Failing fast SQL

create table so_when_someone_else_has_this (im_sooooo_impatient integer, i_just_cant_delay integer);

insert into so_when_someone_else_has_this values (1, 1);

commit;

delete so_when_someone_else_has_this;

-- Run in a second session
-- and you'll receive ORA-00054, so you probably need some error handling for this
select im_sooooo_impatient, 
       i_just_cant_delay
from   so_when_someone_else_has_this
for update nowait;

drop table so_when_someone_else_has_this purge;