What is the orders to run script

Question

how can I put them in order to run inside my script file? I am trying to make 2 users database same... and want to run them in order so they dont effects each other. For example if I put drop table top of the list I will probably get some error...
Drop index
alter tables
create tables
create index
create function
drop function
create procedure
drop procedure
create sequence
drop sequence
create trigger
drop trigger
create type
drop type
create synonym
drop synonym
create view
drop view
drop table

Answer 1

Well, it depends,
In general you can drop views, sequences, indexes, procedures etc. in a clear-down script with no ill-effect.
Obviously if you don't drop everything, some things might become invalid. For example, if you
drop procedure B and procedure A relies on it and you don't drop procedure A, procedure A
becomes invalid. However, if you then recreate procedure B, procedure A will be re-validated.
Do you need to drop tables, or will alter tables do? Do you need to keep data?
If you need to drop tables, you will either need to do it
from child to parent table if you have foreign keys, or
you will have to drop the foreign key constraints before dropping.
Don't forget you may need to reissue grants if you're dropping and recreating things.