oracle之数据导入

1、inset into select

ALTER TABLE EMP NOLOGGING;--为了使插入时少产生log记录，要修改表，不能直接加nologging

1.1、单线程插入

INSERT /*+ APPEND */ INTO TEST
SELECT * FROM B.TEST;
--加上/*+ APPEND */要比不加这个速度快的多，因为这个直接导入到高水位之后，而且是直接块对块的插入，不用经过复杂的sql转换

1.2、多线程插入

--创建分区表
 create table emp
 (empno number,
 ename varchar2(20))
 partition by hash(empno)
 (partition part1,
 partition part2);
--执行多线程插入
alter session enable parallel dml;
insert /*+ PARALLEL(emp,2) */ into emp
select  OBJECT_ID,TIMESTAMP from all_objects;

2、sql loader
上次服务器被攻击，我导入日志文件使用的是c#程序导入到oracle数据库中
这次使用sql loadr实现
control文件为

load data
infile data.log "str '\n'"
into table gj2
replace
fields terminated by ' '
TRAILING NULLCOLS
(a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14)

创建对应表

create table gj2(a1 varchar(10),a2 varchar2(10),
a3 varchar2(100),a4 varchar2(100),a5 varchar2(100),a6 varchar2(100),
a7 varchar2(200),a8 varchar2(100),a9 varchar2(100),a10 varchar2(100),
a11 varchar2(200),a12 varchar2(100),a13 varchar2(100), a14 varchar2(100));

执行sql loader

sqlldr b/b control=c:\abc.txt log=log.tx

这个非常方便，很快就把几十万条记录导入到数据库中了，而且直接提出a1和a2列进行分析就可以得到上次通过程序导入到数据库，然后再通过orcale的正则表达式功能选择出时间和ip地址，相比之下这个简单多了，很好用。
原始数据：

2010-07-02 10:55:02 W3SVC689347672 192.168.10.222 HEAD /index.shtml - 80 - 221.232.180.193 - 403 1 0
2010-07-02 10:55:04 W3SVC689347672 192.168.10.222 HEAD /index.shtml - 80 - 121.35.96.46 - 403 1 0
2010-07-02 10:55:07 W3SVC689347672 192.168.10.222 HEAD /index.shtml - 80 - 119.178.8.242 - 403 1 0
2010-07-02 10:55:13 W3SVC689347672 192.168.10.222 HEAD /index.shtml - 80 - 124.236.72.63 - 403 1 0
2010-07-02 10:55:13 W3SVC689347672 192.168.10.222 HEAD /index.shtml - 80 - 58.60.253.104 - 403 1 0
2010-07-02 10:55:14 W3SVC689347672 192.168.10.222 HEAD /index.shtml - 80 - 120.10.3.64 - 403 1 0
2010-07-02 10:55:18 W3SVC689347672 192.168.10.222 HEAD /index.shtml - 80 - 221.196.165.225 - 403 1 0
2010-07-02 10:55:21 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 116.16.159.224 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64
2010-07-02 10:55:21 W3SVC689347672 192.168.10.222 GET /anlewwwroot.zip - 80 - 120.84.23.2 Mozilla/4.0 404 0 64
2010-07-02 10:55:22 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 122.226.148.190 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64
2010-07-02 10:55:22 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 122.226.148.190 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64
2010-07-02 10:55:22 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 121.204.33.120 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64
2010-07-02 10:55:22 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 202.30.113.101 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64
2010-07-02 10:55:22 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 58.101.51.214 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64
2010-07-02 10:55:22 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 114.41.216.107 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64
2010-07-02 10:55:22 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 58.101.51.214 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64
2010-07-02 10:55:22 W3SVC689347672 192.168.10.222 GET /index.shtml - 80 - 114.41.216.107 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+SV1) 200 0 64

使用sql loader处理后结果：

以前使用c#导入，oracle正则表达式处理日志为：
服务器遭攻击，oracle分析日志