Question

I am using the Oracle SQL developer to do some work: extract data to CSV files and then analyze the data in R. I want to automate this, using R to do the querys and the analysis.
I have used R to connect to other databases: SQL server, MySQL, Postgres, but I am finding a lot of complexities to connect it to Oracle.

So, I want to connect to an Oracle 11g database from R in windows. I tried RODBC, but first I have to setting the ODBC following this instructions:

How do I connect to an Oracle Database in R?

The DBA give to me the following: UserId, Password, Host, Port and SID

In the “Oracle ODBC Driver Configuration” window I write the following:

Data Source Name: SID
Description: Oracle ODBC
TNS Service Name: host:port/SID
UserID: UserId

But I receive this error:

    Unable to connect
    SQLState = S1000
    [Oracle]{ODBC][Ora]ORA-12514: TSN:listener does not currently know of service   
    requested in connect descriptor

So, my question is: How I can connect to Oracle from R? Is there another way? What I am doing wrong?

Thanks in advance…

Answer 1

I connect to Oracle using RODBC quite often at work. Using Windows, I setup an ODBC connection to the DB prior to connecting from within R. This allows you to check your connection first.

After you are all set, I then connect with a command like this:

ch <- odbcConnect("SAVED_ODBC_NAME_HERE", "USER", "PWD")

This creates a channel to the Oracle Database.

Hope that helps