Hi kavitha,
When u say scott/tiger,u hava already created a database.What i understand from you telling is that now u need to import ur data into this database.
What u need to do is take a complete database export of ur previous database.
then import that into ur new database.This will make ur new database indentical to ur old database.

the command to export is

exp username/password@servicename file= full=yes

to import

imp username/password@servicename file== commit=yes ignore=yes full=yes.

I guess this what u wanted.

regards
anandkl