create table t1 (id number primary key, memo varchar2 (4000));
create sequence seqt1 nocache;

declare
    r t1%rowtype;
begin
    r.id := seqt1.nextval;
    r.memo := 'first row';
    insert into t1 values r;
end;
/

ID MEMO
---------- ----------
         1 first row

drop table t1;
create table t1 (id number generated always as identity primary key, memo varchar2 (4000));

create table t1 (id number generated always as identity primary key, memo varchar2 (4000))
;
create or replace view viewt1 (id invisible, memo) as select * from t1
;
<<my>> declare
    r viewt1%rowtype;
    id number;
begin
    r.memo := 'first row';
    insert into viewt1 values r
    returning id into my.id
    ;
    dbms_output.put_line ('inserted '||sql%rowcount||' row(s) id='||id);
end;
/