Problem while resizing datafiles..

Question

Hi Experts,
Im facing problems while resizing my datafiles. I am using Oracle 10g on Windows 2003 server.
I had a datafile of size 20GB.
I have 3 schemas sch1, sch2,sch3 and all have objects.
I dropped sch1 and truncated some tables in sch2.
I found the freespace available in my datafile 16GB.
When I try to resize the datafile to 5GB, I am getting ora-03297 error.
I checked for object that are beyond 5GB using the follwing query.
I found sch3 objects are present beyond 5GB mark on that datafile.
How can I resize the datafile to 5GB??
Is there any other way to resize the datafile?? Please help me.
SELECT owner, segment_name, segment_type, tablespace_name, file_id,
((block_id+1)*(SELECT value FROM v$parameter
WHERE UPPER(name)='DB_BLOCK_SIZE')+BYTES) end_of_extent_is_at_this_byte
FROM dba_extents
WHERE ((block_id+1)*(SELECT value FROM v$parameter
WHERE UPPER(name)='DB_BLOCK_SIZE')+BYTES) > (<needed size in MB>*1024*
1024)
AND tablespace_name='<tablespace_name>'
ORDER BY file_id, end_of_extent_is_at_this_byte;
Thanks in advance.

Answer 1

take a look at the metalink docs...probably coz of high water marks u r not able to do that..
Note 130866.1 - How to Resolve ORA-03297 When Resizing a Datafile by Finding the Table Highwatermark     
Note 237654.1 - Resizing a Datafile Returns Error ORA-03297