[R] How to connect Microsoft Sql server from R studio using freeTDS instead of RODBC package

Manohar Reddy
Tue, 30 Aug 2016 12:05:54 -0000

Hi Mark,



  Thanks,as per your suggestion and based on below link, I?m trying to
connect my remote server but while connecting I have encountered attached
error, can you please look in that and help out me.



  Link : https://groups.google.com/forum/#!topic/shinyapps-users/hs4bQHsk9JU



 Note :



1.       I tired without freeTDS versions also though nolock

2.       We have set it my remote sql server like by default it will allow
all the connections.



Thnaks,Manu.

On Tue, Aug 30, 2016 at 12:53 AM, Mark Sharp <msharp at txbiomed.org>
wrote:

> Manu,
>
> I believe you are mistaken regarding using freeTDS instead of RODBC.
> shinyapps.io apparently has freeTDS drivers already installed. I am
> guessing that either you have not configured your connections string
> (odbcDriverConnect("driver = FreeTDS; ...")) correctly or your
database
> server has a firewall rule that is not allowing a connection from
> shinyapps.io.
>
> However, please note, I have not used shinyapps.io and am making these
> guesses based on my experience with RODBC and the documentation I have
> read. You will want to find someone with shinyapps.io experience.
>
> Mark
>
> R. Mark Sharp, Ph.D.
> Director of Primate Records Database
> Southwest National Primate Research Center
> Texas Biomedical Research Institute
> P.O. Box 760549
> San Antonio, TX 78245-0549
> Telephone: (210)258-9476
> e-mail: msharp at TxBiomed.org
>
> On Aug 29, 2016, at 12:26 PM, Manohar Reddy <manu.reddy52 at
gmail.com>
> wrote:
> >
> > Hi Mark,
> >
> >
> >   Thank you so much for reply, using exiting ODBC drivers I will make
a
> connection  to sql server and it?s working fine in my local, but as per
> shinyapps.io I need to use freeTDS drivers instead RODBC ,so that I may
> not encounter the any issue .For me here challenging work is how to install
> freeTDS on my machine and how to configure it?
> >
> >
> >      Is there any drivers/way that can i  make a connection to sql
> server and I shouldn?t encounter the issue after deploying application on
> shinyapps.io.
> >
> >
> > Thanks,Manu.
> >
> >
> > On Mon, Aug 29, 2016 at 9:35 PM, Mark Sharp <msharp at
txbiomed.org> wrote:
> > Manu,
> >
> > Read the first paragraph under section "1 ODBC Concepts" of
> https://cran.r-project.org/web/packages/RODBC/vignettes/RODBC.pdf. This
> describes the relationship among the various parts of the technical stack
> that allows connectivity to the database system via ODBC. One of the points
> made is that RODBC uses an ODBC driver (e.g., Actual Technologies, Easysoft
> and OpenLink).
> >
> > I use the driver from Actual Technologies on Mac OS, but many others
> have used freeTDS. I had trouble with freeTDS years ago and decided my time
> was worth the minor cost of using the commercial product from Actual
> Technologies.
> >
> > The driver you use is computer OS specific while RODBC is not.
> >
> > It is also convenient to use an ODBC manager, which is typically a
> graphical application used to create and manage the configuration files
> used by the ODBC driver.
> >
> > Mark
> >
> > R. Mark Sharp, Ph.D.
> > Director of Primate Records Database
> > Southwest National Primate Research Center
> > Texas Biomedical Research Institute
> > P.O. Box 760549
> > San Antonio, TX 78245-0549
> > Telephone: (210)258-9476
> > e-mail: msharp at TxBiomed.org
> >
> > > On Aug 28, 2016, at 11:53 PM, Manohar Reddy <manu.reddy52 at
gmail.com>
> wrote:
> > >
> > > Hi,
> > >
> > >
> > >
> > >   Can anyone guide me how to connect the Microsoft Sql server
2012/14
> from
> > > R studio using freeTDS package instead of RODBC ,I can able to
connect
> the
> > > MS Sql server from R studio using RODBC.
> > >
> > >  Actually my requirement is I have developed webpage/report using
Shiny
> > > package then I was deployed it on Shinyapps.io ,but after
deploying I?m
> > > encountering error like ??ERROR: *first argument is not an open
RODBC
> > > channel*? ,based on this error message I did searched in google
and
> found
> > > that we need to use freeTDS drivers instead of RODBC but I found
some
> > > articles regarding freeTDS but it?s not useful for me.
> > >
> > >
> > >
> > > I was eagerly waiting for solution from someone since last month,
but
> not
> > > yet and this issue is not allowing me to further .Can anyone
please
> help me
> > > out me(how to install freeTDS and how to configure it) on same.
> > >
> > >
> > >
> > > My environment details :
> > >
> > >
> > >
> > >    Os : windows 8
> > >
> > >    R version 3.3.1 (2016-06-21)
> > >
> > >
> > >
> > > Thanks in Advance .
> > >
> > > Manu.
> > >
> > > [[alternative HTML version deleted]]
> > >
> > > ______________________________________________
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> >
> >
> >
> >
> >
> >
> >
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> >
> >
> > --
> >
> >
> > Thanks,
> > Manohar Reddy P
> > +91-9705302062.
>
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--


Thanks,
Manohar Reddy P
+91-9705302062.
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