
GROUP BY tablespace_name) c
WHERE b.tablespace_name = c.tablespace_name
AND Round((b.free_kb/c.size_kb) * 100,2) < 10;
I used to run the above query to check the tablespace dosent get out of space.
Can anyone tell me where is problem I can look into?
//saby

Answer 1

Why are you resizing them manually?
select file_name, autoextensible from dba_data_files;And what do you mean by "The count of table and there data are same for both these two users."
No user should ever do anything in either of these two tablespaces.