oracel 学习之：sqluldr2使用

                                                                                       sqluldr2

  

简单介绍：

简介：

Sqluldr2：专业用于大数据量导出工具之一，效率比普通导出快70%。 ( Sqlldr：专业用于导入的工具之一，请注意两个工具的区别。),在使用时,最好用磁盘写入速度快，网络好，网速快的做。

 

内部实现：

#include <stdio.h>
#include "sqluldr2.h"

void main()
{
 void *h = NULL;
 SQLULDR2HandleAlloc(&h);
  if(h != NULL)
  {
     SQLULDR2HandleSetAttr(h, "USER=SYS");
     SQLULDR2HandleSetAttr(h, "QUERY=SELECT * FROM TAB");
     SQLULDR2HandleExecute(h);
     SQLULDR2HandleFree(h);
  }
}

#include <stdio.h>
#include "sqluldr2.h"
 
void main()
{
 void *h = NULL;
 SQLULDR2HandleAlloc(&h);
  if(h != NULL)
  {
     SQLULDR2HandleSetAttr(h, "USER=SYS");
     SQLULDR2HandleSetAttr(h, "QUERY=SELECT * FROM TAB");
     SQLULDR2HandleExecute(h);
     SQLULDR2HandleFree(h);
  }
}
 

 

工具列表:

针对不同平台用不同的导出工具：

Windows:     sqluldr2.exe

Linux(32位)： sqluldr2_linux32_10204.bin

Linux(64位):   sqluldr2_linux64_10204.bin

 

使用说明 （Windows平台 ）：

使用sqluldr2的步骤：

1.打开运行àcmd进入到sqluldr2.exe的当前目录

 

2.参数介绍

User=用户/密码@tns

Query=”查询语句”

File= 导出的路径

Head= 输出信息时，yes表示要表头，no表示不要表头

 

注意：想查看更多参数，请输入 sqluldr2 help=yes

 

C:\Users\meng\Desktop\sqluldr2>sqluldr2.exe help=yes


SQL*UnLoader: Fast Oracle Text Unloader (GZIP, Parallel), Release 4.0.1
(@) Copyright Lou Fangxin (AnySQL.net) 2004 - 2010, all rights reserved.


License: Free for non-commercial useage, else 100 USD per server.


Usage: SQLULDR2 keyword=value [,keyword=value,...]


Valid Keywords:
   user    = username/password@tnsname
   sql     = SQL file name
   query   = select statement
   field   = separator string between fields
   record  = separator string between records
   rows    = print progress for every given rows (default, 1000000)
   file    = output file name(default: uldrdata.txt)
   log     = log file name, prefix with + to append mode
   fast    = auto tuning the session level parameters(YES)
   text    = output type (MYSQL, CSV, MYSQLINS, ORACLEINS, FORM, SEARCH).
   charset = character set name of the target database.
   ncharset= national character set name of the target database.
   parfile = read command option from parameter file
   read    = set DB_FILE_MULTIBLOCK_READ_COUNT at session level
   sort    = set SORT_AREA_SIZE at session level (UNIT:MB)
   hash    = set HASH_AREA_SIZE at session level (UNIT:MB)
   array   = array fetch size
   head    = print row header(Yes|No)
   batch   = save to new file for every rows batch (Yes/No)
   size    = maximum output file piece size (UNIB:MB)
   serial  = set _serial_direct_read to TRUE at session level
   trace   = set event 10046 to given level at session level
   table   = table name in the sqlldr control file
   control = sqlldr control file and path.
   mode    = sqlldr option, INSERT or APPEND or REPLACE or TRUNCATE
   buffer  = sqlldr READSIZE and BINDSIZE, default 16 (MB)
   long    = maximum long field size
   width   = customized max column width (w1:w2:...)
   quote   = optional quote string
   data    = disable real data unload (NO, OFF)
   alter   = alter session SQLs to be execute before unload
   safe    = use large buffer to avoid ORA-24345 error (Yes|No)
   crypt   = encrypted user information only (Yes|No)
   sedf/t  = enable character translation function
   null    = replace null with given value
   escape  = escape character for special characters
   escf/t  = escape from/to characters list
   format  = MYSQL: MySQL Insert SQLs, SQL: Insert SQLs.
   exec    = the command to execute the SQLs.
   prehead = column name prefix for head line.
   rowpre  = row prefix string for each line.
   rowsuf  = row sufix string for each line.
   colsep  = separator string between column name and value.
   presql  = SQL or scripts to be executed before data unload.
   postsql = SQL or scripts to be executed after data unload.
   lob     = extract lob values to single file (FILE).
   lobdir  = subdirectory count to store lob files .
   split   = table name for automatically parallelization.
   degree  = parallelize data copy degree (2-128).
   hint    = MySQL SQL hint for the Insert, for example IGNORE.
   unique  = Unique Column List for the MySQL target table.
   update  = Enable MySQL ON DUPLICATE SQL statement(YES/NO).


  for field and record, you can use '0x' to specify hex character code,
  \r=0x0d \n=0x0a |=0x7c ,=0x2c, \t=0x09, :=0x3a, #=0x23, "=0x22 '=0x27

C:\Users\meng\Desktop\sqluldr2>

C:\Users\meng\Desktop\sqluldr2>sqluldr2.exe help=yes
SQL*UnLoader: Fast Oracle Text Unloader (GZIP, Parallel), Release 4.0.1
(@) Copyright Lou Fangxin (AnySQL.net) 2004 - 2010, all rights reserved.
License: Free for non-commercial useage, else 100 USD per server.
Usage: SQLULDR2 keyword=value [,keyword=value,...]
Valid Keywords:
   user    = username/password@tnsname
   sql     = SQL file name
   query   = select statement
   field   = separator string between fields
   record  = separator string between records
   rows    = print progress for every given rows (default, 1000000)
   file    = output file name(default: uldrdata.txt)
   log     = log file name, prefix with + to append mode
   fast    = auto tuning the session level parameters(YES)
   text    = output type (MYSQL, CSV, MYSQLINS, ORACLEINS, FORM, SEARCH).
   charset = character set name of the target database.
   ncharset= national character set name of the target database.
   parfile = read command option from parameter file
   read    = set DB_FILE_MULTIBLOCK_READ_COUNT at session level
   sort    = set SORT_AREA_SIZE at session level (UNIT:MB)
   hash    = set HASH_AREA_SIZE at session level (UNIT:MB)
   array   = array fetch size
   head    = print row header(Yes|No)
   batch   = save to new file for every rows batch (Yes/No)
   size    = maximum output file piece size (UNIB:MB)
   serial  = set _serial_direct_read to TRUE at session level
   trace   = set event 10046 to given level at session level
   table   = table name in the sqlldr control file
   control = sqlldr control file and path.
   mode    = sqlldr option, INSERT or APPEND or REPLACE or TRUNCATE
   buffer  = sqlldr READSIZE and BINDSIZE, default 16 (MB)
   long    = maximum long field size
   width   = customized max column width (w1:w2:...)
   quote   = optional quote string
   data    = disable real data unload (NO, OFF)
   alter   = alter session SQLs to be execute before unload
   safe    = use large buffer to avoid ORA-24345 error (Yes|No)
   crypt   = encrypted user information only (Yes|No)
   sedf/t  = enable character translation function
   null    = replace null with given value
   escape  = escape character for special characters
   escf/t  = escape from/to characters list
   format  = MYSQL: MySQL Insert SQLs, SQL: Insert SQLs.
   exec    = the command to execute the SQLs.
   prehead = column name prefix for head line.
   rowpre  = row prefix string for each line.
   rowsuf  = row sufix string for each line.
   colsep  = separator string between column name and value.
   presql  = SQL or scripts to be executed before data unload.
   postsql = SQL or scripts to be executed after data unload.
   lob     = extract lob values to single file (FILE).
   lobdir  = subdirectory count to store lob files .
   split   = table name for automatically parallelization.
   degree  = parallelize data copy degree (2-128).
   hint    = MySQL SQL hint for the Insert, for example IGNORE.
   unique  = Unique Column List for the MySQL target table.
   update  = Enable MySQL ON DUPLICATE SQL statement(YES/NO).
  for field and record, you can use '0x' to specify hex character code,
  \r=0x0d \n=0x0a |=0x7c ,=0x2c, \t=0x09, :=0x3a, #=0x23, "=0x22 '=0x27
C:\Users\meng\Desktop\sqluldr2>
 

 

代码例子1：

sqluldr2.exe USER=用户/ 密码@ tnsQUERY="select   /*+ parallel(8)  */  *from cs_XXX dt,cfg_XXX devdim105 wheredt.starttime>=to_date('2012-06-27 00:00:00','yyyy-mm-dd hh24:mi:ss') and dt.starttime<=to_date('2012-06-2700:01:59','yyyy-mm-dd hh24:mi:ss') AND dt.msc= devdim105.mapvalue(+) ANDdevdim105.deviceid=15 " head=yes FILE=F:\cs_XXX_test.csv

 

代码例子2(这种方式用于导出的查询sql很长，那么就把sql写在123.sql文件里 )：

sqluldr2.exe USER=用户/ 密码@ tns  sql=123.sqlhead=yes FILE=F:\cs_XXX_test.csv

 

 

3.在cmd里，直接把步骤2的 代码例子1 ，贴进去执行。

 

注：如果执行报报错，就有可能是环境变量path的问题，还有就是plsql需要的oci.dll文件等多个dll文件，请放在sqluldr2的目录下。

 

4.查看结果F:\cs_XXX_test.csv

 

5.打开csv里面的内容，就可以用sqlldr进行 入库。

 

转自： http://blog.csdn.net/shushugood/article/details/7725984