COMMIT WRITE WAIT vs NOWAIT, BATCH vs IMMEDIATE
A rudimentary script to measure commit times using commit write options
create table tq84_commit_test (
id number,
txt varchar2(100)
);
declare
t0 timestamp := systimestamp;
t_ interval day to second(1);
st number := 1 * 1000 * 1000;
tx varchar2(100) := lpad('x', 100, 'x');
begin
for i in st .. st + 100 * 1000 loop
insert into tq84_commit_test values (i, tx);
-- commit write nowait batch;
commit write wait immediate;
end loop;
t_ := systimestamp - t0;
dbms_output.put_line(t_);
end;
/
drop table tq84_commit_test;