Silver , otimize para sua necessidade :
set linesize 200
set pages 200
col usuario for a10
col tablespace for a14
col coluna for a20
col tabela for a32
col indice for a30
select a.owner usuario, b.table_name tabela, b.index_name indice, b.column_name coluna,
c.extents, c.tablespace_name tablespace, c.bytes/1024/1024 tamanho_mb,
c.initial_extent/1024/1024 initial_mb, c.next_extent/1024/1024 extent_mb
from dba_indexes a, all_ind_columns b, dba_segments c
where
a.owner = c.owner and
a.index_name = b.index_name and
a.index_name = c.segment_name and
a.table_name = b.table_name and
c.tablespace_name 'SYSTEM' and
c.extents > 2;
spool off
Abraço[/code]