roracle簡介:
roracle是r連線訪問oracle資料庫乙個dbi（oracledatabase inte***ce）介面，這是乙個基於oci的乙個dbi相容的oracle驅動程式.
詳細說明見：
在linux下安裝roracle比較簡單，只需要用install.packages("roracle")即可，在windows下要通過原始碼安裝。
win7中r安裝roracle方法：
設定環境變數：
set path=c:\programfiles\r\r-3.1.1\bin\x64
注意：如果安裝的的r 64bit版本，那麼oracle client也要是64位版本
安裝步驟：
開啟rc:\users\licz>r
>install.packages("roracle",type = "source")
trying url''
opened url
downloaded 221 kb
* installing *source* package'roracle' ...
** 成功將'roracle'程式包解包並md5和檢查
cygwin warning:
cygwin environment variable option"nodosfilewarning" turns off this warning.
consult the user's guide for more detailsabout posix paths:
oracle client shared library64-bit - 11.2.0.3.0 operating in oracle_home environment.
** libs
警告: this package has a non-empty 'configure.win' file,
so building only the mainarchitecture
cygwin warning:
ms-dos style path detected:c:/progra~1/r/r-31~1.1/etc/x64/makeconf
preferred posix equivalent is:/cygdrive/c/progra~1/r/r-31~1.1/etc/x64/makeconf
cygwin environment variable option"nodosfilewarning" turns off this warning.
consult the user's guide for more detailsabout posix paths:
gcc -m64-i"c:/progra~1/r/r-31~1.1/include" -dndebug -i./oci -i"d:/rcompile/cranpkg/extralibs64/local/include" -o2 -wall -std=gnu99 -mtune=core2 -c rodbi.c -o rodbi.o
gcc -m64-i"c:/progra~1/r/r-31~1.1/include" -dndebug -i./oci -i"d:/rcompile/cranpkg/extralibs64/local/include" -o2 -wall -std=gnu99 -mtune=core2 -c rooci.c -o rooci.o
in file included fromc:/progra~1/r/r-31~1.1/include/r.h:50:0,
from rodbi.h:38,
from rooci.c:64:
c:/progra~1/r/r-31~1.1/include/r_ext/rs.h:45:0:warning: "error" redefined [enabled by default]
c:\rtools\gcc-4.6.3\bin\../lib/gcc/i686-w64-mingw32/4.6.3/../../../../i686-w64-mingw32/include/wingdi.h:70:0:note: this is the location of the previous definition
installing to c:/programfiles/r/r-3.1.1/library/roracle/libs/x64
** r
** inst
** preparing package for lazyloading
creating a generic function for'summary' from package 'base' in package 'roracle'
** help
*** installing help indices
** building package indices
** testing if installed packagecan be loaded
* done (roracle)
the downloaded source packagesare in
roracle包使用：
>library(roracle)
載入需要的程輯包：dbi
# 連線本地oracle資料庫
> con <- dbconnect(drv,username = "scott", password = "tiger")
> rs <- dbsendquery(con,"select * from emp where deptno = 10")
> data <- fetch(rs)
> data
empno ename job mgr hiredate sal comm deptno
1 7782 clark manager 7839 1981-06-092450 na 10
2 7839 king president na 1981-11-175000 na 10
3 7934 miller clerk 7782 1982-01-23 1300 na 10
> dim(data)
[1] 3 8
# 連線遠端oracle資料庫
> drv <-dbdriver("oracle")
> connect.string <-"(description = (address = (protocol = tcp)(host = 10.1.5.195)(port =1521)) (connect_data = (server = dedicated) (service_name = cwdb)))"
> con <- dbconnect(drv,username = "scott", password = "tiger",
+ dbname = connect.string)
> rs <- dbsendquery(con,"select * from emp where deptno = 10")
> data <- fetch(rs)
> data
empno ename job mgr hiredate sal comm deptno
1 7782 clark manager 7839 1981-06-092450 na 10
2 7839 king president na 1981-11-175000 na 10
3 7934 miller clerk 7782 1982-01-23 1300 na 10
> dim(data)
[1] 3 8
linux下安裝roracle包
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