insert into table_a a
select * from table_b
where not exists (select 'x' from table_b c
where c.column_1 = a.column_1
and c.column_2 = a.column_2
....
and c.column_n = a.column_n)
ACCOUNT_ID SERVICE_ID
---------- -----------
134
131 aaa
135 ddd
///////
SQL> insert into test
2 select * from testa a
3 where not exists(select 'aaa'
4 from test b
5 where b.account_id=a.account_id
6 and b.service_id=a.service_id);