分別對應(yīng)32為，64位的win和Linux平臺(tái)
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安裝步驟
1.需要安裝oracle_client
2.復(fù)制sqluldr2_linux32_10204.bin（64位系統(tǒng)用sqluldr2_linux64_10204.bin）到$ORACLE_HOME的bin目錄，重命名為sqluldr2.bin
3.修改 $HOME目錄下.bash_profile 增加如下環(huán)境變量
-bash-3.2$ sqluldr2.bin
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
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
LINUX下用法：
get_tables.sql為預(yù)定義導(dǎo)出sql
-bash-3.2$ sqluldr2.bin USER=userid/keyword@db_name sql=get_tables.sql head=no FILE=/oracle/oradata/backup/stock.csv
0 rows exported at 2014-05-06 11:49:25, size 0 MB.
1000000 rows exported at 2014-05-06 11:49:28, size 24 MB.
2000000 rows exported at 2014-05-06 11:49:32, size 48 MB.
3000000 rows exported at 2014-05-06 11:49:35, size 76 MB.
4000000 rows exported at 2014-05-06 11:49:38, size 100 MB.
5000000 rows exported at 2014-05-06 11:49:41, size 124 MB.
6000000 rows exported at 2014-05-06 11:49:44, size 152 MB.
7000000 rows exported at 2014-05-06 11:49:47, size 176 MB.
8000000 rows exported at 2014-05-06 11:49:50, size 204 MB.
9000000 rows exported at 2014-05-06 11:49:53, size 228 MB.
10000000 rows exported at 2014-05-06 11:49:56, size 252 MB.
11000000 rows exported at 2014-05-06 11:49:59, size 280 MB.
12000000 rows exported at 2014-05-06 11:50:02, size 304 MB.
13000000 rows exported at 2014-05-06 11:50:05, size 328 MB.
14000000 rows exported at 2014-05-06 11:50:08, size 356 MB.
15000000 rows exported at 2014-05-06 11:50:11, size 380 MB.
16000000 rows exported at 2014-05-06 11:50:14, size 408 MB.
17000000 rows exported at 2014-05-06 11:50:17, size 432 MB.
18000000 rows exported at 2014-05-06 11:50:20, size 456 MB.
19000000 rows exported at 2014-05-06 11:50:23, size 484 MB.
20000000 rows exported at 2014-05-06 11:50:27, size 508 MB.
21000000 rows exported at 2014-05-06 11:50:30, size 531 MB.
21877116 rows exported at 2014-05-06 11:50:33, size 558 MB.
output file /oracle/oradata/backup/f_stock.csv closed at 21877116 rows, size 558 MB.
-bash-3.2$
下為WINDOWS平臺(tái)使用方法：
代碼例子1：
sqluldr2.exe USER=用戶/密碼@tnsQUERY="select /*+ parallel(8) */ *from cs_XXX dt,cfg_XXX devdim105 wheredt.starttime>=to_date('2012-06-27 00:00:00','yyyy-mm-dd hh34:mi:ss') and dt.starttime<=to_date('2012-06-2700:01:59','yyyy-mm-dd hh34:mi:ss') AND dt.msc= devdim105.mapvalue(+) ANDdevdim105.deviceid=15 " head=yes FILE=F:\cs_XXX_test.csv
代碼例子2(這種方式用于導(dǎo)出的查詢sql很長，那么就把sql寫在123.sql文件里 )：
sqluldr2.exe USER=用戶/密碼@tns sql=123.sql head=yes FILE=F:\cs_XXX_test.csv
3.在cmd里，直接把步驟2的代碼例子1 ，貼進(jìn)去執(zhí)行。
注：如果執(zhí)行報(bào)報(bào)錯(cuò)，就有可能是環(huán)境變量path的問題，還有就是plsql需要的oci.dll文件等多個(gè)dll文件，請放在sqluldr2的目錄下。
4.查看結(jié)果F:\cs_XXX_test.csv
5.打開csv里面的內(nèi)容，就可以用sqlldr進(jìn)行 入庫。
字符集的控制：
默認(rèn)情況下, Oracle客戶端程序的字符集都由環(huán)境變量(NLS_LANG)決定, 很多時(shí)侯會(huì)因?yàn)楹雎粤谁h(huán)境變量的檢查, 尤其是在Shell或Perl腳本中調(diào)用時(shí), 導(dǎo)致導(dǎo)出的數(shù)據(jù)變成了亂碼. 在OCI 8的接口中, 可以使用OCIEnvNlsCreate函數(shù)在程序中指定客戶端字符集, 從而跳過環(huán)境變量的影響, 于是就在SQLULDR2工具中新增了兩個(gè)選項(xiàng), 用于指定導(dǎo)出時(shí)了字符集.
新的SQLULDR2工具命令行幫助如下所示:
SQL*UnLoader: Fast Oracle Text Unloader (GZIP, Parallel), Release 4.0.1
(@) Copyright Lou Fangxin (AnySQL.net) 2004 - 2010, all rights reserved.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 filefor field and record, you can use '0x' to specify hex character code,
\r=0x0d \n=0x0a |=0x7c ,=0x2c, \t=0x09, :=0x3a, #=0x23, "=0x22 '=0x27
在一個(gè)GBK的數(shù)據(jù)庫中存入"中國"兩個(gè)字, 然后以GBK和UTF8兩種不同的字符集進(jìn)行導(dǎo)出, 在命令行指定字符集設(shè)置.
C:\>sqluldr2 scott/tiger query=test charset=ZHS16GBK
0 rows exported at 2010-06-24 09:12:27, size 0 MB.
1 rows exported at 2010-06-24 09:12:27, size 0 MB.
output file uldrdata.1.txt closed at 1 rows, size 0 MB.C:\>dir uldrdata.1.txt
2010-06-24 09:12 5 uldrdata.1.txtC:\>sqluldr2 scott/tiger query=test charset=UTF8
0 rows exported at 2010-06-24 09:12:42, size 0 MB.
1 rows exported at 2010-06-24 09:12:42, size 0 MB.
output file uldrdata.1.txt closed at 1 rows, size 0 MB.C:\>dir uldrdata.1.txt
2010-06-24 09:12 7 uldrdata.1.txt
用GBK導(dǎo)出時(shí), 文件大小為5個(gè)字節(jié), 兩個(gè)漢字(一個(gè)漢字占兩個(gè)字節(jié))再加一個(gè)換行符. 而用UTF8導(dǎo)出時(shí), 文件大小為7, 兩個(gè)漢字(一個(gè)漢字占三個(gè)字節(jié))加上一個(gè)換行符. 如果用SQLULDR2為特定的數(shù)據(jù)庫寫腳本程序時(shí), 在命令行指定字符集, 將使腳本更加強(qiáng)壯.
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