我正在尝试将R连接到我的Oracle数据库,但是每当我调用以下函数时,都会出现以下错误:
Error in .jcall(drv@jdrv, "Ljava/sql/Connection;", "connect", as.character(url)[1], :
java.sql.SQLException: NL Exception was generated
我有2个文件,一个functions.r文件和我的working.r文件。以下是每个文件中的内容。
functions.r
caesi <- function(DB){
## Create an Oracle connection to a
## remote database using the SID in the connect string.
drv <- JDBC(driverClass="oracle.jdbc.OracleDriver", classPath="E:/filelocation/ojdbc6.jar")
## user details
username = "USERNAME" ## Your user name
password = "PASSWORD" ## Your password
## Refer to Oracle Database Net Services Administator's Guide for
## details on connect string specification.
## Current connection string this will change when we replatform
host <- "LOCALHOST"
port <- 1521
svc <- "rtreports"
connect.string <- paste("(DESCRIPTION=", " (ADDRESS= (PROTOCOL=TCP)(HOST= ",host,")(PORT=",port,"))","(CONNECT_DATA= (SERVICE_NAME=",svc,")))",sep = "")
## Use username/password authentication.
ErrReturn <- 0
return({
con <-dbConnect(drv,paste0("jdbc:oracle:thin:@localhost:1521:orcll",connect.string),username, password)
})
}
Get_Data = function(){
ch_or <- caesi("DB")
data <- dbGetQuery(ch_or, paste0(("SELECT * FROM MYTABLE")))
dbDisconnect(ch_or)
outcoords <- data
return(outcoords)
}
和我的working.r文件
#
library(tidyverse)
library(RJDBC)
library(rJava)
library(ggplot2)
library(dplyr)
source("functions.R")
df <- Get_Data()
每当我运行Get_Data时,我都会收到错误消息。我不确定我要去哪里错了,如果有人可以提出建议(如果我是R的新手)会非常感激,如果有人可以提供帮助,我真的会喜欢它。
Nirmala,在进行了请求的更改后,我在代码中注释了以下部分:
## Current connection string this will change when we replatform
##host <- "LOCALHOST"
##port <- 1521
##svc <- "rtreports"
##connect.string <- paste("(DESCRIPTION=", " (ADDRESS= (PROTOCOL=TCP)(HOST= ",host,")(PORT=",port,"))","(CONNECT_DATA= (SERVICE_NAME=",svc,")))",sep = "")
,然后将连接线更改为:
con <-dbConnect(drv,paste0("jdbc:oracle:thin:@localhost:1521:orcll"),username, password)
但这现在给我以下错误:
Error in .jcall(drv@jdrv, "Ljava/sql/Connection;", "connect", as.character(url)[1], :
java.sql.SQLException: ORA-01017: invalid username/password; logon denied
即使用户名/密码正确并且可以在sql developer中连接到数据库也可以正常工作。
答案 0 :(得分:1)
您传递连接URL的方式可能有问题。您正在混合使用长格式和易于连接的URL。您能使用这里显示的URL并尝试一下吗?
jdbc:oracle:thin:@myhost:1521 / myorcldb服务名