Top space consuming Tables (which considers LOBs and Partitions )

Question

11.2.0.3/Solaris
When u run a query like below which lists the top space consuming segments , It will only list segments for LOBs and Partitions of a table separately..
select segment_name, bytes/1024/1024/1024 gb, segment_type from dba_segments where owner = 'MCS_WM_USR'  order by gb desc;
SEGMENT_NAME                                                                             GB SEGMENT_TYPE
WMERROR                                                                          14.4287109 TABLE
SYS_LOB0000737548C00014$$                                                        9.93554687 LOBSEGMENT
WMSERVICE                                                                        6.00488281 TABLE
WMSESSION                                                                        5.11621093 TABLE
SYS_LOB0000737571C00017$$                                                        4.61914062 LOBSEGMENT
WMCUSTOMPROCESSDATA                                                               2.8046875 TABLE
SYS_C00511081                                                                    1.25097656 INDEX
IDX_SVC_COM1                                                                     0.95501708 INDEX
IDX_SESS_AUDTM                                                                   0.92291259 INDEX
.Does anyone have a query which will list the actual table sizes which is calculated after summing up all LOBs and Partitions in that table ?
For example;
If table EMP has 3 LOB columns, in user_segments , it will appear something like
SEGMENT_NAME                                                                          GB     SEGMENT_TYPE
EMP                                                                               3           TABLE
SYS_LOB0000737548C00014$$                                                         7           LOBSEGMENT
SYS_LOB0000451978C00014$$                                                         2           LOBSEGMENT
SYS_LOB0000875128C00014$$                                                         5           LOBSEGMENTThe total size of EMP table is 3 + 7 + 2 + 5 = 17 GB
I am looking for query which will do a lookup in DBA_LOBS and DBA_PARTITIONS and add up space for each table.
So, my required output will looks like
TABLE_NAME          Size
EMP               17g
DEPT                1g
WMERRORS          104g
.

Answer 1

Hi Garry,
the segment_name in DBA_SEGMENTS can be used to group all table partitions of a partitioned table. So we only have to join DBA_LOBS to DBA_SEGMENTS and group the result rows:
with
basedata as (
select owner
     , segment_name
     , segment_type
     , round(sum(bytes)/1024/1024/1024) gb
     , sum(bytes) bytes
     , count(*) segment_count
  from dba_segments s
group by owner, segment_name, segment_type
lobs as (
select owner
     , table_name
     , segment_name
  from dba_lobs
all_segs as (
select coalesce(lobs.table_name, basedata.segment_name) table_name
     , basedata.*
  from basedata
  left outer join
       lobs
    on (basedata.segment_name = lobs.segment_name
        and basedata.owner = lobs.owner)
select table_name
     , sum(bytes) bytes
     , sum(gb) gb
  from all_segs 
group by table_name
having sum(gb) > .1;Regards
Martin