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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
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