create table as select性能测试

转载自：http://blog.csdn.net/yangzhijun_cau/article/details/7396088

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原表270W数据，无照片，字段比较多，有50个左右

测试机是一个虚拟机，4CPU，内存空闲2G，windows2003,

oracle9.2.0.6 sga 1g,pga 1g

先测试非归档模式下

1. 150秒
采用create table as select结构

create table lr_jbxx_test1 as
select * from lr_jbxx

归档模式下，耗时166秒

2.99秒
在测试1基础上增加nologging项
create table lr_jbxx_test2
nologging
as
select * from lr_jbxx

3.61秒
在测试2基础上增加parallel项
create table lr_jbxx_test3
nologging
parallel (degree 4)
as
select * from lr_jbxx

无nologging，增加并行51秒

create table lr_jbxx_test7
parallel (degree 4)
as
select * from lr_jbxx

归档模式下，有nologging和parallel，耗时54秒

4.62秒
在测试3基础上，将旧表插入分区表
性能与测试3相当
create table LR_JBXX_test4
partition by range (PCS_DM_LRDWSZD)
(
partition F1 values less than ('410200000000')
    tablespace LDRK_DATA_TS1
    pctfree 10
    initrans 1
    maxtrans 255
    storage
    (
      initial 64K
      minextents 1
      maxextents unlimited
    ),
partition F2 values less than ('410300000000')
    tablespace LDRK_DATA_TS2
    pctfree 10
    initrans 1
    maxtrans 255
    storage
    (
      initial 64K
      minextents 1
      maxextents unlimited
    ),
partition F3 values less than ('410400000000')
    tablespace LDRK_DATA_TS3
    pctfree 10
    initrans 1
    maxtrans 255
    storage
    (
      initial 64K
      minextents 1
      maxextents unlimited
    ),
partition F4 values less than (MAXVALUE)
    tablespace LDRK_DATA_TS4
    pctfree 10
    initrans 1
    maxtrans 255
    storage
    (
      initial 64K
      minextents 1
      maxextents unlimited
    )
)
nologging
parallel (degree 4)
as
select * from lr_jbxx

5.203秒
create table与insert into 分开做，先测试insert into无索引的情况
第一步：创建表结构
create table LR_JBXX_test5
(
LRRYID         NUMBER(12) not null,
SFZH           VARCHAR2(18),
XM             VARCHAR2(90),
XB             VARCHAR2(8),
CYM            VARCHAR2(90),
CSRQ           DATE,
MZ             VARCHAR2(4),
SG             NUMBER(6,2),
CZHKDZ         VARCHAR2(300),
PCS_DM_HJ      VARCHAR2(12),
HKSZDLX_DM     VARCHAR2(2),
WHCD_DM        VARCHAR2(4),
HYZK_DM        VARCHAR2(4),
ZY_DM          VARCHAR2(30),
CZFWID         NUMBER(10),
FZXM           VARCHAR2(200),
YFZGX          VARCHAR2(300),
LRYY_DM        VARCHAR2(10),
JZDZ           VARCHAR2(300),
PCS_DM_JZD     VARCHAR2(12),
JZRQ           DATE,
JZSY           VARCHAR2(300),
JZCS_DM        VARCHAR2(10),
XCSZY          VARCHAR2(30),
XFWCS          VARCHAR2(300),
JZZQFRQ        DATE,
YXQX           NUMBER(4),
ZRR            VARCHAR2(300),
HKLB_DM        VARCHAR2(2),
JZZBH          VARCHAR2(20),
BZ             VARCHAR2(3000),
TBR            VARCHAR2(30),
TBDW           VARCHAR2(14),
TBRQ           DATE,
SJLY_DM        VARCHAR2(2),
DRBZ           CHAR(1),
BDYJBZ         VARCHAR2(20),
BDYJSJ         DATE,
HJID           NUMBER(12),
XMPY           VARCHAR2(300),
XZQH_HJ        VARCHAR2(60),
XZQH_JZD       VARCHAR2(60),
PCS_MC_HJ      VARCHAR2(600),
PCS_MC_JZD     VARCHAR2(600),
DYCS           NUMBER(4),
DYSJ           DATE,
TBDWMC         VARCHAR2(300),
GAJGXZ         VARCHAR2(10),
PCS_DM_LRDWSZD VARCHAR2(12),
XGDW           VARCHAR2(20),
XGSJ           DATE,
BGDW           VARCHAR2(20),
BGSJ           DATE,
ZZMM           VARCHAR2(200),
XGY            VARCHAR2(200)
)
partition by range (PCS_DM_LRDWSZD)
(
partition F1 values less than ('410200000000')
    tablespace LDRK_DATA_TS1
    pctfree 10
    initrans 1
    maxtrans 255
    storage
    (
      initial 64K
      minextents 1
      maxextents unlimited
    ),
partition F2 values less than ('410300000000')
    tablespace LDRK_DATA_TS2
    pctfree 10
    initrans 1
    maxtrans 255
    storage
    (
      initial 64K
      minextents 1
      maxextents unlimited
    ),
partition F3 values less than ('410400000000')
    tablespace LDRK_DATA_TS3
    pctfree 10
    initrans 1
    maxtrans 255
    storage
    (
      initial 64K
      minextents 1
      maxextents unlimited
    ),
partition F4 values less than (MAXVALUE)
    tablespace LDRK_DATA_TS4
    pctfree 10
    initrans 1
    maxtrans 255
    storage
    (
      initial 64K
      minextents 1
      maxextents unlimited
    )
);
第二步：insert
insert into LR_JBXX_test5
select * from lr_jbxx

6 2103
在测试5的基础上，测试索引对批量插入的影响
是没有索引的10倍
alter table LR_JBXX_test6
add constraint PK_LR_JBXX_FQ1 primary key (LRRYID)
using index
tablespace LDRK_IDX
pctfree 10
initrans 2
maxtrans 255
storage
(
    initial 64K
    minextents 1
    maxextents unlimited
);
alter table LR_JBXX_test6
add constraint YS_JZZBH1 unique (JZZBH)
using index
tablespace LDRK_DATA
pctfree 10
initrans 2
maxtrans 255
storage
(
    initial 64K
    minextents 1
    maxextents unlimited
);
alter table LR_JBXX_test6
add constraint YS_SFZH1 unique (SFZH, XM)
using index
tablespace LDRK_DATA
pctfree 10
initrans 2
maxtrans 255
storage
(
    initial 64K
    minextents 1
    maxextents unlimited
);
-- Create/Recreate indexes
create index IDX_CZFWID1 on LR_JBXX_test6 (CZFWID)
tablespace LDRK_DATA
pctfree 10
initrans 2
maxtrans 255
storage
(
    initial 64K
    minextents 1
    maxextents unlimited
);
create index IDX_LR_JBXX_JZDPCS_FQ1 on LR_JBXX_test6 (PCS_DM_JZD);
create index IDX_LR_JBXX_LRDWSZD_FQ1 on LR_JBXX_test6 (PCS_DM_LRDWSZD);
create index IDX_LR_JBXX_SFZH_FQ1 on LR_JBXX_test6 (SFZH)
tablespace LDRK_IDX
pctfree 10
initrans 2
maxtrans 255
storage
(
    initial 64K
    minextents 1
    maxextents unlimited
);
create index IDX_LR_JBXX_TBDW_FQ1 on LR_JBXX_test6 (TBDW)
tablespace LDRK_IDX
pctfree 10
initrans 2
maxtrans 255
storage
(
    initial 64K
    minextents 1
    maxextents unlimited
);
create index IDX_LR_JBXX_XGDW1 on LR_JBXX_test6 (XGDW)
tablespace LDRK_DATA
pctfree 10
initrans 2
maxtrans 255
storage
(
    initial 64K
    minextents 1
    maxextents unlimited
);
create index IDX_LR_JBXX_ZRR1 on LR_JBXX_test6 (ZRR)
tablespace LDRK_IDX
pctfree 10
initrans 2
maxtrans 255
storage
(
    initial 64K
    minextents 1
    maxextents unlimited
);