New columns added in a table

Question

Hi,
A table is altered to add some new information (columns, or constraints etc).
Is there a way to check what all new columns are added to the table and at what date?
Does Oracle Keep track of this activity some where in its Data Dictionary?
Version od the Oracle is - 9.2.0.6.0
Thanks,
Vineet

Answer 1

LAST_DDL date will also be updated if i do the analyze on the table.No it won't.
SQL> create table t (n number);
Table created.
SQL> alter session set nls_date_format = 'yyyy-mm-dd hh24:mi:ss';
Session altered.
SQL> exec dbms_stats.gather_table_stats(user, 't');
PL/SQL procedure successfully completed.
SQL> select o.last_ddl_time, t.last_analyzed
  2  from user_objects o, user_tables t
  3  where t.table_name = 'T'
  4  and t.table_name = o.object_name
  5  and o.object_type = 'TABLE';
LAST_DDL_TIME       LAST_ANALYZED
2007-02-25 16:21:41 2007-02-25 16:22:25
SQL>I once had a Re: ddl about whether this implied gathering statistics should not be considered DDL.