select
t1.owner
,t1.table_name
,t1.column_id
,t1.column_name
,t1.data_type
,t2.comments
from all_tab_columns t1
join all_col_comments t2
on t1.owner = t2.owner
and t1.table_name = t2.table_name
and t1.column_name = t2.column_name
where t1.owner not like '%SYS%'
;
select
t1.owner
,t1.table_name
,t3.comments as table_comment
,t3.table_type
,t1.column_id
,t1.column_name
,t1.data_type
,t2.comments as column_comment
from all_tab_columns t1
join all_col_comments t2
on t1.owner = t2.owner
and t1.table_name = t2.table_name
and t1.column_name = t2.column_name
join all_tab_comments t3
on t1.owner = t3.owner
and t1.table_name = t3.table_name
where t1.owner not like '%SYS%'
;