Oracle中的快速删除和快速插入：
1.快速插入
SQL> insert /**//*+append*/ into t select * from dba_objects nologging; 9157 rows created. SQL> select a.xidusn,a.xidslot,a.used_ublk,a.used_urec,b.username 2 from v$transaction a,v$session b,v$mystat c 3 where a.addr = b.taddr and c.statistic# = 1 4 / XIDUSN XIDSLOT USED_UBLK USED_UREC USERNAME ---------- ---------- ---------- 2 21 1 1 CUST SQL> commit; Commit complete. SQL> insert into t select * from dba_objects; 9157 rows created. SQL> select a.xidusn,a.xidslot,a.used_ublk,a.used_urec,b.username 2 from v$transaction a,v$session b,v$mystat c 3 where a.addr = b.taddr and c.statistic# = 1 4 / XIDUSN XIDSLOT USED_UBLK USED_UREC USERNAME ---------- ---------- ---------- 1 1 13 423 CUST
2.快速删除
建一个存储过程，达到2000条或者更多条，提交一次。
create or replace procedure p_delete
as
n number(10);
cursor my_cur is select * from t1;
begin
n:=0;
for i in my_cur loop
delete from t1 where <条件>;
n:=n+1;
if (mod(n,2000))=0 then
commit;
end if;
end loop;
end;
/