oracle數(shù)據(jù)與文本導(dǎo)入導(dǎo)出源碼示例

SQL> desc all_objects;
 Name                   Null?  Type
 ----------------------------------------- -------- ----------------------------
 OWNER                   NOT NULL VARCHAR2(30)
 OBJECT_NAME                NOT NULL VARCHAR2(30)
 SUBOBJECT_NAME                   VARCHAR2(30)
 OBJECT_ID                 NOT NULL NUMBER
 DATA_OBJECT_ID                   NUMBER
 OBJECT_TYPE                    VARCHAR2(19)
 CREATED                  NOT NULL DATE
 LAST_DDL_TIME               NOT NULL DATE
 TIMESTAMP                     VARCHAR2(19)
 STATUS                       VARCHAR2(7)
 TEMPORARY                     VARCHAR2(1)
 GENERATED                     VARCHAR2(1)
 SECONDARY                     VARCHAR2(1)

set line 1000     --設(shè)置行的長(zhǎng)度
set pagesize 0    --輸出不換頁(yè)
set feedback off   --默認(rèn)的當(dāng)一條sql發(fā)出的時(shí)候，oracle會(huì)給一個(gè)反饋，比如說(shuō)創(chuàng)建表的時(shí)候，如果成功命令行會(huì)返回類似：Table created的反饋,off后不顯示反饋
set heading off    --不顯示表頭信息
set trimspool on   --如果trimspool設(shè)置為on，將移除spool文件中的尾部空
set trims on     --去掉空字符
set echo off;　　　　  --顯示start啟動(dòng)的腳本中的每個(gè)sql命令，缺省為on
set colsep '|'     --設(shè)置分隔符
set termout off    --不在屏幕上顯示結(jié)果
spool db1.txt     --記錄數(shù)據(jù)到db1.txt
select object_id,object_name from all_objects; --導(dǎo)出數(shù)據(jù)語(yǔ)句
spool off       --收集完畢
exit

[oracle@centos5 ~]$ sqlplus test/test @exp_table.sql 
SQL*Plus: Release 10.2.0.4.0 - Production on Thu Jun 13 16:35:14 2013
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@centos5 ~]$ sed -i 's/ //g' db1.txt --可選，去除每行開(kāi)頭部分的空格
[oracle@centos5 ~]$ more db1.txt 20|ICOL$
44|I_USER1
28|CON$
15|UNDO$
29|C_COBJ#
3|I_OBJ#
25|PROXY_ROLE_DATA$

[oracle@centos5 ~]$ cat db1.txt |wc -l
49988
[oracle@centos5 ~]$ sqlplus test/test
SQL*Plus: Release 10.2.0.4.0 - Production on Thu Jun 13 16:36:21 2013
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select count(*) from all_objects;
 COUNT(*)
----------
   49988 --數(shù)據(jù)正確

SQL> create table tb_sqlldr (id number,name varchar2(50));
Table created.

load data         
infile 'db1.txt'      --數(shù)據(jù)來(lái)源文本
append into table tb_sqlldr  --數(shù)據(jù)導(dǎo)入到表tb_sqldr中，導(dǎo)入方式為追加，如果想覆蓋
fields terminated by "|"  --4、字段終止于X'09'，是一個(gè)制表符(tab)
(id,name)          --定義對(duì)應(yīng)的字段名稱，注意順序

sqlldr userid=test/test control=tb_sqlldr.ctl

SQL> select count(*) from tb_sqlldr;
 COUNT(*)
----------
   49988

SQL> select count(*) from tb_sqlldr;
 COUNT(*)
----------
   99976

[oracle@centos5 ~]$ sqlldr
SQL*Loader: Release 10.2.0.4.0 - Production on Thu Jun 13 17:07:26 2013
Copyright (c) 1982, 2007, Oracle. All rights reserved.

Usage: SQLLDR keyword=value [,keyword=value,...]
Valid Keywords:
  userid -- ORACLE username/password      
  control -- control file name         
    log -- log file name           
    bad -- bad file name           
   data -- data file name           
  discard -- discard file name         
discardmax -- number of discards to allow     (Default all)
   skip -- number of logical records to skip  (Default 0)
   load -- number of logical records to load  (Default all)
  errors -- number of errors to allow      (Default 50)
   rows -- number of rows in conventional path bind array or between direct path data saves
        (Default: Conventional path 64, Direct path all)
 bindsize -- size of conventional path bind array in bytes (Default 256000)
  silent -- suppress messages during run (header,feedback,errors,discards,partitions)
  direct -- use direct path           (Default FALSE)
  parfile -- parameter file: name of file that contains parameter specifications
 parallel -- do parallel load           (Default FALSE)
   file -- file to allocate extents from   
skip_unusable_indexes -- disallow/allow unusable indexes or index partitions (Default FALSE)
skip_index_maintenance -- do not maintain indexes, mark affected indexes as unusable (Default FALSE)
commit_discontinued -- commit loaded rows when load is discontinued (Default FALSE)
 readsize -- size of read buffer         (Default 1048576)
external_table -- use external table for load; NOT_USED, GENERATE_ONLY, EXECUTE (Default NOT_USED)
columnarrayrows -- number of rows for direct path column array (Default 5000)
streamsize -- size of direct path stream buffer in bytes (Default 256000)
multithreading -- use multithreading in direct path 
 resumable -- enable or disable resumable for current session (Default FALSE)
resumable_name -- text string to help identify resumable statement
resumable_timeout -- wait time (in seconds) for RESUMABLE (Default 7200)
date_cache -- size (in entries) of date conversion cache (Default 1000)
PLEASE NOTE: Command-line parameters may be specified either by
position or by keywords. An example of the former case is 'sqlldr
scott/tiger foo'; an example of the latter is 'sqlldr control=foo
userid=scott/tiger'. One may specify parameters by position before
but not after parameters specified by keywords. For example,
'sqlldr scott/tiger control=foo logfile=log' is allowed, but
'sqlldr scott/tiger control=foo log' is not, even though the
position of the parameter 'log' is correct.