How to find the new tables and columns in a schema

Question

hi..good morning to all...
I have a schema ABC which owns some objects.
Now some days before I have made another schema XYZ which was a replica of ABC schema.
between these days some new tables, new columns in the existing tables(with or without default value), comments on the columns are being added in the new schema i.e XYZ schema.
Now I have to find the extra things which are present in the new schema. I need to find the new tables, new columns in hte existing tables, their default values and descriptions of those.
Can u plss help me how can I find it?
I am guessing that I have to write a SQL query with a minus clause but I am not able to write it and also dont know where should I execute it.
plss help. thanks in advance.

Answer 1

And moreover, when I am executing the query to get the desired result, then it is throwing "illegal use of long datatype" error and pointing to the b.data_default area of my query..
select a.table_name, a.column_name, b.data_default, a.comments from all_col_comments a, dba_tab_columns b
where a.TABLE_NAME=b.TABLE_NAME
and a.OWNER=b.OWNER
and a.OWNER=XYZ
minus
select c.table_name, c.column_name, d.data_default, c.comments from all_col_comments c, dba_tab_columns d
where c.TABLE_NAME=d.TABLE_NAME
and c.OWNER=d.OWNER
and c.OWNER='ABC'
order by 1, 2;
plss help...