R语言连接Oracle

时间:2021-09-18 01:39:00

考虑到使用R直接连接oracle对与读取数据具有较高的便利性,对此进行尝试使用ROracle进行连接。

1.下载Rtool

2.设置环境变量(注意不要覆盖)

Set  OCI_LIB32 = C:\instantclient_11_2
Set path = C:\instantclient_11_2\sdk;D:\R-3.3.2\R\bin; C:\Rtools\gcc-4.6.3\bin; C:\Rtools\bin;

3.安装R_package

install.packages("DBI")
install.packages("ROracle")

4.加载包-连接数据库

library(DBI)
library(ROracle)
drv <-dbDriver("Oracle")
connect.tns <-"(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = ****)(PORT =****)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = *****)(INSTANCE_NAME = **)))"
conn <-dbConnect(drv,username="***",password="***",dbname = connect.tns)

5.测试

test <-dbSendQuery(conn,"select  1,2,3  from dual")
data
<-fetch(test)
data

得到以下结果,目前看来oracle是连接成功了

R语言连接Oracle