I am trying to connect Oracle to RStudio using the "ROracle" package. I've installed the package and loaded it. I also have the "DBI" package installed and loaded.
I am using dbConnect(dbDriver("Oracledrivername"),oracle_schema,oracle_password,dbname="dbname") to connect to my oracle schema but I am getting this error:
Error in h(simpleError(msg,call)):
eror in evaluating the argument 'drv' in selecting a method for function 'dbConnect'
I then tried to narrow it down by testing dbDriver("Oracledrivername") by itself and the Error I get is:
Error: Couldn't find driver Oracledrivername
Things that I have done to attempt to fix this are:
I tested my connection to "Oracledrivername" in the ODBC data source administrator, the connection was ok.
The Rstudio I am using is 64 bit, Oracle client is a v12.1.0 64 bit, and the ODBC driver was set up on 64 bit
I have set the oracle_home location to C:\ORACLE12_64BIT\product\12.1.0\client_1
Related
I am getting the following error when I try to connect to Teradata as source using attunity
"SYS-E-HTTPFAIL, Cannot connect to ODBC provider Fatal error has occurred."
I have restarted Attunity console and server
screenshot of the error
I confirmed that Teradata ODBC is installed and I can connect to Teradata
There are multiple reasons for these errors:
1- In my case I needed to update the environment variable and ensure to enter the correct path to Teradata ODBC driver
2- Other reasons for the error is ensure you are running a 64 bit ODBC driver matching Attunity 64 bit download
For our application we have planned to use the Progress Data Direct ODBC driver for oracle. So i have downloaded the EVAL version and installed it. Our application servers are running in the Linux environment.
After installing the EVAL version i have tested the sample code provided by them. I have configured the ODBC.INI and ODBCINST.INI properly.
Tested the DSN connection successfully with the sample program provided by DataDirect Progress.
Then i started using the same for my application Lib LD path set properly ODBC , ODBCINST variables are properly set.
when i try to bring up my servers i got the below error message
7: [unixODBC][DataDirect][ODBC 20101 driver]6015
In this message i'm not getting the message description , only i got the error code which is 6015
How to get the error message for this code 6015 ?
Any help on this?
Due to the older version of driver got the error , so installed newer version and it got resolved.
I'm having trouble connecting to a database with the ODBC.jl package. I can't tell if the problem is with my setup (more likely) or the package. The problem is that ODBC.jl can't seem to locate the correct ODBC driver.
> using ODBC
> ODBC.listdrivers()
/path/to/generic/odbc/
But I need to use a different driver than the one picked up from above.
I'm trying to use a custom connection string as follows:
>ODBC.DSN("DRIVER=path/to/driver/i/want;SERVER=myserver;USER=myuser;PASSWORD=mypass;DATABASE=somedb;")
which returns this:
[ODBC] IM002: [unixODBC][Driver Manager]Data source name not found, and no default driver specified
ERROR: ODBC.ODBCError("ODBC.API.SQLDriverConnect(dbc,window_handle,conn_string,out_conn.ptr,BUFLEN,out_buff,driver_prompt) failed; return code: -1 => SQL_ERROR ")
My understanding is that I should be able to specify the driver as done above, but this does not give the desired connection.
I have .odbc.ini and .odbcinist.ini files set-up in my home directory, which I believe are working correctly. I'm on a Suse enterprise distro. When connecting via isql i have no problems.
Any help is appreciated.
I have a database and I need to read that in R. I found some packages such as Hmisc and RODBC which have the functions to do that. I am using windows and was not able to use Hmisc because you need to have mdb-tools package and I found no tutorial or way to install mdb-tools on windows.
Now, I was trying to start with RODBC. I found this question "How to connect R with Access database in 64-bit Window?" which shows how to have a connection in windows. I tried to use the command similar to what was accepted answer in that question.
odbcDriverConnect("Driver={Microsoft Access Driver (*.mdb, *.accdb)}; DBQ=E:/Projects\Newdata/2013 Database/Data/pgdabc_SW.mdb")
It gives the following error :
1: In odbcDriverConnect("Driver={Microsoft Access Driver (*.mdb, *.accdb)}, DBQ=E:/Projects\Newdata/2013 Database/Data/pgdabc_SW.mdb") :
[RODBC] ERROR: state 01S00, code 0, message [Microsoft][ODBC Driver Manager] Invalid connection string attribute
2: In odbcDriverConnect("Driver={Microsoft Access Driver (*.mdb, *.accdb)}, DBQ=E:/Projects\Newdata/2013 Database/Data/pgdabc_SW.mdb") :
ODBC connection failed
I am not sure how to check and start diagnosing what's going on here. I went to administrative tools and checked the options on "Data Sources (ODBC)". . I changed the target to sysWOW.
Then I created a new data source as follows:
I am not sure if I need to select database or not. I found Brian Ripley's http://cran.r-project.org/web/packages/RODBC/vignettes/RODBC.pdf RODBC tutorial but still I am not able to make it work.
This works fine for me & might work for you, too:
require(RODBC)
conn <- odbcConnectAccess2007(path.expand("~/Database.accdb"))
subset(sqlTables(conn), TABLE_TYPE == "TABLE")
df <- sqlFetch(conn, "Table1")
close(conn)
My sessionInfo():
# R version 3.1.1 (2014-07-10)
# Platform: x86_64-w64-mingw32/x64 (64-bit)
#
# other attached packages:
# [1] RODBC_1.3-10
#
# loaded via a namespace (and not attached):
# [1] tools_3.1.1
I have had issues with this (trying to query Access 32bit from R 64bit) from a long time. I think it has been fixed in windows 10.
I made a kludge by modifying something I found in this post:
How to connect R with Access database in 64-bit Window?
I made a function that saves a script (which in turn connects to the database and saves the result of the query), run it using R32, and load the data into the R64 work environment.
I prepared it for Access 2007, but something analogue could be done for Access2003 (just using odbcConnectAccess instead of odbcConnectAccess2007) or other 32 bit databases
MysqlQueryAccess2007<-function(filename,query){
tempdir=gsub('\\\\','/',tempdir())
txt<-paste("if (!'RODBC' %in% installed.packages()) install.packages('RODBC')
require(RODBC)
channel<-odbcConnectAccess2007('",filename,"')
data<-sqlQuery(channel,\"",query,"\")
save(data,file=paste('",tempdir,"','tempRODBCquery.Rdata',sep='/'))
close(channel)",sep="")
writeLines(txt,con=paste(tempdir,'RODBCscripttemp.r',sep='/')->tempscript)
system(paste0(Sys.getenv("R_HOME"), "/bin/i386/Rscript.exe ",tempscript))
tt<-get(load(paste(tempdir,'tempRODBCquery.Rdata',sep='/')))
return(tt)
}
Then you only have to do the queries this way:
dat<-MysqlQueryAccess2007("samplefile.accdb","SELECT TOP 5 * FROM TableI")
Have been trying to figure it out for a while myself.
Solution given in the accepted answer here
Reading data from 32-bit Access db using 64-bit R, credits to #erg,
as well as here
How to connect R with Access database in 64-bit Window?, credits to #JATT.
The bottom line:
Install 64-bit Microsoft Access drivers https://www.microsoft.com/en-us/download/details.aspx?id=54920
Setup appropriate System DSN in ODBC Data Sources (64-bit)
In R 64-bit read .mdb file by using odbc package: dbConnect(odbc(), 'your_64bit_dsn').
I'm using the RPostgreSQL 0.4 library (compiled on R 2.15.3) on R 2.15.2 under Windows 7 64-bit to interface to PostgreSQL. This works fine when connecting to my PostgreSQL databases on localhost. I'm trying to get my R code to run with a remote PostgreSQL database on Heroku. I can connect to Heroku's PostgreSQL database from the psql command shell on my machine, and it connects without a problem. I get the message:
psql (9.2.3, server 9.1.9)
WARNING: psql version 9.2, server version 9.1.
Some psql features might not work.
WARNING: Console code page (437) differs from Windows code page (1252)
8-bit characters might not work correctly. See psql reference
page "Notes for Windows users" for details.
SSL connection (cipher: DHE-RSA-AES256-SHA, bits: 256)
Clearly, psql uses SSL to connect. When I try to connect using the RPostgreSQL library routine dbConnect(), however, supplying exactly the same credentials using dname=, host=, port=, user=, password=, the connection fails with the complaint:
Error in postgresqlNewConnection(drv, ...) :
RS-DBI driver: (could not connect <user>#<hostname> on dbname <dbname>)
Calls: source ... .valueClassTest -> is -> is -> postgresqlNewConnection -> .Call
Execution halted
I know that Heroku insists on an SSL connection if you want to access their database remotely, so it seems likely that the R interface routine dbConnect() isn't trying SSL. Is there something else that I can do to get a remote connection from R to PostgreSQL on Heroku to work?
To get the JDBC URL for your heroku instance:
Get your hostname, username and password using [pg:credentials].
Your jdbc URL is going to be:
jdbc:postgresql://[hostname]/[database]?user=[user]&password=[password]&ssl=true&sslfactory=org.postgresql.ssl.NonValidatingFactory
Proceed as you would normally with JDBC.
Apparently there is a way using RJDBC. See:
http://ryepup.unwashedmeme.com/blog/2010/11/17/working-with-r-postgresql-ssl-and-mssql/
Please note that in order to connect to Heroku database with JDBC externally, it is important to set the sslfactory parameter as well. Hope Heroku team goes through it and modifies their documentation.
String dbUri = "jdbc:postgresql://ec2-54-243-202-174.compute-1.amazonaws.com:5432/**xxxxxxx**";
Properties props = new Properties();
props.setProperty("user", "**xxxxx**");
props.setProperty("password", "**xxxxx**");
props.setProperty("ssl", "true");//ssl to be set true
props.setProperty("sslfactory", "org.postgresql.ssl.NonValidatingFactory");// sslfactory to be set as shown above
Connection c=DriverManager.getConnection(dbUri,props);
See answer to related Q at https://stackoverflow.com/a/38942581. The suggestion of using RPostgres (https://github.com/rstats-db/RPostgres) instead of RPostgreSQL resolved this same issue for me.