Viewing actual data in a .dbf file

Question

I'm completely new at Oracle, and so I'm not sure if I know exactly how to explain my situation, but, here it is. I am trying to import a .dmp file into Oracle. I have run the imp command and have the resultant .dbf datafile, and I have added it into a tablespace, but I have absolutely no idea how to view the actual data that is contained within the .dbf datafile. I've googled everything I can think of, but no cigar... please help! Thanks for your time!
Tyler

Answer 1

I use the following two sqls to determine the contents of a datafile. The first query will ask for the tablespace name, and the second for the file_id. The file_id can be gotten from dba_data_files (select file_id,file_name from dba_data_files;)
column meg format 999999999
column tablespace_name format a20
set wrap off
set lines 120
set heading on
set pages 50
select round(sum(a.bytes)/1024/1024) meg,
count(*) extents,a.tablespace_name,a.segment_type,a.owner||'.'||a.segment_name
from dba_extents a
where a.tablespace_name=upper('&1')
group by a.tablespace_name,a.segment_type,a.owner||'.'||a.segment_name
--having round(sum(a.bytes)/1024/1024)>0
order by round(sum(a.bytes)/1024/1024)
-- second sql:
column owner format a30
column object format a30
set lines 120
set wrap off
set trunc off
set pages 50
set feedback on
column file_id format 999
select     /*+ Rule */     'free space' owner     /*"owner" of free space*/
,          ' ' object          /*blank object name*/
,          file_id                    /*file id for the extent header*/
,          block_id               /*block id for the extent header*/
,          blocks                    /*length of the extent, in blocks*/
from          dba_free_space
where          file_id=&1
union
select     /*+ Rule */ substr(owner,1,20)||' '||substr(segment_type,1,9) /*owner name (first 20 chars)*/
,          substr(segment_name,1,32)||'.'||partition_name     /*segment name*/
,          file_id                    /*file id for the extent header*/
,          block_id               /*block id for the extent header*/
,          blocks                    /*length of the extent, in blocks*/
from           dba_extents
where          file_id=&1
order by     3,4
/