Quey is running very slow on system table in one of the database

Question

oracle database 11.2.0.2
select owner||'.'||segment_name Segment_name,
      bytes/(1024*1024) Size_MB,
      extents,
      round(initial_extent/(1024*1024),2) initial_MB,
      round(next_extent/(1024*1024),2) next_MB,
      PCT_INCREASE pct,
      min_extents||' - '||decode(max_extents,2147483645,'UNLIM',max_extents) min_max,
      segment_type type,
      tablespace_name
from dba_segments S
WHERE  SEGMENT_NAME IN ( SELECT SEGMENT_NAME FROM DBA_LOBS L
                        WHERE TABLE_NAME = 'PS_PV_ATT_DB_SRV'
                      UNION ALL
                       SELECT INDEX_NAME FROM DBA_LOBS
                        WHERE TABLE_NAME = 'PS_PV_ATT_DB_SRV'
                      UNION ALL
                      SELECT TABLE_NAME FROM DBA_LOBS
                       WHERE TABLE_NAME ='PS_PV_ATT_DB_SRV'
                       );

Answer 1

Yup! Looks like a bug. Search MOS to see if it has been filed before and, if not, file an SR with Oracle.
If you really need the data (as opposed to just demonstrating a problem) then use a table expression like this
WITH q as (SELECT SEGMENT_NAME FROM DBA_LOBS L
                        WHERE TABLE_NAME = 'PS_PV_ATT_DB_SRV'
                      UNION ALL
                       SELECT INDEX_NAME FROM DBA_LOBS
                        WHERE TABLE_NAME = 'PS_PV_ATT_DB_SRV'
                      UNION ALL
                      SELECT TABLE_NAME FROM DBA_LOBS
                       WHERE TABLE_NAME ='PS_PV_ATT_DB_SRV'
select owner||'.'||segment_name Segment_name,
      bytes/(1024*1024) Size_MB,
      extents,
      round(initial_extent/(1024*1024),2) initial_MB,
      round(next_extent/(1024*1024),2) next_MB,
      PCT_INCREASE pct,
      min_extents||' - '||decode(max_extents,2147483645,'UNLIM',max_extents) min_max,
      segment_type type,
      tablespace_name
from dba_segments S where segment_name in (select segment_name from q)