Finding tablespace size in oracle if datafiles are autoextensibleor limited

Hi Guys,
it is may be simple but not getting through.. i am using below query to find in db that bytes used and bytes assigned at tablespace leve but not getting correct results.
i have tablesspaces whos size is intially 100mb for example and autoextensible on or limited or unlimited disk space but when i run below query it gives many 32768 values as maxbytes.. anything wrong with below query?? please correct me...
select tablespace_name, round( sum(bytes/(1023*1024) ))used_mb, round(sum( maxbytes/(1024*1024))) assigned_mb , autoextensible from dba_data_files group by tablespace_name,autoextensible
how to display correct values in all the sizes assigned in different scenarios??

Hi,
select
file_id
,tablespace_name
,autoextensible
,(bytes/1024/1024) bytes
,(maxbytes/1024/1024) Max_Bytes
from dba_data_files
where autoextensible='YES'
FILE_ID TABLESPACE_NAME                AUT      BYTES MAX_BYTES
        43 TS_EZESECURE                   YES         17 32767.9844
        42 LARGE_TABB                      YES          1 32767.9844
        41 CAS_TAB                            YES          1 32767.9844
        40 XDB                                   YES         10 32767.9844
        39 USER_SIDEBET_TAB            YES         10 32767.9844
        38 BG_GAME_TABA                 YES         20 32767.9844
        37 BETS_PROMO                     YES         20 32767.9844
        36 BG_TABA                           YES         17 32767.9844
        35 PP_NPC_TABA                    YES         17 32767.9844
        34 BG_USERGAME_TABA           YES         17 32767.9844
        33 CWMLITE                            YES         17 32767.9844You want the table space with autoextensible...
I used only the part of the query of Navneet.. !!
- Pavan Kumar N

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