Oracle join nextval from sequence - oracle

Question

Let's assume
Table TARGET {
ID IDENTITY ...,
...
JOB_NO NUMBER
}
My question is, how can I generate the JOB_NO (by means of a sequence) so that all inserts that have been committed in a statement have the same job_no.
The output should be something like for the n-th execution of that insert stmt.
ID ... JOB_NO
1 ... 123
2 ... 123
3 ... 123
The following is obviously not working. But what is the correct Oracle syntax?
INSERT INTO TARGET SELECT A.*, B.* FROM my_source_table A, (SELECT x.nextval from dual) B
Thanks a lot
Juergen

Answer 1

You could once select the NEXTVAL for every such insert, which increments the sequence and then use CURRVAL within the INSERT.
Let's say this is your sequence
create sequence seq START WITH 123 ;
Always specify the column names in the INSERT to avoid confusion, don't use select * from
select seq.NEXTVAL FROM DUAL;
INSERT INTO TARGET(JOB_NO,col1,col2,..)
SELECT seq.CURRVAL, a.col1,a.col2 FROM my_source_table A, ..

Answer 2

You should be able to do something like:
insert into target select my_seq.nextval, a.* from source a;
Update based on comment below:
SQL*Plus: Release 12.1.0.2.0 Production on Wed Apr 11 12:48:21 2018
Copyright (c) 1982, 2014, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Standard Edition Release 12.1.0.2.0 - 64bit Production
With the Automatic Storage Management option
SQL> create table a(id number, name varchar2(10));
Table created.
SQL> insert into a values(1,'Larry');
1 row created.
SQL> c/1/2
1* insert into a values(2,'Larry')
SQL> c/Larry/Moe
1* insert into a values(2,'Moe')
SQL> /
1 row created.
SQL> c/2/3
1* insert into a values(3,'Moe')
SQL> c/Moe/Curly
1* insert into a values(3,'Curly')
SQL> /
1 row created.
SQL> commit;
Commit complete.
SQL> select * from a;
ID NAME
---------- ----------
1 Larry
2 Moe
3 Curly
SQL> create table b as select 1 id, a.id id_a, a.name from a where 1=0;
Table created.
SQL> desc b
Name Null? Type
----------------------------------------- -------- ----------------------------
ID NUMBER
ID_A NUMBER
NAME VARCHAR2(10)
SQL> create sequence seq_a;
Sequence created.
SQL> insert into b select seq_a.nextval, a.* from a;
3 rows created.
SQL> select * from b;
ID ID_A NAME
---------- ---------- ----------
1 1 Larry
2 2 Moe
3 3 Curly