Bulk insert

hi friends... need help...

i am want to insert 500 million data from sTable to dTable such as

insert into dTable
select * from sTable

time taken : 20 mins
Note : there are no index or any constraint on both the tables.
database : oracle 10g

is there any fast way to insert bulk data ?

Twenty minutes for half a billion rows doesn't look that bad.

You may want to try append hint.

Also, if tables are partitioned you may want to use parallel processing; for a few partitions you may want to set degree of parallelism to the number of partitions.