creating table from data, writing out data from SQLplus

How can I write out a data selection into a file or some SQL which I can import into another database.

Scenario: database A:

create view x as select SACH_NR from IDENT_DATEN where KLASS_ART = 'W' and KLASS_TYP = 'K';

write out this selection in some form to a file or something.

database B:

create table X (SACH_NR VARCHAR(50));

now load the data from above selection/file into this table.

Thanks.

Christoph