Retrive data base details of all tables

Question

how can i retrive the
table name, no of rows in that table, no of indexs in that table, no of not null col's in that table
of in single data base(genuine query).

Answer 1

Here's a starter...
The best way to count the number of rows on a table is not to look in the data dictionaries but to actually count the rows...
Laurent Schneider
http://laurentschneider.com/wordpress/2007/04/how-do-i-store-the-counts-of-all-tables.html
SQL> select
  2    table_name,
  3    to_number(
  4      extractvalue(
  5        xmltype(
  6 dbms_xmlgen.getxml('select count(*) c from '||table_name))
  7        ,'/ROWSET/ROW/C')) count
  8  from user_tables
  9 where iot_type != 'IOT_OVERFLOW';
TABLE_NAME                      COUNT
DEPT                                4
EMP                                14
BONUS                               0
SALGRADE                            5
Index Organized Table - Overflow Table
If such tables exist they cannot have "count(*)" done on them -
ORA-25191: cannot reference overflow table of an index-organized table Other information is in the various database dictionary views.
Edited by: BluShadow on Sep 3, 2008 12:18 PM
For some reason this new Jive forum doesn't allow "not equals" as in "<" and ">" when posted together in the code. Stupid forum.