Table Load Sequence - Referential Key Hierarchy

Question

I have a schema with around 100 tables. I need to load data in those table in such an order so that none of the referential integrity constraints fail while loading the data. Is there a way I can build a load sequence using some referential key hierarchy?
I don't have an option to disable all constraints and enable them post load.
Using Oracle 11gR1.
Edited by: roboracle on Mar 11, 2011 11:43 AM

Answer 1

Sorry, my mistake, this forum doesn't allow the < > operator...( @#$%&@#%&@$*@#$!! )
It should be:
with temp_constraints as (
select table_name
,      constraint_name pkey_constraint
,      null fkey_constraint
,      null r_constraint_name
from   user_constraints
where  constraint_type = 'P'
--and    table_name = SOME_TABLE  -- for depencencies of one table
union all
select a.table_name
,      a.constraint_name pkey_constraint
,      b.constraint_name fkey_constraint
,      b.r_constraint_name
from   user_constraints a
,      user_constraints b
where  a.table_name = b.table_name
and    a.constraint_type = 'P'
and    b.constraint_type = 'R'
select rpad( '*', (level-1)*2, '*' ) || table_name relation
from   temp_constraints
start with fkey_constraint is null
connect by pkey_constraint != r_constraint_name
       and prior pkey_constraint = r_constraint_name;