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sqluldr2的介绍
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Sqluldr2
簡單介紹：
簡介：
Sqluldr2：專業用于大數據量導出工具之一，效率比普通導出快70%。 (?Sqlldr：專業用于導入的工具之一，請注意兩個工具的區別。),在使用時,最好用磁盤寫入速度快，網絡好，網速快的做。
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內部實現：
[sql]?view plaincopy
#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:
針對不同平臺用不同的導出工具：
Windows: ????sqluldr2.exe
Linux(32位)： sqluldr2_linux32_10204.bin
Linux(64位): ??sqluldr2_linux64_10204.bin
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使用說明 （Windows平臺）：
使用sqluldr2的步驟：
1.打開運行àcmd進入到sqluldr2.exe的當前目錄
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2.參數介紹
User=用戶/密碼@tns
Query=”查詢語句”
File= 導出的路徑
Head= 輸出信息時，yes表示要表頭，no表示不要表頭
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注意：想查看更多參數，請輸入 sqluldr2 help=yes
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[sql]?view plaincopy
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 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
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代碼例子2(這種方式用于導出的查詢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.sqlhead=yes FILE=F:\cs_XXX_test.csv
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3.在cmd里，直接把步驟2的代碼例子1?，貼進去執行。
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注：如果執行報報錯，就有可能是環境變量path的問題，還有就是plsql需要的oci.dll文件等多個dll文件，請放在sqluldr2的目錄下。
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4.查看結果F:\cs_XXX_test.csv
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5.打開csv里面的內容，就可以用sqlldr進行 入庫。
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