Home Database Mysql Tutorial 演示一个带有全文索引表的分区交换例子

演示一个带有全文索引表的分区交换例子

Jun 07, 2016 pm 04:44 PM

一、实验说明: 操作系统:rhel 5.4 x86 数据库:Oracle 11g R2 实验说明:该实验参照了谭老师的《让Oracle跑的

一、实验说明:

      操作系统:rhel 5.4 x86

      数据库:Oracle 11g R2

      实验说明:该实验参照了谭老师的《让Oracle跑的更快2》中的一个案例。

二、在数据库中创建带加载数据的分区表及索引

----------创建一个包含3个分区的分区表,分区的字段是一个时间字段,分别存放2011年、2012年和之后的数据。-----
SQL> create table jack_test(id int,name varchar2(60),created date)
  2  partition by range(created)
  3  (
  4  partition p2011 values less than(to_date('2012-01-01','yyyy-mm-dd')),
  5  partition p2012 values less than(to_date('2013-01-01','yyyy-mm-dd')),
  6  partition pmax values less than (maxvalue)
  7  );

Table created.
 ----------创建全文索引----------------------------------------------------------------------

SQL> create index jack_test_ind on jack_test(name) indextype is ctxsys.context local;

Index created.

三、在数据库中创建临时表

----------创建一个和jack_test表结构完全相同的临时表jack_test,只是它不是分区表,临时表上暂时不需要创建索引-------jack_temp
3 Table created.

四、由程序将待加载的数据写成固定格式的文件

---------下面是sqlldr的一个控制文件-------------------------
[oracle@node2 jack]$ vi jack_test_2011.ctl

OPTIONS (DIRECT=TRUE)
LOAD DATA
INFILE '/home/oracle/jack/jack_test_2011.dat'
BADFILE '/home/oracle/jack/jack_test_2011.bad'
DISCARDFILE '/home/oracle/jack/jack_test_2011.dsc'
APPEND INTO TABLE jack_temp
(id TERMINATED BY WHITESPACE,
 name TERMINATED BY WHITESPACE,
 created DATE "YYYY-MM-DD HH24:MI:SS" TERMINATED BY WHITESPACE)

 ----------下面是需要加载的格式文件中的部分数据--------------------------
[oracle@node2 jack]$ more jack_test_2011.dat
13628    index    2011-6-8
13629    index    2011-6-8
13630    index    2011-6-8
13631    index    2011-6-8
13632    index    2011-6-8
13633    index    2011-6-8
13634    index    2011-6-8
13635    index    2011-6-8
13636    index    2011-6-8
13637    index    2011-6-8
13638    index    2011-6-8
13639    index    2011-6-8
13640    index    2011-6-8
13641    index    2011-6-8
13642    index    2011-6-8
13643    index    2011-6-8

五、使用SQL*Loader将文件装载入临时文件中

-------------开始加载数据---------------------------------------------------
[oracle@node2 jack]$ sqlldr jack/jack control=jack_test_2011.ctl

SQL*Loader: Release 11.2.0.1.0 - Production on Tue Dec 25 14:59:25 2012

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.


Load completed - logical record count 27381.

 ---------------验证是否加载成功-----------------------------
SQL> set linesize 150;
SQL> set pagesize 100;
SQL> select * from jack_test where rownum

no rows selected

SQL> select * from jack_temp where rownum

    ID NAME                            CREATED
---------- ------------------------------------------------------------ ---------
    13628 index                            08-JUN-11
    13629 index                            08-JUN-11
    13630 index                            08-JUN-11
    13631 index                            08-JUN-11
    13632 index                            08-JUN-11
    13633 index                            08-JUN-11
    13634 index                            08-JUN-11
    13635 index                            08-JUN-11
    13636 index                            08-JUN-11

9 rows selected.

SQL> select count(*) from jack_temp;

  COUNT(*)
----------
    27378

SQL> select count(*) from jack_test partition (p2011);

  COUNT(*)
----------
    0

SQL> select count(*) from jack_test;

  COUNT(*)
----------
    0

六、在临时表中创建全文索引和其他需要的索引

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