what is fastest way to add 4 columns to a 100 million row table

we have a table 110 million rows, with 60 columns all not null. We need to add new 4 columns also not null but no data is avialable for the new columns they will become filled as time goes on.

What is the fastest way to add 4 columns any ideas? With a table that large and our schedule we dont have the time to test out every idea so any suggesions from experience or theoritical basis will be appreciated

some things we are thinking of:

1 export then import?

2. create a table in parallel that is copy of old then create new one with columns and do create as select in parallel

3 export to flat file and then load via sql*loader

4 alter tables add columns

table has indices and forgien key constraints.

hardware is sun 10k with 8 cpus and 8 gig of ram no partioning in oracle. table is 24 gigs plus indexes Received on Sat May 12 2001 - 18:13:02 CDT